4 layers36 × 50.2 mm
Racer
StuckAtPrototype/Racer
These are structured into their own files. I could have used submodules, but decided against it.
83 parts3.8kApache-2.0
2 layers124 × 44 mm
Pi pico
Minnowfeather/minnowboard1pro micro based drop-in for DJDao SVSE5/SVRE9
- Size
- 124 × 44 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 53
- Pads
- 181
- Tracks, vias
- 245, 26
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Jun 2025
- Updated
- 7 May 2026
Overview
Pi pico is an open-source printed circuit board by Minnowfeather, from the Minnowfeather/minnowboard repository on GitHub. It is a 2-layer board of 124 × 44 mm with 25 parts on 53 nets, routed with 245 tracks and 26 vias.
It is built around the BSS138. Its parts include 9 connectors, 7 transistors, 2 resistors and 1 capacitor. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdDJDao PCB Drop-in Replacement
| Version | Front | Back |
|---|---|---|
| Pico |  |  |
| Leonardo | WIP | WIP |
This project aims to be a drop-in replacement for DJDao SVSE5 and SVRE9 PCBs. Currently only supports potentiometers and DJDao-style wiring.
Pin assignments
Pi Pico
Button assignments
| Button | Data | LED |
|---|---|---|
| BT-A | 0 | 10 |
| BT-B | 2 | 8 |
| BT-C | 4 | 13 |
| BT-D | 6 | 11 |
| FX-L | 1 | 9 |
| FX-R | 14 | 12 |
| Start | 3 | 7 |
Knob assignments
| Knob | Pot | Enc A | Enc B |
|---|---|---|---|
| VOL-L | 16 | 16 | 17 |
| VOL-R | 17 | 18 | 19 |
Flick the switch (pin 20) to toggle between Potentiometer and Encoder mode.
Code
In progress
Known Issues
Leonardo V1
- Pots are jittery, affected by the LEDs, and each other(?)
- Button pins have swapped GND and 5V
Leonardo V2
- Pots are a bit jittery.
- Pro Micro footprint is actually a Teensy 2.0 footprint. This is only a cosmetic difference.
- Pro Micro USB-C slot is blocked by the Start button, requiring it to be mounted upside-down
- Upside-down mounting might require extension cables for each button
Pi Pico V1
- Possible stability issues with potentiometers
- Untested asf
- Transistor too close to button? Possible melting?
ToDO
- Add firmware code
- Merge leonardo/pi pico
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3, Q4, Q5, Q6, Q7, Q8 |
| 2 | 5K1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R6 |
| 1 | BT A | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1 |
| 1 | BT B | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J2 |
| 1 | BT C | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J3 |
| 1 | BT D | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J4 |
| 1 | C_Small | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1 |
| 1 | ENC L | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J10 |
| 1 | ENC R | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J11 |
| 1 | FX L | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J5 |
| 1 | FX R | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J6 |
| 1 | HRO-TYPE-C-31-M-12 | Type-C:HRO-TYPE-C-31-M-12-HandSoldering | USB1 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_SMD | A1 |
| 1 | Start | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J7 |
The 21 most common of 25 parts.
Questions
How big is the Pi pico PCB?
It measures 124 × 44 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pi pico use?
25 parts, built around the BSS138. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Pi pico KiCad files?
From the Minnowfeather/minnowboard repository on GitHub, at the commit this page was made from: the board is pi-pico/pi-pico.kicad_pcb and its schematic pi-pico/pi-pico.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pi pico design in my own project?
Its repository states no licence, so its author keeps all rights: ask Minnowfeather before reusing the design.
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