CANopy#
The canonical repo for this is hosted on tangled over at dunkirk.sh/CANopy
BOM#
| Name | Purpose | Quantity | Total Cost (USD) | Distributor |
|---|---|---|---|---|
| 2×20 40-pin stacking female header | 15-16mm pin length to clear Pi 5 active cooler, hand solder | 1 | $9.90 | Amazon |
| 10kΩ 0603 | MCP2518FD RESET pull-up and MCP2562FD STBY pull-down, PCBA | 100 | $0.18 | LCSC |
| 1kΩ 0603 | EEPROM write-protect pull-up to 3.3V, PCBA | 100 | $0.16 | LCSC |
| 3.9kΩ 0603 | EEPROM SDA/SCL pull-ups to 3.3V, PCBA | 100 | $0.16 | LCSC |
| 120Ω 0603 | CAN bus termination resistors, one per channel, PCBA | 100 | $0.09 | LCSC |
| 10µF 0805 | Bulk caps for 3.3V and 5V rails, PCBA | 20 | $0.43 | LCSC |
| 1µF 0603 X5R | Decoupling caps for all ICs, PCBA | 100 | $0.56 | LCSC |
| 15EDGRC-3.5-02P (plug & header) | PCB-side right-angle pluggable terminal block, 3.5mm pitch, 2-pin, hand solder | 10 | $3.21 | LCSC |
| AT24C32D-SSHM-T | 32Kbit I2C EEPROM for HAT ID, SOIC-8, hand solder | 5 | $1.48 | LCSC |
| OVETGLJANF-40MHZ | 40MHz active oscillator, 3.3V, SMD5032-4P, hand solder | 11 | $6.14 | LCSC |
| MCP2562FDT-E/SN | CAN FD transceiver with VIO pin, SOIC-8, hand solder | 11 | $12.87 | LCSC |
| MCP2518FDT-H/SL | CAN FD SPI controller, SOIC-14, hand solder | 11 | $27.07 | LCSC |
For use with the SystemCore the RSL can be emulated via the following
# pseudocode
gpio = /sys/class/gpio/gpioXX/value
while True:
enabled = read("/sys/kernel/can_heartbeat/enabledro")
gpio.write(enabled)
# add blink pattern logic for disabled state
sleep(0.05)
todo#
- add testpoints on i2c and can rx/tx 0.1" header
- add termination resister jumper (dip switch block)
- add rsl mosfet switching ground
- 5v 5a pololu
- new screw blocks DEGSON DG500-5.08-02P-14-00A(H)
- esd diodes on the gpio pins for rsl
- 120 ohm differential pairs for can
© 2026-present Kieran Klukas
