Skip to content

Devices Requests Submit a project

Open software for closed hardware.

2,495

mods for 398 devices

co.build

Devices Feed About Contact

Build

Requests Submit a project API

Legal

Terms of Use Privacy Policy

co.build lists third-party projects and provides its own descriptions and setup prompts. Review instructions before running them: device changes can cause damage, data loss or security problems. Independent repair does not automatically remove statutory warranty rights, but damage caused by a modification may be excluded where law permits. Check the project, permissions and local law. Device names and logos belong to their owners; a listing does not imply their endorsement.

© 2026 Just Cobuild, Co.

Devices Requests Submit a project

Built a Fitbit Air overlay showing live heart rate on streams, by brainstormity · co.build

Built a Fitbit Air overlay showing live heart rate on streams

brainstormity@brainstormity on X · Oct 2

Fitbit44 mods on co.build

My heart rate is now open source 💀❤️

I built an STREAMING overlay that displays your LIVE HEART RATE while gaming, using a Fitbit Air.

Now I just need to play a horror game and see how high that BPM gets 😂

Open on GitHub View post on X

Code: brainstormity/heart-rate-overlay
On X: 9 likes · 1 reply
Views: 1,888