raspberry pi can bus hat
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README.md
··· 1 1 # can-hat 2 2 3 - can hat design for raspberry pis 3 + ![the main schematic](https://cdn.hackclub.com/019dc829-20e5-78ac-9db8-4ea4736f9ba4/can-hat.svg) 4 + ![the can channel schematic](https://cdn.hackclub.com/019dc829-1d3c-7ace-a1cf-2922d84d61cc/can_channel.svg) 4 5 5 6 The canonical repo for this is hosted on tangled over at [`dunkirk.sh/can-hat`](https://tangled.org/dunkirk.sh/can-hat) 6 7 7 8 ## BOM 8 9 9 - | Component | LCSC # | Qty | Placement | 10 - |---|---|---|---| 11 - | MCP2518FDT-H/SL | C626759 | 3 | Hand solder | 12 - | MCP2562FDT-E/SN | C511335 | 3 | Hand solder | 13 - | OVETGLJANF-40MHZ | C295515 | 3 | Hand solder | 14 - | AT24C32D-SSHM-T | search LCSC | 1 | Hand solder | 15 - | 100nF 0603 X7R | basic | ~10 | PCBA | 16 - | 10µF 0805 | basic | 2 | PCBA | 17 - | 120Ω 0603 | basic | 3 | PCBA | 18 - | 10kΩ 0603 | basic | 6 | PCBA | 19 - | 3.9kΩ 0603 | basic | 2 | PCBA | 20 - | 15EDGVC-3.5-02P (header) | search Degson | 3 | Hand solder | 21 - | 15EDGKNM-3.5-02P (plug) | search Degson | 3 | Wire side | 22 - | 2×20 stacking header | — | 1 | Hand solder | 10 + | Name | Purpose | Quantity | Total Cost (USD) | Distributor | 11 + |---|---|---|---|---| 12 + | [2×20 40-pin stacking female header](https://www.amazon.com/dp/B0827THC7R) | 15-16mm pin length to clear Pi 5 active cooler, hand solder | 1 | $9.90 | Amazon | 13 + | [10kΩ 0603](https://www.lcsc.com/product-detail/C25803.html) | MCP2518FD RESET pull-up and MCP2562FD STBY pull-down, PCBA | 100 | $0.18 | LCSC | 14 + | [1kΩ 0603](https://www.lcsc.com/product-detail/C21190.html) | EEPROM write-protect pull-up to 3.3V, PCBA | 100 | $0.16 | LCSC | 15 + | [3.9kΩ 0603](https://www.lcsc.com/product-detail/C23196.html) | EEPROM SDA/SCL pull-ups to 3.3V, PCBA | 100 | $0.16 | LCSC | 16 + | [120Ω 0603](https://www.lcsc.com/product-detail/C25879.html) | CAN bus termination resistors, one per channel, PCBA | 100 | $0.09 | LCSC | 17 + | [10µF 0805](https://www.lcsc.com/product-detail/C15850.html) | Bulk caps for 3.3V and 5V rails, PCBA | 20 | $0.43 | LCSC | 18 + | [100nF 0603 X7R](https://www.lcsc.com/product-detail/C14663.html) | Decoupling caps for all ICs, PCBA | 100 | $0.30 | LCSC | 19 + | [15EDGRC-3.5-02P (plug & header)](https://www.lcsc.com/product-detail/C5632692.html) | PCB-side right-angle pluggable terminal block, 3.5mm pitch, 2-pin, hand solder | 10 | $3.21 | LCSC | 20 + | [AT24C32D-SSHM-T](https://www.lcsc.com/product-detail/C60583.html) | 32Kbit I2C EEPROM for HAT ID, SOIC-8, hand solder | 5 | $1.48 | LCSC | 21 + | [OVETGLJANF-40MHZ](https://www.lcsc.com/product-detail/C295515.html) | 40MHz active oscillator, 3.3V, SMD5032-4P, hand solder | 11 | $6.14 | LCSC | 22 + | [MCP2562FDT-E/SN](https://www.lcsc.com/product-detail/C511335.html) | CAN FD transceiver with VIO pin, SOIC-8, hand solder | 11 | $12.87 | LCSC | 23 + | [MCP2518FDT-H/SL](https://www.lcsc.com/product-detail/C626759.html) | CAN FD SPI controller, SOIC-14, hand solder | 11 | $27.07 | LCSC | 23 24 24 25 The AT24C32D write-protect pin should have a jumper pad or test point so it can be pulled low to flash, then left pulled high permanently after. 25 26