Pi Zero Bikecomputer

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

https://github.com/hishizuka/pizero_bikecomputer

News

• 2021/4/18 Please reinstall pyqtgraph when using python3-pyqt5 in Raspberry Pi OS (skip check if using).
• 2021/4/3 Please reinstall openant and pyqtgraph because both libraries are re-forked.

$ sudo pip3 uninstall pyqtgraph
$ sudo pip3 install git+https://github.com/hishizuka/pyqtgraph.git
$ sudo pip3 uninstall openant
$ sudo pip3 install git+https://github.com/hishizuka/openant.git

Table of Contents

• Abstract
• Features
• Specs
• Comparison with other bike computers
• Hardware Installation
• Software Installation
• Q&A
• License
• Author

Abstract

Pi Zero Bikecomputer is a GPS and ANT+ bike computer based on Raspberry Pi Zero(W, WH). This is the first DIY project in the world integrated with necesarry hardwares and softwares for modern bike computer. It measures and records position(GPS), ANT+ sensor(speed/cadence/power) and I2C sensor(pressure/temperature/accelerometer, etc). It also displays these values, even maps and courses in real-time. In addition, it write out log into .fit format file.

In this project, Pi Zero Bikecomputer got basic functions needed for bike computers. Next target is to add new functions which existing products do not have!

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

Here is detail articles in Japanese.

• I tried to make a bikecomputer, the result was pretty good
• Let's make a bikecomputer with Raspberry Pi Zero (W, WH)

Daily update at twitter (@pi0bikecomputer), and my cycling activity at STRAVA.

Features

• 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
    • PyQt5 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, some Linux, macOS and Windows.

• Good balance between battery life and performance

Specs

Some functions depend on your parts.

General

Logging

Sensors

USB dongle is required if using ANT+ sensors.

Positioning

• Map with Toner Map
  • Very useful with 2 colors displays (black and white).
  • 
• Map with custimized Mapbox
  • Use 8 colors suitable for MIP Reflective color LCD.
  • 
• Course profile
  • 

GUI

• Performance graph
  • 
• Language localization（Japanese)
  • 

Experimental functions

ANT+ multiscan

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

Comparison with other bike computers

• 200km ride with Garmin Edge 830 and Pizero Bikecomputer (strava activity)

• 

Hardware Installation

See hardware_installation.md.

Software Installation

See software_installation.md.

Q&A

License

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

Author

hishizuka (@pi0bikecomputer at twitter, pizero bikecomputer at STRAVA)