Adjust analog-sw thresholds, Disable logging (loglevel)

=> tested system with new stripboard and actual hardware: system
works as expected with new all combinations of the 4 switches
connected to 1 adc

- Adjust lookup voltage for switch combinations, after connecting the
stripboard to actualy used pcb (apparently there was a >100
difference using an other adc channel + pcb)

- define loglevel for analogswitches to WARN

components/gpio/CMakeLists.txt

@@ -1,4 +1,6 @@
 idf_component_register(
-    SRCS "gpio_evaluateSwitch.cpp"
+    SRCS 
+        "gpio_evaluateSwitch.cpp"
+        "gpio_adc.cpp"
     INCLUDE_DIRS "."
 )

components/gpio/gpio_adc.cpp

@@ -0,0 +1,21 @@
+#include "gpio_adc.hpp"
+
+
+//=============================
+//========= readAdc ===========
+//=============================
+//function for multisampling an anlog input
+int gpio_readAdc(adc1_channel_t adc_channel, bool inverted) {
+    //make multiple measurements
+    int adc_reading = 0;
+    for (int i = 0; i < 32; i++) {
+        adc_reading += adc1_get_raw(adc_channel);
+    }
+    adc_reading = adc_reading / 32;
+    //return original or inverted result
+    if (inverted) {
+        return 4095 - adc_reading;
+    } else {
+        return adc_reading;
+    }
+}

components/gpio/gpio_adc.hpp

@@ -0,0 +1,9 @@
+#pragma once
+#include <stdio.h>
+#include "driver/adc.h"
+
+//function for multisampling an anlog input
+//measures 30 times and returns average
+//if invertion is used currently 11bit resolution is assumed (subtracts from 4095) 
+//TODO: rework this function to be more universal
+int gpio_readAdc(adc1_channel_t adc_channel, bool inverted = false);

components/gpio/gpio_evaluateSwitch.cpp

@@ -9,12 +9,12 @@ gpio_evaluatedSwitch::gpio_evaluatedSwitch( //minimal (use default values)
     gpio_num = gpio_num_declare;
     pullup = true;
     inverted = false;
+    inputSource = inputSource_t::GPIO;
 
-    init();
+    initGpio();
 };
 
 
-
 gpio_evaluatedSwitch::gpio_evaluatedSwitch( //optional parameters given
         gpio_num_t gpio_num_declare,
         bool pullup_declare,
@@ -23,13 +23,25 @@ gpio_evaluatedSwitch::gpio_evaluatedSwitch( //optional parameters given
     gpio_num = gpio_num_declare;
     pullup = pullup_declare;
     inverted = inverted_declare;
+    inputSource = inputSource_t::GPIO;
 
-    init();
+    initGpio();
+};
+
+
+gpio_evaluatedSwitch::gpio_evaluatedSwitch( //with function as input source
+        bool (*getInputStatePtr_f)(void),
+        bool inverted_f){
+    //gpio_num = NULL;
+    //pullup = NULL;
+    inverted = inverted_f;
+    getInputStatePtr = getInputStatePtr_f;
+    inputSource = inputSource_t::FUNCTION;
 };
 
 
 
-void gpio_evaluatedSwitch::init(){
+void gpio_evaluatedSwitch::initGpio(){
     ESP_LOGI(TAG, "initializing gpio pin %d", (int)gpio_num);
 
     //define gpio pin as input
@@ -48,122 +60,85 @@ void gpio_evaluatedSwitch::init(){
 };
 
 
+
 void gpio_evaluatedSwitch::handle(){  //Statemachine for debouncing and edge detection
+
+    //--- get pin state with required method ---
+    switch (inputSource){
+        case inputSource_t::GPIO: //from gpio pin
+            if (gpio_get_level(gpio_num) == 0){ //pin low
+                inputState = true;
+            } else { //pin high
+                inputState = false;
+            }
+            break;
+        case inputSource_t::FUNCTION: //from funtion
+            inputState = (*getInputStatePtr)();
+            break;
+    }
+
+    //--- invert state ---
+    //not inverted: switch switches to GND when active
+    //inverted: switch switched to VCC when active
     if (inverted == true){
-        //=========================================================
+        inputState = !inputState;
-        //=========== Statemachine for inverted switch ============
+    }
-        //=================== (switch to VCC) =====================
-        //=========================================================
-        switch (p_state){
-            default:
-                p_state = switchState::FALSE;
-                break;
 
-            case switchState::FALSE:  //input confirmed high (released)
-                fallingEdge = false; //reset edge event
-                if (gpio_get_level(gpio_num) == 1){ //pin high (on)
-                    p_state = switchState::HIGH;
-                    timestampHigh = esp_log_timestamp(); //save timestamp switched from low to high
-                } else {
-                    msReleased = esp_log_timestamp() - timestampLow; //update duration released
-                }
-                break;
 
-            case switchState::HIGH: //input recently switched to high (pressed)
+    //=========================================================
-                if (gpio_get_level(gpio_num) == 1){ //pin still high (on)
+    //========= Statemachine for evaluateing switch ===========
-                    if (esp_log_timestamp() - timestampHigh > minOnMs){ //pin in same state long enough
+    //=========================================================
-                        p_state = switchState::TRUE;
+    switch (p_state){
-                        state = true;
+        default:
-                        risingEdge = true;
+            p_state = switchState::FALSE;
-                        msReleased = timestampHigh - timestampLow; //calculate duration the button was released 
+            break;
-                    }
-                }else{
-                    p_state = switchState::FALSE;
-                }
-                break;
 
-            case switchState::TRUE:  //input confirmed high (pressed)
+        case switchState::FALSE:  //input confirmed high (released)
-                risingEdge = false; //reset edge event
+            fallingEdge = false; //reset edge event
-                if (gpio_get_level(gpio_num) == 0){ //pin low (off)
+            if (inputState == true){ //pin high (on)
-                    timestampLow = esp_log_timestamp();
+                p_state = switchState::HIGH;
-                    p_state = switchState::LOW;
+                timestampHigh = esp_log_timestamp(); //save timestamp switched from low to high
-                } else {
+            } else {
-                    msPressed = esp_log_timestamp() - timestampHigh; //update duration pressed
+                msReleased = esp_log_timestamp() - timestampLow; //update duration released
-                }
+            }
+            break;
 
-                break;
+        case switchState::HIGH: //input recently switched to high (pressed)
-
+            if (inputState == true){ //pin still high (on)
-            case switchState::LOW: //input recently switched to low (released)
+                if (esp_log_timestamp() - timestampHigh > minOnMs){ //pin in same state long enough
-                if (gpio_get_level(gpio_num) == 0){ //pin still low (off)
-                    if (esp_log_timestamp() - timestampLow > minOffMs){ //pin in same state long enough
-                        p_state = switchState::FALSE;
-                        msPressed = timestampLow - timestampHigh; //calculate duration the button was pressed
-                        state=false;
-                        fallingEdge=true;
-                    }
-                }else{
                     p_state = switchState::TRUE;
+                    state = true;
+                    risingEdge = true;
+                    msReleased = timestampHigh - timestampLow; //calculate duration the button was released 
                 }
-                break;
+            }else{
-        }
-
-    }else{
-        //=========================================================
-        //========= Statemachine for not inverted switch ==========
-        //=================== (switch to GND) =====================
-        //=========================================================
-        switch (p_state){
-            default:
                 p_state = switchState::FALSE;
-                break;
+            }
+            break;
 
-            case switchState::FALSE:  //input confirmed high (released)
+        case switchState::TRUE:  //input confirmed high (pressed)
-                fallingEdge = false; //reset edge event
+            risingEdge = false; //reset edge event
-                if (gpio_get_level(gpio_num) == 0){ //pin low (on)
+            if (inputState == false){ //pin low (off)
-                    p_state = switchState::LOW;
+                timestampLow = esp_log_timestamp();
-                    timestampLow = esp_log_timestamp(); //save timestamp switched from high to low
+                p_state = switchState::LOW;
-                } else {
+            } else {
-                    msReleased = esp_log_timestamp() - timestampHigh; //update duration released
+                msPressed = esp_log_timestamp() - timestampHigh; //update duration pressed
-                }
+            }
-                break;
 
-            case switchState::LOW: //input recently switched to low (pressed)
+            break;
-                if (gpio_get_level(gpio_num) == 0){ //pin still low (on)
+
-                    if (esp_log_timestamp() - timestampLow > minOnMs){ //pin in same state long enough
+        case switchState::LOW: //input recently switched to low (released)
-                        p_state = switchState::TRUE;
+            if (inputState == false){ //pin still low (off)
-                        state = true;
+                if (esp_log_timestamp() - timestampLow > minOffMs){ //pin in same state long enough
-                        risingEdge = true;
-                        msReleased = timestampLow - timestampHigh; //calculate duration the button was released
-                    }
-                }else{
                     p_state = switchState::FALSE;
+                    msPressed = timestampLow - timestampHigh; //calculate duration the button was pressed
+                    state=false;
+                    fallingEdge=true;
                 }
-                break;
+            }else{
-
+                p_state = switchState::TRUE;
-            case switchState::TRUE:  //input confirmed low (pressed)
+            }
-                risingEdge = false; //reset edge event
+            break;
-                if (gpio_get_level(gpio_num) == 1){ //pin high (off)
-                    timestampHigh = esp_log_timestamp();
-                    p_state = switchState::HIGH;
-                } else {
-                    msPressed = esp_log_timestamp() - timestampLow; //update duration pressed
-                }
-
-                break;
-
-            case switchState::HIGH: //input recently switched to high (released)
-                if (gpio_get_level(gpio_num) == 1){ //pin still high (off)
-                    if (esp_log_timestamp() - timestampHigh > minOffMs){ //pin in same state long enough
-                        p_state = switchState::FALSE;
-                        msPressed = timestampHigh - timestampLow; //calculate duration the button was pressed
-                        state=false;
-                        fallingEdge=true;
-                    }
-                }else{
-                    p_state = switchState::TRUE;
-                }
-                break;
-        }
     }
 
 }

components/gpio/gpio_evaluateSwitch.hpp

@@ -18,21 +18,30 @@ extern "C"
 //switch to VCC (inverted) and dont use internal pullup:
 //gpio_evaluatedSwitch s3(GPIO_NUM_14 false, true);
 
+enum class inputSource_t {GPIO, FUNCTION};
 
 class gpio_evaluatedSwitch {
     public:
         //--- input ---
         uint32_t minOnMs = 30;
         uint32_t minOffMs = 30;
-        gpio_evaluatedSwitch( //constructor minimal (default parameters pullup=true, inverted=false)
+
+        //constructor minimal (default parameters pullup=true, inverted=false)
+        gpio_evaluatedSwitch( 
                 gpio_num_t gpio_num_declare
                 );
-        gpio_evaluatedSwitch( //constructor with optional parameters
+
+        //constructor with optional parameters
+        gpio_evaluatedSwitch(
                 gpio_num_t gpio_num_declare,
                 bool pullup_declare,
                 bool inverted_declare=false
                 );
 
+        //constructor  with a function as source for input state instead of a gpio pin
+        gpio_evaluatedSwitch(bool (*getInputStatePtr_f)(void), bool inverted_f=false); 
+
+
         //--- output ---         TODO make readonly? (e.g. public section: const int& x = m_x;)
         bool state = false;
         bool risingEdge = false;
@@ -47,12 +56,15 @@ class gpio_evaluatedSwitch {
         gpio_num_t gpio_num;
         bool pullup;
         bool inverted;
+        bool (*getInputStatePtr)(void); //pointer to function for getting current input state
+        inputSource_t inputSource = inputSource_t::GPIO;
 
         enum class switchState {TRUE, FALSE, LOW, HIGH};
         switchState p_state = switchState::FALSE;
+        bool inputState = false;
         uint32_t timestampLow = 0;
         uint32_t timestampHigh = 0;
-        void init();
+        void initGpio();
 
 };
 

main/CMakeLists.txt

@@ -6,6 +6,7 @@ idf_component_register(
         "buzzer.cpp"
         "vfd.cpp"
         "display.cpp"
+        "switchesAnalog.cpp"
     INCLUDE_DIRS 
         "."
     )

main/config.cpp

@@ -3,13 +3,19 @@
 
 //--- inputs ---
 //create and configure objects for evaluated switches
-gpio_evaluatedSwitch SW_START(GPIO_SW_START, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
+//gpio_evaluatedSwitch sw_gpio_39(GPIO_NUM_39, false, true); //pullup false, INVERTED (switch to 3V3, pulldown on pcb soldered)
-gpio_evaluatedSwitch SW_RESET(GPIO_SW_RESET, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
+gpio_evaluatedSwitch sw_gpio_34(GPIO_NUM_34, false, true); //pullup false, INVERTED (switch to 3V3, pulldown on pcb soldered)
-gpio_evaluatedSwitch SW_SET(GPIO_SW_SET, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
+gpio_evaluatedSwitch sw_gpio_32(GPIO_NUM_32, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
-gpio_evaluatedSwitch SW_PRESET1(GPIO_SW_PRESET1, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
+gpio_evaluatedSwitch sw_gpio_33(GPIO_NUM_33, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
-gpio_evaluatedSwitch SW_PRESET2(GPIO_SW_PRESET2, false, true); //pullup false, INVERTED (switch to 3V3, pulldown on pcb soldered)
+gpio_evaluatedSwitch sw_gpio_25(GPIO_NUM_25, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
-gpio_evaluatedSwitch SW_PRESET3(GPIO_SW_PRESET3, false, true); //pullup false, INVERTED (switch to 3V3, pulldown on pcb soldered)
+gpio_evaluatedSwitch sw_gpio_26(GPIO_NUM_26, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
 
+//--- switches connected to 4 sw to analog stripboard ---
+//evaluated switches with function to obtain the current input state instead of gpio
+gpio_evaluatedSwitch sw_gpio_analog_0(&switchesAnalog_getState_sw0);
+gpio_evaluatedSwitch sw_gpio_analog_1(&switchesAnalog_getState_sw1);
+gpio_evaluatedSwitch sw_gpio_analog_2(&switchesAnalog_getState_sw2);
+gpio_evaluatedSwitch sw_gpio_analog_3(&switchesAnalog_getState_sw3);
 
 //create buzzer object with no gap between beep events
 buzzer_t buzzer(GPIO_BUZZER, 0);

main/config.hpp

@@ -4,6 +4,7 @@ extern "C" {
 }
 #include "gpio_evaluateSwitch.hpp"
 #include "buzzer.hpp"
+#include "switchesAnalog.hpp"
 
 
 //===================================
@@ -22,17 +23,34 @@ extern "C" {
 
 
 //==================================
-//===== define input gpio pins =====
+//==== define analog input pins ====
 //==================================
-#define GPIO_SW_START GPIO_NUM_26
-#define GPIO_SW_RESET GPIO_NUM_25
-#define GPIO_SW_SET GPIO_NUM_33
-#define GPIO_SW_PRESET1 GPIO_NUM_32
-#define GPIO_SW_PRESET2 GPIO_NUM_34
-#define GPIO_SW_PRESET3 GPIO_NUM_39
-
 #define GPIO_POTI GPIO_NUM_36
 #define ADC_CHANNEL_POTI ADC1_CHANNEL_0
+#define GPIO_4SW_TO_ANALOG GPIO_NUM_39
+#define ADC_CHANNEL_4SW_TO_ANALOG ADC1_CHANNEL_3 //gpio 39
+//ADC1_CHANNEL_0 gpio36
+//ADC1_CHANNEL_6 gpio_34
+//ADC1_CHANNEL_3 gpio_39
+
+
+//=====================================
+//==== assign switches to objects =====
+//=====================================
+//see config.cpp for available evaluated switch objects
+#define SW_START sw_gpio_26
+#define SW_RESET sw_gpio_25
+#define SW_SET     sw_gpio_analog_0
+#define SW_PRESET1 sw_gpio_analog_1
+#define SW_PRESET2 sw_gpio_analog_2
+#define SW_PRESET3 sw_gpio_analog_3
+
+//unused but already available evaluated inputs
+//#define ? sw_gpio_33
+//#define ? sw_gpio_32
+//#define ? sw_gpio_34
+
+
 
 
 //--------------------------
@@ -71,14 +89,21 @@ extern "C" {
 //===== global variables =====
 //============================
 //create global evaluated switch objects
-//--- inputs ---
+//--- switches on digital gpio pins ---
-//create objects for switches at bottom screw temerinals
+//extern gpio_evaluatedSwitch sw_gpio_39;
-extern gpio_evaluatedSwitch SW_START;
+extern gpio_evaluatedSwitch sw_gpio_34;
-extern gpio_evaluatedSwitch SW_RESET;
+extern gpio_evaluatedSwitch sw_gpio_32;
-extern gpio_evaluatedSwitch SW_SET;
+extern gpio_evaluatedSwitch sw_gpio_33;
-extern gpio_evaluatedSwitch SW_PRESET1;
+extern gpio_evaluatedSwitch sw_gpio_25;
-extern gpio_evaluatedSwitch SW_PRESET2;
+extern gpio_evaluatedSwitch sw_gpio_26;
-extern gpio_evaluatedSwitch SW_PRESET3;
+
+//--- switches connected to 4-sw-to-analog stripboard ---
+extern gpio_evaluatedSwitch sw_gpio_analog_0;
+extern gpio_evaluatedSwitch sw_gpio_analog_1;
+extern gpio_evaluatedSwitch sw_gpio_analog_2;
+extern gpio_evaluatedSwitch sw_gpio_analog_3;
+
+
 
 //create global buzzer object
 extern buzzer_t buzzer;

main/control.cpp

@@ -23,27 +23,6 @@ QueueHandle_t init_encoder(rotary_encoder_info_t * info){
 }
 
 
-//=============================
-//========= readAdc ===========
-//=============================
-//function for multisampling an anlog input
-int readAdc(adc1_channel_t adc_channel, bool inverted = false) {
-    //make multiple measurements
-    int adc_reading = 0;
-    for (int i = 0; i < 16; i++) {
-        adc_reading += adc1_get_raw(adc_channel);
-    }
-    adc_reading = adc_reading / 16;
-    //return original or inverted result
-    if (inverted) {
-        return 4095 - adc_reading;
-    } else {
-        return adc_reading;
-    }
-}
-
-
-
 
 
 //====================
@@ -218,7 +197,7 @@ void task_control(void *pvParameter)
         //set target length to poti position when SET switch is pressed
         if (SW_SET.state == true) {
             //read adc
-            potiRead = readAdc(ADC_CHANNEL_POTI); //0-4095
+            potiRead = gpio_readAdc(ADC_CHANNEL_POTI); //0-4095
             //scale to target length range
             int lengthTargetNew = (float)potiRead / 4095 * 30000;
             //apply hysteresis and round to whole meters //TODO optimize this
@@ -326,7 +305,7 @@ void task_control(void *pvParameter)
 
             case MANUAL: //manually control motor via preset buttons + poti
                 //read poti value
-                potiRead = readAdc(ADC_CHANNEL_POTI); //0-4095
+                potiRead = gpio_readAdc(ADC_CHANNEL_POTI); //0-4095
                 //scale poti to speed levels 0-3
                 uint8_t level = round( (float)potiRead / 4095 * 3 );
                 //exit manual mode if preset2 released

main/control.hpp

@@ -18,6 +18,7 @@ extern "C"
 
 #include "config.hpp"
 #include "gpio_evaluateSwitch.hpp"
+#include "gpio_adc.hpp"
 #include "buzzer.hpp"
 #include "vfd.hpp"
 #include "display.hpp"

main/main.cpp

@@ -14,6 +14,8 @@ extern "C"
 #include "control.hpp"
 #include "buzzer.hpp"
 
+#include "switchesAnalog.hpp"
+
 
 //=================================
 //=========== functions ===========
@@ -78,6 +80,7 @@ extern "C" void app_main()
     //define loglevel
     esp_log_level_set("*", ESP_LOG_INFO);
     esp_log_level_set("buzzer", ESP_LOG_ERROR);
+    esp_log_level_set("switches-analog", ESP_LOG_WARN);
     esp_log_level_set("control", ESP_LOG_INFO);
 
     //create task for controlling the machine
@@ -87,4 +90,5 @@ extern "C" void app_main()
 
     //beep at startup
     buzzer.beep(3, 70, 50);
+
 }

main/switchesAnalog.cpp

@@ -0,0 +1,103 @@
+#include "switchesAnalog.hpp"
+
+#define CHECK_BIT(var,pos) (((var)>>(pos)) & 1) //TODO duplicate code: same macro already used in vfd.cpp
+
+
+
+
+//=====================
+//===== Variables =====
+//=====================
+static const char *TAG = "switches-analog"; //tag for logging
+int diffMin = 4095;
+int adcValue;
+int match_index = 0;
+
+//array that describes voltages for all combinations of the 4 inputs
+const int lookup_voltages[] = {
+    //ADC, S3 S2 S1 S0
+    4095, //0000
+    3780, //0001
+    3390, //0010
+    3040, //0011
+    2760, //0100
+    2542, //0101
+    2395, //0110
+    2225, //0111
+    1964, //1000
+    1845, //1001
+    1762, //1010
+    1664, //1011
+    1573, //1100
+    1485, //1101
+    1432, //1110
+    1363  //1111
+};
+
+
+
+
+//===========================
+//===== handle function =====
+//===========================
+//handle demuxing of 4 switches from 1 adc (has to be run repeatedly)
+void handle(){
+    //read current voltage
+    adcValue = gpio_readAdc(ADC_CHANNEL_4SW_TO_ANALOG);
+    ESP_LOGI(TAG, "voltage read: %d", adcValue);
+
+    //find closest match in lookup table
+    diffMin = 4095; //reset diffMin each run
+    for (int i=0; i<16; i++){
+        int diff = fabs(adcValue - lookup_voltages[i]);
+        if (diff < diffMin){
+            diffMin = diff;
+            match_index = i;
+        }
+    }
+
+    //get bool values for each input from matched index
+    bool s0 = CHECK_BIT(match_index, 0);
+    bool s1 = CHECK_BIT(match_index, 1);
+    bool s2 = CHECK_BIT(match_index, 2);
+    bool s3 = CHECK_BIT(match_index, 3);
+    //bool s1 = ((match_index & 0b1000) == 0b1000);
+    //bool s2 = ((match_index & 0b0100) == 0b0100);
+    //bool s3 = ((match_index & 0b0010) == 0b0010);
+    //bool s4 = ((match_index & 0b0001) == 0b0001);
+
+
+    //log results
+    ESP_LOGI(TAG, "adcRead: %d, closest-match: %d, diff: %d, index: %d, switches: %d%d%d%d",
+            adcValue, lookup_voltages[match_index], diffMin, match_index, (int)s3, (int)s2, (int)s1, (int)s0);
+
+
+}
+
+
+
+//====================
+//===== getState =====
+//====================
+//get state of certain switch (0-3)
+bool switchesAnalog_getState(int swNumber){
+    //run handle function to obtain all current input states
+    handle();
+    //get relevant bit
+    bool state = CHECK_BIT(match_index, swNumber);
+    ESP_LOGI(TAG, "returned state of switch No. %d = %i", swNumber, (int)state);
+    return state;
+}
+
+bool switchesAnalog_getState_sw0(){
+    return switchesAnalog_getState(0);
+}
+bool switchesAnalog_getState_sw1(){
+    return switchesAnalog_getState(1);
+}
+bool switchesAnalog_getState_sw2(){
+    return switchesAnalog_getState(2);
+}
+bool switchesAnalog_getState_sw3(){
+    return switchesAnalog_getState(3);
+}

main/switchesAnalog.hpp

@@ -0,0 +1,21 @@
+#pragma once
+extern "C"
+{
+#include <stdio.h>
+#include <freertos/FreeRTOS.h>
+#include "esp_log.h"
+#include "driver/adc.h"
+#include <math.h>
+}
+
+#include "config.hpp"
+#include "gpio_adc.hpp"
+
+
+//get current state of certain switch
+bool switchesAnalog_getState(int swNumber);
+
+bool switchesAnalog_getState_sw0();
+bool switchesAnalog_getState_sw1();
+bool switchesAnalog_getState_sw2();
+bool switchesAnalog_getState_sw3();

pcb/4swToAdc.kicad_prl

@@ -0,0 +1,75 @@
+{
+  "board": {
+    "active_layer": 0,
+    "active_layer_preset": "",
+    "auto_track_width": true,
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "pads": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.6
+    },
+    "ratsnest_display_mode": 0,
+    "selection_filter": {
+      "dimensions": true,
+      "footprints": true,
+      "graphics": true,
+      "keepouts": true,
+      "lockedItems": true,
+      "otherItems": true,
+      "pads": true,
+      "text": true,
+      "tracks": true,
+      "vias": true,
+      "zones": true
+    },
+    "visible_items": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      8,
+      9,
+      10,
+      11,
+      12,
+      13,
+      14,
+      15,
+      16,
+      17,
+      18,
+      19,
+      20,
+      21,
+      22,
+      23,
+      24,
+      25,
+      26,
+      27,
+      28,
+      29,
+      30,
+      32,
+      33,
+      34,
+      35,
+      36
+    ],
+    "visible_layers": "fffffff_ffffffff",
+    "zone_display_mode": 0
+  },
+  "meta": {
+    "filename": "4-switches-to-adc.kicad_prl",
+    "version": 3
+  },
+  "project": {
+    "files": []
+  }
+}

pcb/4swToAdc.kicad_pro

@@ -0,0 +1,294 @@
+{
+  "board": {
+    "layer_presets": []
+  },
+  "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "erc": {
+    "erc_exclusions": [],
+    "meta": {
+      "version": 0
+    },
+    "pin_map": [
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        1,
+        0,
+        1,
+        2
+      ],
+      [
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        2,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        1,
+        1,
+        1,
+        1,
+        1,
+        0,
+        1,
+        1,
+        1,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        2,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2
+      ]
+    ],
+    "rule_severities": {
+      "bus_definition_conflict": "error",
+      "bus_entry_needed": "error",
+      "bus_label_syntax": "error",
+      "bus_to_bus_conflict": "error",
+      "bus_to_net_conflict": "error",
+      "different_unit_footprint": "error",
+      "different_unit_net": "error",
+      "duplicate_reference": "error",
+      "duplicate_sheet_names": "error",
+      "extra_units": "error",
+      "global_label_dangling": "warning",
+      "hier_label_mismatch": "error",
+      "label_dangling": "error",
+      "lib_symbol_issues": "warning",
+      "multiple_net_names": "warning",
+      "net_not_bus_member": "warning",
+      "no_connect_connected": "warning",
+      "no_connect_dangling": "warning",
+      "pin_not_connected": "error",
+      "pin_not_driven": "error",
+      "pin_to_pin": "warning",
+      "power_pin_not_driven": "error",
+      "similar_labels": "warning",
+      "unannotated": "error",
+      "unit_value_mismatch": "error",
+      "unresolved_variable": "error",
+      "wire_dangling": "error"
+    }
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "4-switches-to-adc.kicad_pro",
+    "version": 1
+  },
+  "net_settings": {
+    "classes": [
+      {
+        "bus_width": 12.0,
+        "clearance": 0.2,
+        "diff_pair_gap": 0.25,
+        "diff_pair_via_gap": 0.25,
+        "diff_pair_width": 0.2,
+        "line_style": 0,
+        "microvia_diameter": 0.3,
+        "microvia_drill": 0.1,
+        "name": "Default",
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
+        "track_width": 0.25,
+        "via_diameter": 0.8,
+        "via_drill": 0.4,
+        "wire_width": 6.0
+      }
+    ],
+    "meta": {
+      "version": 2
+    },
+    "net_colors": null
+  },
+  "pcbnew": {
+    "last_paths": {
+      "gencad": "",
+      "idf": "",
+      "netlist": "",
+      "specctra_dsn": "",
+      "step": "",
+      "vrml": ""
+    },
+    "page_layout_descr_file": ""
+  },
+  "schematic": {
+    "annotate_start_num": 0,
+    "drawing": {
+      "default_line_thickness": 6.0,
+      "default_text_size": 50.0,
+      "field_names": [],
+      "intersheets_ref_own_page": false,
+      "intersheets_ref_prefix": "",
+      "intersheets_ref_short": false,
+      "intersheets_ref_show": false,
+      "intersheets_ref_suffix": "",
+      "junction_size_choice": 3,
+      "label_size_ratio": 0.375,
+      "pin_symbol_size": 25.0,
+      "text_offset_ratio": 0.15
+    },
+    "legacy_lib_dir": "",
+    "legacy_lib_list": [],
+    "meta": {
+      "version": 1
+    },
+    "net_format_name": "",
+    "page_layout_descr_file": "",
+    "plot_directory": "",
+    "spice_adjust_passive_values": false,
+    "spice_external_command": "spice \"%I\"",
+    "subpart_first_id": 65,
+    "subpart_id_separator": 0
+  },
+  "sheets": [
+    [
+      "0534e379-8bf0-4abf-a148-fc91b6440529",
+      ""
+    ]
+  ],
+  "text_variables": {}
+}

pcb/4swToAdc.kicad_sch

@@ -0,0 +1,580 @@
+(kicad_sch (version 20211123) (generator eeschema)
+
+  (uuid 0534e379-8bf0-4abf-a148-fc91b6440529)
+
+  (paper "A4")
+
+  (lib_symbols
+    (symbol "Device:R" (pin_numbers hide) (pin_names (offset 0)) (in_bom yes) (on_board yes)
+      (property "Reference" "R" (id 0) (at 2.032 0 90)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Value" "R" (id 1) (at 0 0 90)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Footprint" "" (id 2) (at -1.778 0 90)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "~" (id 3) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "R res resistor" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Resistor" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_fp_filters" "R_*" (id 6) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "R_0_1"
+        (rectangle (start -1.016 -2.54) (end 1.016 2.54)
+          (stroke (width 0.254) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+      )
+      (symbol "R_1_1"
+        (pin passive line (at 0 3.81 270) (length 1.27)
+          (name "~" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+        (pin passive line (at 0 -3.81 90) (length 1.27)
+          (name "~" (effects (font (size 1.27 1.27))))
+          (number "2" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
+    (symbol "Switch:SW_Push" (pin_numbers hide) (pin_names (offset 1.016) hide) (in_bom yes) (on_board yes)
+      (property "Reference" "SW" (id 0) (at 1.27 2.54 0)
+        (effects (font (size 1.27 1.27)) (justify left))
+      )
+      (property "Value" "SW_Push" (id 1) (at 0 -1.524 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Footprint" "" (id 2) (at 0 5.08 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "~" (id 3) (at 0 5.08 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "switch normally-open pushbutton push-button" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Push button switch, generic, two pins" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "SW_Push_0_1"
+        (circle (center -2.032 0) (radius 0.508)
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 0 1.27)
+            (xy 0 3.048)
+          )
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 2.54 1.27)
+            (xy -2.54 1.27)
+          )
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (circle (center 2.032 0) (radius 0.508)
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (pin passive line (at -5.08 0 0) (length 2.54)
+          (name "1" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+        (pin passive line (at 5.08 0 180) (length 2.54)
+          (name "2" (effects (font (size 1.27 1.27))))
+          (number "2" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
+    (symbol "power:+3V3" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
+      (property "Reference" "#PWR" (id 0) (at 0 -3.81 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Value" "+3V3" (id 1) (at 0 3.556 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Footprint" "" (id 2) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "" (id 3) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "power-flag" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Power symbol creates a global label with name \"+3V3\"" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "+3V3_0_1"
+        (polyline
+          (pts
+            (xy -0.762 1.27)
+            (xy 0 2.54)
+          )
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 0 0)
+            (xy 0 2.54)
+          )
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 0 2.54)
+            (xy 0.762 1.27)
+          )
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+      )
+      (symbol "+3V3_1_1"
+        (pin power_in line (at 0 0 90) (length 0) hide
+          (name "+3V3" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
+    (symbol "power:GND" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
+      (property "Reference" "#PWR" (id 0) (at 0 -6.35 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Value" "GND" (id 1) (at 0 -3.81 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Footprint" "" (id 2) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "" (id 3) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "power-flag" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "GND_0_1"
+        (polyline
+          (pts
+            (xy 0 0)
+            (xy 0 -1.27)
+            (xy 1.27 -1.27)
+            (xy 0 -2.54)
+            (xy -1.27 -1.27)
+            (xy 0 -1.27)
+          )
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type none))
+        )
+      )
+      (symbol "GND_1_1"
+        (pin power_in line (at 0 0 270) (length 0) hide
+          (name "GND" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
+  )
+
+  (junction (at 48.26 87.63) (diameter 0) (color 0 0 0 0)
+    (uuid 0595abd2-5372-4996-8c85-ea8e7ba6eaf5)
+  )
+  (junction (at 48.26 57.15) (diameter 0) (color 0 0 0 0)
+    (uuid 376c3252-bee9-4eae-8c35-3e8d8aea79a1)
+  )
+  (junction (at 60.96 57.15) (diameter 0) (color 0 0 0 0)
+    (uuid 37f07ef8-0bd0-4983-9e87-070da97b8027)
+  )
+  (junction (at 60.96 87.63) (diameter 0) (color 0 0 0 0)
+    (uuid b858a0b2-392b-42b8-814d-97eec6d10cf5)
+  )
+  (junction (at 73.66 57.15) (diameter 0) (color 0 0 0 0)
+    (uuid caf3ed74-8f3c-4ea2-9837-cc564ece24fc)
+  )
+  (junction (at 86.36 57.15) (diameter 0) (color 0 0 0 0)
+    (uuid e422a210-4268-4494-969d-097a39cbc71b)
+  )
+  (junction (at 73.66 87.63) (diameter 0) (color 0 0 0 0)
+    (uuid f688351c-21fd-46ff-a90d-cc366df00758)
+  )
+
+  (wire (pts (xy 60.96 57.15) (xy 60.96 60.325))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 04af43fa-9f39-49fa-af8f-f49b7bc05656)
+  )
+  (wire (pts (xy 60.96 84.455) (xy 60.96 87.63))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 0540396a-1bc2-4b04-906e-7d83c6b66195)
+  )
+  (wire (pts (xy 48.26 87.63) (xy 48.26 92.075))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 1787faca-1557-4d40-a0c4-911d17f0770d)
+  )
+  (wire (pts (xy 86.36 67.945) (xy 86.36 74.295))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 23b2ab5f-bdf4-4212-b143-bb49653e1b88)
+  )
+  (wire (pts (xy 48.26 57.15) (xy 48.26 60.325))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 25a6a709-3fde-41fe-9a0e-cb508d73834a)
+  )
+  (wire (pts (xy 73.66 84.455) (xy 73.66 87.63))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 2bc4885e-1811-40f7-9a6d-34ed596c1add)
+  )
+  (wire (pts (xy 48.26 41.275) (xy 48.26 45.085))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 2c7d8342-fe94-4a1b-baec-58cd6c3eeca7)
+  )
+  (wire (pts (xy 48.26 67.945) (xy 48.26 74.295))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 45921a4d-adb5-4631-b0f7-53468659bc65)
+  )
+  (wire (pts (xy 73.66 87.63) (xy 60.96 87.63))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 480fea58-4754-4988-b652-79892cbd4343)
+  )
+  (polyline (pts (xy 38.1 33.02) (xy 110.49 33.02))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 4d5b9ff9-ca59-4c44-bce2-c776250d20c0)
+  )
+
+  (wire (pts (xy 60.96 87.63) (xy 48.26 87.63))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 5f8390d2-5874-477d-abd8-600f48800de1)
+  )
+  (wire (pts (xy 73.66 57.15) (xy 73.66 60.325))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 689d4ae4-8fb6-467c-812a-f8189081bfa8)
+  )
+  (wire (pts (xy 60.96 57.15) (xy 48.26 57.15))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 69ba96dd-74a8-4f3b-85f6-a998f64b3b7e)
+  )
+  (wire (pts (xy 86.36 87.63) (xy 73.66 87.63))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 76bc9488-bd39-4e7f-ba21-8968e45bafbd)
+  )
+  (polyline (pts (xy 38.1 102.87) (xy 110.49 102.87))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 8fda66e6-cca3-4608-bf63-d40d2a979623)
+  )
+
+  (wire (pts (xy 86.36 60.325) (xy 86.36 57.15))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 92724cbb-f787-4755-8c00-fdaff5e7ac81)
+  )
+  (wire (pts (xy 86.36 57.15) (xy 92.71 57.15))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 937bec40-8b53-4b31-acdc-755c933ec2ac)
+  )
+  (wire (pts (xy 48.26 52.705) (xy 48.26 57.15))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 9a9c3b93-5397-4f20-8b92-a2c37f8c1874)
+  )
+  (wire (pts (xy 86.36 57.15) (xy 73.66 57.15))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 9c65a4d5-2a36-456c-8138-19c6cad951eb)
+  )
+  (wire (pts (xy 60.96 67.945) (xy 60.96 74.295))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid a02e604e-10c2-4767-a22d-4a461b77881e)
+  )
+  (polyline (pts (xy 38.1 33.655) (xy 38.1 102.87))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid a2c30be3-07c7-4998-a3ab-a45d0d1aa278)
+  )
+
+  (wire (pts (xy 73.66 57.15) (xy 60.96 57.15))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid acd9d380-e80b-4364-af24-ac27f88537b5)
+  )
+  (wire (pts (xy 73.66 67.945) (xy 73.66 74.295))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid c5dfc4f2-d3c5-4fe8-81cc-954989ded559)
+  )
+  (wire (pts (xy 86.36 84.455) (xy 86.36 87.63))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid e013a703-8a26-45b6-b9ca-6cd0b0a9ceef)
+  )
+  (wire (pts (xy 48.26 84.455) (xy 48.26 87.63))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid e3a717ef-7fbb-42fd-bed3-8552fcbf95b5)
+  )
+  (polyline (pts (xy 110.49 102.87) (xy 110.49 33.02))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid f442d4ab-f8ba-49f9-b732-68585ed0f198)
+  )
+
+  (text "Stripboard\n4 switches to 1 analog input" (at 78.74 38.735 0)
+    (effects (font (size 1.27 1.27) (thickness 0.254) bold) (justify left bottom))
+    (uuid c525c9cc-a4a1-4f6e-a0cf-a2cc3419b679)
+  )
+
+  (global_label "esp32 ADC" (shape input) (at 92.71 57.15 0) (fields_autoplaced)
+    (effects (font (size 1.27 1.27)) (justify left))
+    (uuid b8dbce7d-0a95-4573-b764-9e68bdd24326)
+    (property "Intersheet References" "${INTERSHEET_REFS}" (id 0) (at 105.4041 57.0706 0)
+      (effects (font (size 1.27 1.27)) (justify left) hide)
+    )
+  )
+
+  (symbol (lib_id "power:GND") (at 48.26 92.075 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 07a9d758-a267-455f-b30c-3770f3527e7a)
+    (property "Reference" "#PWR?" (id 0) (at 48.26 98.425 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "GND" (id 1) (at 48.26 97.155 0))
+    (property "Footprint" "" (id 2) (at 48.26 92.075 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 48.26 92.075 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid e41399a7-f60b-4a80-a126-be056cb007e9))
+  )
+
+  (symbol (lib_id "Switch:SW_Push") (at 60.96 79.375 90) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 28a1ca96-47e6-44c9-b9dc-c435e73ae941)
+    (property "Reference" "SW2" (id 0) (at 62.23 79.3749 90)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (property "Value" "SW_Push" (id 1) (at 62.23 80.6449 90)
+      (effects (font (size 1.27 1.27)) (justify right) hide)
+    )
+    (property "Footprint" "" (id 2) (at 55.88 79.375 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 55.88 79.375 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 8b2bb3c1-68dc-4a33-bbda-8e3f735cb89c))
+    (pin "2" (uuid 19313efc-c6f8-4165-9f12-2f4d196a0916))
+  )
+
+  (symbol (lib_id "Switch:SW_Push") (at 86.36 79.375 90) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 3742357e-3d4f-4d99-8094-756d8329e07a)
+    (property "Reference" "SW0" (id 0) (at 87.63 79.3749 90)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (property "Value" "SW_Push" (id 1) (at 87.63 80.6449 90)
+      (effects (font (size 1.27 1.27)) (justify right) hide)
+    )
+    (property "Footprint" "" (id 2) (at 81.28 79.375 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 81.28 79.375 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid ed19ccea-334b-4c85-8502-092081da9b5f))
+    (pin "2" (uuid 2f87aad1-080c-4cf8-9298-8cf8962ebf0b))
+  )
+
+  (symbol (lib_id "Device:R") (at 48.26 48.895 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 6eeba788-57b9-45a8-981d-ecd17efd1d54)
+    (property "Reference" "R_up" (id 0) (at 50.8 47.6249 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "1k" (id 1) (at 50.8 50.1649 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (id 2) (at 46.482 48.895 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 48.26 48.895 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid a7fb192a-733f-4bea-a1d7-a207050754dc))
+    (pin "2" (uuid 76ba5816-0ef3-41eb-80a7-15d3d0d4102f))
+  )
+
+  (symbol (lib_id "Device:R") (at 48.26 64.135 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 769febe6-b95c-4d37-94fa-e3721ea908aa)
+    (property "Reference" "R3" (id 0) (at 50.8 62.8649 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "1k" (id 1) (at 50.8 65.4049 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (id 2) (at 46.482 64.135 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 48.26 64.135 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid f91d18bf-da3d-43fe-8b9a-c8f17a1ef730))
+    (pin "2" (uuid 0e5a0907-c70d-45b4-9b1e-755718f7bf45))
+  )
+
+  (symbol (lib_id "Switch:SW_Push") (at 48.26 79.375 90) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 864b1f85-f995-433a-9a94-7965edbddf3c)
+    (property "Reference" "SW3" (id 0) (at 49.53 79.375 90)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (property "Value" "SW_Push" (id 1) (at 49.53 80.6449 90)
+      (effects (font (size 1.27 1.27)) (justify right) hide)
+    )
+    (property "Footprint" "" (id 2) (at 43.18 79.375 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 43.18 79.375 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid ddb4c830-ad05-4916-ada4-5d3ceca231c4))
+    (pin "2" (uuid 1b4f3986-79e7-4778-acb7-b047f55e11e8))
+  )
+
+  (symbol (lib_id "Device:R") (at 60.96 64.135 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 8c50ab84-72ab-438d-a9f1-a710a33b8e06)
+    (property "Reference" "R2" (id 0) (at 63.5 62.8649 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "2k2" (id 1) (at 63.5 65.4049 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (id 2) (at 59.182 64.135 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 60.96 64.135 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid c171a640-9d38-495e-a5d9-7d8f95ea6fee))
+    (pin "2" (uuid 5e366793-5e2a-4a8a-ba3c-8de861c6f28d))
+  )
+
+  (symbol (lib_id "Switch:SW_Push") (at 73.66 79.375 90) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid 93d3db7a-9c33-4a6b-8a4f-9c98164fe8b8)
+    (property "Reference" "SW1" (id 0) (at 74.93 79.3749 90)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (property "Value" "SW_Push" (id 1) (at 74.93 80.6449 90)
+      (effects (font (size 1.27 1.27)) (justify right) hide)
+    )
+    (property "Footprint" "" (id 2) (at 68.58 79.375 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 68.58 79.375 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 5f3464d1-5065-4af5-a2f2-3aa2e6eda618))
+    (pin "2" (uuid bd5f3ec3-2c19-4b99-96ae-a4b755f1a5e1))
+  )
+
+  (symbol (lib_id "power:+3V3") (at 48.26 41.275 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid a516e0a9-fe24-4120-873c-6f89d1fb49c0)
+    (property "Reference" "#PWR?" (id 0) (at 48.26 45.085 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "+3V3" (id 1) (at 48.26 36.195 0))
+    (property "Footprint" "" (id 2) (at 48.26 41.275 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 48.26 41.275 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 7edde932-e6ea-4bb3-80d2-0dfb0b34dfdf))
+  )
+
+  (symbol (lib_id "Device:R") (at 73.66 64.135 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid e38a88e5-32b2-4c8e-8e29-fd613e9fce2a)
+    (property "Reference" "R1" (id 0) (at 76.2 62.8649 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "4k7" (id 1) (at 76.2 65.4049 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (id 2) (at 71.882 64.135 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 73.66 64.135 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid 14717925-77d8-4e5b-87f4-d527a7df25a2))
+    (pin "2" (uuid 042328ba-54db-4f0f-b129-1e89e595aa37))
+  )
+
+  (symbol (lib_id "Device:R") (at 86.36 64.135 0) (unit 1)
+    (in_bom yes) (on_board yes) (fields_autoplaced)
+    (uuid f9457597-177c-435c-90d9-f31193f60883)
+    (property "Reference" "R0" (id 0) (at 88.9 62.8649 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "8k2" (id 1) (at 88.9 65.4049 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (id 2) (at 84.582 64.135 90)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 86.36 64.135 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (pin "1" (uuid a698459c-2acc-4346-a3d9-ec53ed63917d))
+    (pin "2" (uuid c6c22bf2-3a43-4c40-940f-495f13d46fdd))
+  )
+
+  (sheet_instances
+    (path "/" (page "1"))
+  )
+
+  (symbol_instances
+    (path "/07a9d758-a267-455f-b30c-3770f3527e7a"
+      (reference "#PWR?") (unit 1) (value "GND") (footprint "")
+    )
+    (path "/a516e0a9-fe24-4120-873c-6f89d1fb49c0"
+      (reference "#PWR?") (unit 1) (value "+3V3") (footprint "")
+    )
+    (path "/f9457597-177c-435c-90d9-f31193f60883"
+      (reference "R0") (unit 1) (value "8k2") (footprint "")
+    )
+    (path "/e38a88e5-32b2-4c8e-8e29-fd613e9fce2a"
+      (reference "R1") (unit 1) (value "4k7") (footprint "")
+    )
+    (path "/8c50ab84-72ab-438d-a9f1-a710a33b8e06"
+      (reference "R2") (unit 1) (value "2k2") (footprint "")
+    )
+    (path "/769febe6-b95c-4d37-94fa-e3721ea908aa"
+      (reference "R3") (unit 1) (value "1k") (footprint "")
+    )
+    (path "/6eeba788-57b9-45a8-981d-ecd17efd1d54"
+      (reference "R_up") (unit 1) (value "1k") (footprint "")
+    )
+    (path "/3742357e-3d4f-4d99-8094-756d8329e07a"
+      (reference "SW0") (unit 1) (value "SW_Push") (footprint "")
+    )
+    (path "/93d3db7a-9c33-4a6b-8a4f-9c98164fe8b8"
+      (reference "SW1") (unit 1) (value "SW_Push") (footprint "")
+    )
+    (path "/28a1ca96-47e6-44c9-b9dc-c435e73ae941"
+      (reference "SW2") (unit 1) (value "SW_Push") (footprint "")
+    )
+    (path "/864b1f85-f995-433a-9a94-7965edbddf3c"
+      (reference "SW3") (unit 1) (value "SW_Push") (footprint "")
+    )
+  )
+)