Contrib Cal
Open-source, hackable, and judging you silently.
Contrib Cal
Open-source, hackable, and judging you silently.
A glowing, hackable GitHub calendar that transforms your coding activity into a physical light display.
3D-printed, NeoPixel-powered guilt trip:
- Turns your GitHub activity into a glowing desk monument
- Built on Raspberry Pi Zero W
- Pulls your real GitHub data
Key Features:
- Lights up with every commit—green for wins, red for shame (fully customizable)
- Runs Python and Shell based firmware
- 3D-printed enclosure
- Custom PCB from PCBWay
Perfect for developers who:
- Want to flex their streak in the physical world
- Need a blinking reminder when commits are missing
- Miss the dopamine hit of hardware hacking
- Would like to easily utilize tools like Pi-hole, TailScale, Syncthing, annd more
See your commit streak—in real life
Flex (or regret) your coding habits
Hack it with MicroPython
What It Is
Contrib Cal is a hackable GitHub contribution tracker powered by a Raspberry Pi Zero W. Visualize your coding activity with vibrant LEDs, and unlock useful features and integrations for makers, coders, and tinkerers.
3D-Printed Case and custom PCB
Customizable design, solder-free LED matrix, or pro-grade PCB
Weather Animations
LEDs display sun, rain, clouds, and show current temperature
Addons & Integrations
Tailscale: Secure remote access
Syncthing: File sync server
Pi-hole: Network-wide ad blocking
Web Interface
Control LEDs, settings, and addons from your browser
Note: All features are fully customizable in Python. Addons are optional and can be enabled/disabled in the config or web UI.
Launch Plan
Email sign up
Express interest with no commitment required
50+ signups
We'll move forward with production orders
Open-source fallback
All designs and code will be available regardless
Your interest helps gauge demand - no obligation!
Sponsored by PCBWay
Professional PCB manufacturing that brought this project to life.
Pro Quality
Fast Delivery
Global Ship
As little as 5 PCBs