HardLabs

Canhat

onitake·canhat

Canhat PCB layout, top view — open source Raspberry Pi board by onitake
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About the Canhat PCB

Canhat is an open source Raspberry Pi PCB design by onitake, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 65 × 30 mm, with 37 components from 27 distinct parts.

Its main chip is the Raspberry_Pi_2_3, from the Raspberry Pi family. Other key parts include the MCP2515-xSO, SN65HVDA541, AT24C32-SSHM and AP63205. By type, the board carries 10 capacitors, 9 resistors, 5 jumpers, 4 ICs, 4 connectors and 2 diodes.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

Raspberry Pi CAN extension board

This little board extends the Raspberry Pi with a CAN interface, a 5V regulator to supply the Pi with power and a pin header to access some GPIO lines.

The board outline and component placement conform to the [Micro HAT specification] and the [Add-On Boards and HATs] specification. It is designed to fit the Raspberry Pi Zero, but can also be mounted to other models. (Pi 2, 3, 4, ...)

Main components on the Canhat

MCP2515-xSOSN65HVDA541AT24C32-SSHMAP63205

Canhat bill of materials (BOM)

37 components, 27 distinct parts.

QtyPartRefs
1
MCP2515-xSO
U1
1
SN65HVDA541
U2
1
AT24C32-SSHM
U3
1
AP63205
U4
1
16MHz
Y1
1
Raspberry_Pi_2_3
J1
1
CAN In/Out/GND
J2
1
GPIO
J3
1
12V
J5
1
2920L200
F1
1
EEPROM Write Enable
JP1
1
IOCTL
JP2
1
3VIO
JP3
1
VBUS
JP4
1
5VIN
JP5
1
D20V0L1B2WS
D1
1
SS24
D2
1
4.7u
L1
2
22p
C1, C2
1
10u
C3
Show 7 more
QtyPartRefs
4
100n
C4, C6, C7, C10
1
10u/25V
C9
2
22u
C12, C13
1
10k
R1
5
1k
R2, R11, R12, R13, R14
2
3k9
R3, R4
1
0
R5

Canhat design files

The KiCad project lives in the onitake/canhat repository on GitHub; these links point at the commit this page was built from.

Canhat: common questions

What microcontroller does the Canhat use?

The Canhat is built around the Raspberry_Pi_2_3, from the Raspberry Pi family.

How big is the Canhat PCB?

The Canhat measures 65 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Canhat?

37 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Canhat design files?

From the onitake/canhat repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Canhat design in my own project?

Yes, under the terms of its CERN-OHL-1.2 license, which onitake chose for the repository.

Can I test firmware for the Canhat without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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