An open-source bike computer based on Raspberry Pi Zero (W, WH, 2 W) with GPS and ANT+.

https://github.com/hishizuka/pizero_bikecomputer

• 2026/1/30 Support for a groundbreaking dual-screen display is in progress.
  • 
• 2026/1/30 The MIP LCD methods will be fully deprecated, and a switch to a newly released DRM driver is planned.
• 2025/10/12 Supports Raspberry Pi OS Trixie. For new installations, it is highly recommended to install Trixie due to compatibility with asyncio and asynqt. The following will no longer be supported going forward:
  • Raspberry Pi OS Bookworm and earlier
  • PyQt5
• 2025/6/24 Now major packages can now be installed with a 1-line command.
  • /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/hishizuka/pizero_bikecomputer/refs/heads/master/install.sh)"

• Abstract
• Features
• Specs
• Comparison with other bike computers
• Hardware Installation
• Software Installation
• PCB Gallery (under development)
• Q&A
• License
• Author
• Link

Pi Zero Bikecomputer is a GPS and ANT+ bike computer based on Raspberry Pi Zero (W, WH, 2 W). This is the first DIY project in the world integrating the necessary hardware and software for a modern bike computer. It measures and records position (GPS), ANT+ sensors (speed / cadence / power), and I2C sensors (pressure / temperature / accelerometer, etc.). It also displays these values, maps, and courses in real time. In addition, it writes logs to .fit format files.

In this project, Pi Zero Bikecomputer has already got the basic functions needed for a bike computer. The next target is to add new functions that existing products do not have!

You will enjoy both cycling and the maker movement with Pi Zero Bikecomputer!

Here are detailed articles in Japanese. The original Japanese titles are kept below, with English translations for reference.

• サイクルコンピューターをガチで作ってみたら、割とできてしまったという話 (English: I tried to seriously build a bike computer, and it turned out surprisingly well)
• Raspberry Pi Zero (W, WH, 2 W)でサイクルコンピューターを作ってみよう (English: Let's build a bike computer with Raspberry Pi Zero (W, WH, 2 W))

Daily updates are posted on X (@pi0bikecomputer), and my riding activities are on STRAVA.

• Easy to make

  • Use modules available at famous Maker stores.
  • Assemble in Raspberry Pi ecosystems.
  • Install with basic commands such as apt-get install, pip and git command.

• Customization

  • Need only modules you want to use. Pi Zero Bikecomputer detects your modules.

• Easy to develop

  • Pi Zero Bikecomputer uses same libraries as for standard Linux.
    • Python
    • numpy
    • PyQt6, PySide6 and PyQtGraph
    • GPSd for GPS modules.
    • CircuitPython libraries for some I2C sensors.
  • So, you can run in cross-platform environments such as Raspberry Pi OS, Linux, macOS and Windows.

• Good balance between battery life and performance

Some functions depend on your parts.

USB dongle is required if using ANT+ sensors.

Strava heatmap.

RainViewer and openportguide are available worldwide.

In Japan, 気象庁降水ナウキャスト(rain) and SCW(wind) are available.

it displays three of the people around you in the order in which you caught sensors using ANT+ continuous scanning mode.

• 314km ride with GARMIN Edge Explore 2 and Pizero Bikecomputer (strava activity)

• 

See hardware_installation.md for supported displays, GPS modules, I2C sensors, buttons, batteries, and assembly examples.

See software_installation.md.

For a new Raspberry Pi OS Trixie setup, the recommended entry point is:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/hishizuka/pizero_bikecomputer/refs/heads/master/install.sh)"

For macOS or Linux development, see the manual setup steps in software_installation.md.

This repository is available under the GNU General Public License v3.0

The code shown below is ported and modified from Azumo's code under the Apache License 2.0 (third_party/apache/LICENSE.Apache2). See the NOTICE file for details.

• modules/display/mip_display_base.py
• modules/display/cython/mip_display.cpp

This project also includes code ported and modified from the Apache NuttX RTOS project under the Apache License 2.0 (third_party/apache/LICENSE.Apache2). See the NOTICE file for details.

• modules/sensor/gps/cython/cxd5610_rpi.c
• modules/sensor/gps/cython/cxd5610_rpi.h

This project also includes code adapted from swiftcontrol under the GNU General Public License v3.0. See the NOTICE file for details.

• modules/sensor/ble/zwift_click_v2.py

This project also includes code ported and modified from Bosch Sensortec GmbH's code under the BSD 3-Clause License. See the NOTICE file for details.

• BHI360_SensorAPI
  • modules/sensor/i2c/cython/bhi360_shuttle_board_3/common.c
  • modules/sensor/i2c/cython/bhi360_shuttle_board_3/common.h

This project also includes code vendored from hishizuka/crdp, which is based on the original biran0079/crdp project by Ran Bi, under the MIT License. See the NOTICE file for details.

• hishizuka/crdp
  • modules/utils/crdp.py
  • modules/utils/_crdp.pyx

hishizuka (@pi0bikecomputer on X, pizero bikecomputer on STRAVA)

Maker Faire Tokyo 2020 - Raspberry Pi Zero Cyclecomputer

HACKADAY - DEVELOPING AN OPEN SOURCE BIKE COMPUTER