Pi3 hat
About the Pi3 hat
Pi3 hat is an open source STM32 PCB design by Jayanth-M0625, published on GitHub. It is a 4-layer board measuring 56.5 × 65 mm, with 135 components from 43 distinct parts.
Its main chip is the STM32G474CEU6, from the STM32 family. Other key parts include the MAX17504ATP+T, DMMT5401, DMG2305UX, LTC2875 and BMI088LGA16. By type, the board carries 46 capacitors, 31 resistors, 14 ICs, 8 diodes, 3 connectors and 3 jumpers.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
Work at MRL
Main components on the Pi3 hat
Pi3 hat bill of materials (BOM)
135 components, 43 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MAX17504ATP+T | 21-0140L_T2055-4_MXM | U1 |
| 1 | DMMT5401 | SOT26 | U2 |
| 1 | DMG2305UX | SOT23 | U3 |
| 3 | STM32G474CEU6 | QFN50P700X700X60-49N | U4, U7, U11 |
| 5 | LTC2875 | SOIC8 | U5, U6, U9, U12, U13 |
| 1 | BMI088LGA16 | LGA16 | U8 |
| 1 | CAT24C32UDFN8 | UDFN8_2X3_ONS | U10 |
| 1 | ICM-42688-P | PQFN50P300X250X97-14N | U14 |
| 2 | XT30P | XT30P | J1, J2 |
| 1 | — | 2X20FLIP | J4 |
| 14 | PAD24AWG_PAD | 24AWG_PAD | +5V0, GND0, REGOUT0, SPI0_CS0, SPI0_MISO0, SPI0_MOSI0, SPI0_SCLK0, SPI1_CS0 +6 |
| 1 | MFU0603FF04000P100 | FUS_VISHAY_MFU0603 | F1 |
| 1 | — | 1X04_325 | I2C0 |
| 5 | JST-PH3SMT_VERT | JST_B3B_PH-SM4-TB(LF)(SN) | JC1, JC2, JC3, JC4, JC5 |
| 3 | JST-ZH6SMT_VERT | JST_B6B-ZR-SM4-TF(LF)(SN) | JD1, JD2, JD3 |
| 1 | — | 1X03_325 | JP6 |
| 2 | — | 1X01_420 | JP7, JP8 |
| 1 | — | dummyfp0 | UNK_HOLE_0 |
| 1 | — | dummyfp1 | UNK_HOLE_1 |
| 1 | — | dummyfp2 | UNK_HOLE_2 |
Show 23 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | — | dummyfp3 | UNK_HOLE_3 |
| 1 | — | 1X03_325 | UT0 |
| 7 | MF-LED-0603-RED | LED0603 | D1, D2, D3, D4, D5, D6, D7 |
| 1 | — | DO214AA_210 | D12 |
| 1 | 10uF | IND_YUDEN_NS10165_YDN | L1 |
| 2 | .1uF 100V | C0805 | C1, C5 |
| 2 | 4.7uF 100V | C1206 | C2, C3 |
| 1 | 0.01uF | C0603 | C4 |
| 5 | 10uF | C1206 | C6, C14, C23, C29, C37 |
| 2 | 22uF 16V | C1210 | C7, C8 |
| 31 | 0.1uF | C0402 | C9, C10, C12, C13, C15, C16, C17, C18 +23 |
| 3 | 1uF | C0402 | C11, C20, C34 |
| 3 | 4.7k | R0402 | R1, R15, R16 |
| 2 | 105k | R0402 | R2, R21 |
| 1 | 22.1k | R0402 | R3 |
| 1 | 560 | R0402 | R4 |
| 1 | 10k 1% | R0603 | R5 |
| 1 | 53.6k 1% | R0603 | R6 |
| 6 | 220 | R0402 | R7, R8, R11, R12, R17, R18 |
| 5 | 120 | R0402 | R9, R10, R13, R19, R20 |
| 1 | 1k | R0402 | R14 |
| 2 | DNP | R0402 | R22, R24 |
| 8 | 0 | R0402 | R23, R25, R26, R27, R28, R29, R30, R31 |
Pi3 hat design files
The KiCad project lives in the Jayanth-M0625/MRL repository on GitHub; these links point at the commit this page was built from.
Pi3 hat: common questions
What microcontroller does the Pi3 hat use?
The Pi3 hat is built around the STM32G474CEU6, from the STM32 family.
How big is the Pi3 hat?
The Pi3 hat measures 56.5 × 65 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Pi3 hat?
135 components, from 43 distinct parts. The full bill of materials is listed on this page.
Where can I download the Pi3 hat design files?
From the Jayanth-M0625/MRL repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Pi3 hat design in my own project?
The repository has no license, so all rights stay with Jayanth-M0625. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Pi3 hat without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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