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encoder-i2c

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@prosper00

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KiCad projectAll 34 files, ready to open in KiCad362 KB
For fabricationGerbers, drill, pick-and-place and BOMGerbers and drill zip94 KBGerbers and drill zip: encoder-to-i2c33 KBGerbers and drill zip: encoder-to-i2c-tssop20.kicad_pro53 KBGerbers and drill zip: encoder-to-i2c-tssop20.kicad_pro_panelized182 KBPick and place (CSV)3.4 KBPick and place (CSV): encoder-to-i2c1.4 KBPick and place (CSV): encoder-to-i2c-tssop20.kicad_pro3.7 KBPick and place (CSV): encoder-to-i2c-tssop20.kicad_pro_panelized22 KBBOM CSV9.5 KB
Schematic PDFEvery sheet, to read or print116 KB
3D modelThe board with its parts, for an enclosure (GLB)3D model (GLB)2.5 MB3D model (GLB): encoder-to-i2c995 KB3D model (GLB): encoder-to-i2c-tssop20.kicad_pro1.9 MB3D model (GLB): encoder-to-i2c-tssop20.kicad_pro_panelized13 MB
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README

simple ch32v003 firmware to read a rotary encoder input device, and convert it to i2c.

Usage / notes

  • configured for a CH32V003 SOP8 package
  • encoder inputs are connected to PA1 and PA2
  • encoder pushbutton is connected to PC4
  • all encoder pins are externally RC debounced and pulled up [ see /hardware for schematic ]
  • device is configured as an i2c slave device on address 0x09.
  • 'read' two bytes: the first byte is the rotation value, and the second byte indicates whether the button has been pressed
  • values are reset to zero after a read
  • no software debounce or acceleration scaling has been implemented
  • i2c writes not currently implemented. TODO: update this firmware for a 20-pin package, and use writes to light LEDs
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