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Add filter-pcb for denoising stepper signals

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When the VFD was running the stepper driver did not work correctly.
The especially the DIR signal got unusable and triggered randomly.

Add custom stripboard that reduces the noise on DIR and PULSE data
lines.
The circuit simply increases the current in the data lines significantly
and crops the voltage to 0-5V using a zener diode.
While testing with an oscilloscope the circuit seems effective.

- add kicad schematic
- add spreadsheet with stripboard layout
- update connection: plan with stripboard, update changed 5V connection
This commit is contained in:
jonny_ji7 2023-03-02 23:12:52 +01:00
parent 6c9b1b6fcf
commit 423348be9f
11 changed files with 1638 additions and 1 deletions
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3
.gitignore vendored
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@ -10,3 +10,6 @@ build
# freecad backup files # freecad backup files
*.FCStd1 *.FCStd1
# kicad backup files
pcb/*/*backups/

2
connection-plan.drawio
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connection-plan.drawio.pdf
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0
pcb/4swToAdc.kicad_prl → pcb/4swToAdc/4swToAdc.kicad_prl
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0
pcb/4swToAdc.kicad_pro → pcb/4swToAdc/4swToAdc.kicad_pro
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0
pcb/4swToAdc.kicad_sch → pcb/4swToAdc/4swToAdc.kicad_sch
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0
pcb/4swToAdc_stripboard-calc.ods → pcb/4swToAdc/4swToAdc_stripboard-calc.ods
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pcb/stepper-filter/filter_stripboard.ods Normal file
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pcb/stepper-filter/stepper-filter.kicad_prl Normal file
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@ -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
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"ratsnest_display_mode": 0,
"selection_filter": {
"dimensions": true,
"footprints": true,
"graphics": true,
"keepouts": true,
"lockedItems": true,
"otherItems": true,
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"files": []
}
}

294
pcb/stepper-filter/stepper-filter.kicad_pro Normal file
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@ -0,0 +1,294 @@
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"global_label_dangling": "warning",
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"multiple_net_names": "warning",
"net_not_bus_member": "warning",
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"pin_not_connected": "error",
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"pin_to_pin": "warning",
"power_pin_not_driven": "error",
"similar_labels": "warning",
"unannotated": "error",
"unit_value_mismatch": "error",
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pcb/stepper-filter/stepper-filter.kicad_sch Normal file
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