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Hwboard bike computer

axoulc·hwboard-bike-computer·PCB/hwboard-bike-computer.kicad_pcb

Hwboard bike computer PCB layout, top view — open source STM32 board by axoulc

About the Hwboard bike computer PCB

Hwboard bike computer is an open source STM32 PCB design by axoulc, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 277 × 190 mm, with 5 components from 5 distinct parts.

Its main chip is the RASPBERRY_PI_ZERO_2_W, from the STM32 family. Other key parts include the TESEO-LIV3R, TPS61089, BQ25622ERYKR and MAX17048G+.

It belongs with the sensors, rf & radio and iot & wireless designs in this gallery.

From the project

HWBoard Bike Computer PCB: A KiCad hardware project for building a custom printed circuit board (PCB) designed for a feature-rich, open-source bike computer. Powered by Raspberry Pi Compute Module 0 (CM0).

This project is a KiCad hardware design for a custom printed circuit board (PCB) that powers a modern open-source bike computer, inspired by Pi Zero Bikecomputer.

It enables you to build a feature-rich cycling computer with GPS, sensors, and offline maps, using an STM32H743 microcontroller as the main processor and an nRF54L for Bluetooth Low Energy connectivity with a companion mobile app.

Hwboard bike computer, from the project README
From the project README

Main components on the Hwboard bike computer

TESEO-LIV3RTPS61089BQ25622ERYKRMAX17048G+RASPBERRY_PI_ZERO_2_W

Hwboard bike computer bill of materials (BOM)

5 components, 5 distinct parts.

QtyPartRefs
1
TESEO-LIV3R
U1
1
TPS61089
U2
1
BQ25622ERYKR
U3
1
MAX17048G+
U4
1
RASPBERRY_PI_ZERO_2_W
U5

Hwboard bike computer design files

The KiCad project lives in the axoulc/hwboard-bike-computer repository on GitHub; these links point at the commit this page was built from.

Hwboard bike computer: common questions

What microcontroller does the Hwboard bike computer use?

The Hwboard bike computer is built around the RASPBERRY_PI_ZERO_2_W, from the STM32 family.

How big is the Hwboard bike computer PCB?

The Hwboard bike computer measures 277 × 190 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hwboard bike computer?

5 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hwboard bike computer design files?

From the axoulc/hwboard-bike-computer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Hwboard bike computer design in my own project?

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

Can I test firmware for the Hwboard bike computer 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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