BT DC motor board

About the BT DC motor board

BT DC motor board is an open source RP2040/RP2350 PCB design by VinnyCordeiro, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 99.1 × 73.7 mm, with 34 components from 18 distinct parts.

Its main chip is the Raspberry Pi Pico, from the RP2040/RP2350 family. Other key parts include the Black Pill STM32F401. By type, the board carries 15 connectors, 13 switches, 2 ICs, 2 diodes, 1 fuse and 1 jumper.

It belongs with the robotics & motion designs in this gallery.

From the project

BoxTurtle DC motors standalone board

IMPORTANT NOTE: this design is still untested and being modified frequently as bugs/flaws are found. Do not order PCBs yet until we say it's safe!

I designed the board to be as easy and cheap as possible; with that in mind, here are the design constraints: - All components/modules must be through hole mounted: I have professional training in electronics and the tools so SMD isn't a problem, but this isn't true for most of the hobbyists; by using through hole components the soldering complexity barrier is lowered; - All modules are to be mounted on sockets: this opens some space on the board…

BT DC motor board, from the project README — From the project README

Main components on the BT DC motor board

Raspberry Pi Pico Black Pill STM32F401

BT DC motor board bill of materials (BOM)

34 components, 18 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	Raspberry Pi Pico	Pico	U1
1	Black Pill STM32F401	STM32F401 Black Pill	U2
2	C49661 Power input	PinSocket_1x02_P2.54mm_Vertical	J1, J2
2	C49661 Power output	PinSocket_1x02_P2.54mm_Vertical	J3, J4
1	C146243 AMS1117 module	PinSocket_1x03_P2.54mm_Vertical	J5
2	C27438 DRV8837 module left	PinSocket_1x08_P2.54mm_Vertical	J6, J8
2	C27438 DRV8837 module right	PinSocket_1x08_P2.54mm_Vertical	J7, J9
1	C158012 DC motor 1	JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical	J10
1	C158012 DC motor 2	JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical	J11
1	C158012 DC motor 3	JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical	J12
1	C158012 DC motor 4	JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical	J13
1	SCREW_TERMINAL_01X02 Screw_Terminal_01x02	TerminalBlock_Phoenix_MKDS-3-2-5.08_1x02_P5.08mm_Horizontal	J14
1	C2718488 CAN	PinSocket_1x04_P2.54mm_Vertical	J15
1	C492610 Fuse_Small	XF-506P	F1
1	JUMPER_2_SMALL_OPEN Jumper_2_Small_Open	SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP2
12	CONN_01X03 Conn_01x03	JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +4
1	K3-1204D	K3-1204D	SW13
2	BAT85	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2

BT DC motor board design files

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

BT DC motor board: common questions

What microcontroller does the BT DC motor board use?

The BT DC motor board is built around the Raspberry Pi Pico, from the RP2040/RP2350 family.

How big is the BT DC motor board?

The BT DC motor board measures 99.1 × 73.7 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the BT DC motor board?

34 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 BT DC motor board design files?

From the VinnyCordeiro/BT_DC_motor_board 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 BT DC motor board design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which VinnyCordeiro chose for the repository.

Can I test firmware for the BT DC motor 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.