Pi-Hat
About the Pi-Hat
Pi-Hat is an open source Raspberry Pi PCB design by FYNCH-BIO, published on GitHub. It is a 2-layer board measuring 65 × 56 mm, with 28 components from 18 distinct parts.
Its main chip is the raspberrypi_hat:OX40HAT, from the Raspberry Pi family. Other key parts include the MAX481. By type, the board carries 8 resistors, 7 connectors, 3 transistors, 3 capacitors, 2 diodes and 1 IC.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
eVOLVER Hardware (PCB, 3D printed parts)
For more information on the platform, check out our Nature Biotech publication.
For information on building, troubleshooting, and running experiments on the platform, reach out to us on the eVOLVER forum and read the wiki.
Main components on the Pi-Hat
Pi-Hat bill of materials (BOM)
28 components, 18 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CONN_02X12 MAX481 | SO-8 | U1 |
| 2 | 2N7002 | 2N7002 | Q3, Q4 |
| 1 | BSS123 | 2N7002 | Q5 |
| 1 | raspberrypi_hat:OX40HAT | Connector_PinSocket_2.54mm | J1 |
| 1 | Header_10Pin | 10Pin_Header | J2 |
| 2 | Header_8Pin | 8Pin_Header | J3, J5 |
| 1 | CONN_02X03 Header_8Pin | 8Pin_Header | J4 |
| 1 | RJ14 | 609-5080-ND | J6 |
| 1 | RJ14 2Screw_Term | 277-1667-ND | J7 |
| 4 | 3mm_Mounting_Hole | MH_plated | H1, H2, H3, H4 |
| 2 | LED | LED_0603 | D1, D2 |
| 3 | 1UF 1uF | C_0805_HS | C1, C2, C3 |
| 1 | 20K 510 | R_805_HS | R1 |
| 1 | 10K 510 | R_805_HS | R2 |
| 1 | 10K DNP | R_805_HS | R3 |
| 2 | 10K 10k | R_805_HS | R4, R5 |
| 1 | DNP | R_805_HS | R6 |
| 2 | 10k | R_805_HS | R10, R12 |
Pi-Hat design files
The KiCad project lives in the FYNCH-BIO/hardware repository on GitHub; these links point at the commit this page was built from.
Pi-Hat: common questions
What microcontroller does the Pi-Hat use?
The Pi-Hat is built around the raspberrypi_hat:OX40HAT, from the Raspberry Pi family.
How big is the Pi-Hat?
The Pi-Hat measures 65 × 56 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Pi-Hat?
28 components, from 18 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Pi-Hat design files?
From the FYNCH-BIO/hardware repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Pi-Hat design in my own project?
The repository has no license, so all rights stay with FYNCH-BIO. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Pi-Hat 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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