Supp board

RedBigz·xt-1·pcb/supp_board/supp_board.kicad_pcb

About the Supp board

Supp board is an open source RP2040/RP2350 PCB design by RedBigz, published on GitHub. It is a 4-layer board measuring 69 × 70 mm, with 21 components from 7 distinct parts.

Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. Other key parts include the Pololu_Breakout_DRV8825. By type, the board carries 8 connectors, 6 transistors, 4 modules and 3 capacitors.

From the project

Modular CoreXY 3D Printer with a focus on repairability.

- The JST PH connectors from the D-plugs to the supp. board need to have reverse connectors!

A modular CoreXY 3D Printer with a focus on repairability.

Hi, I'm May, a 15-year-old programmer and hardware enthusiast from Australia. I have spent the past few weeks developing a custom 3D printer based on the CoreXY motion system that allows for custom component bays to be inserted on the toolhead. I made this dovetail plug (D-plug) system to mimic the concept of Framework's laptop expansion bays. I believe expansion bays largely simplify repairs performed by consumers and allows for greater…

Supp board, from the project README — From the project README

Main components on the Supp board

RaspberryPi_Pico Pololu_Breakout_DRV8825

Supp board bill of materials (BOM)

21 components, 7 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	RaspberryPi_Pico	Untitled	A1
3	Pololu_Breakout_DRV8825	Pololu_Breakout-16_15.2x20.3mm	A2, A3, A4
6	IRLZ44N	TO-220-3_Vertical	Q1, Q2, Q3, Q7, Q8, Q9
3	Screw_Terminal_01x04	TerminalBlock_MaiXu_MX126-5.0-04P_1x04_P5.00mm	J3, J4, J5
4	Conn_01x08_Socket	JST_PH_B8B-PH-K_1x08_P2.00mm_Vertical	J6, J7, J8, J9
1	Screw_Terminal_01x03	TerminalBlock_MaiXu_MX126-5.0-03P_1x03_P5.00mm	J10
3	C_Polarized	CP_Radial_D8.0mm_P3.50mm	C1, C2, C3

Supp board design files

The KiCad project lives in the RedBigz/xt-1 repository on GitHub; these links point at the commit this page was built from.

Layoutpcb/supp_board/supp_board.kicad_pcb
Schematicpcb/supp_board/supp_board.kicad_sch
BOMBOM.csv

Supp board: common questions

What microcontroller does the Supp board use?

The Supp board is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.

How big is the Supp board?

The Supp board measures 69 × 70 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Supp board?

21 components, from 7 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 Supp board design files?

From the RedBigz/xt-1 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Supp board design in my own project?

The repository has no license, so all rights stay with RedBigz. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Supp board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.