When creating a peripheral for a mobile phone, an obvious path is to create a companion app with which to talk to it. But as we all know today’s app is tomorrow’s non-functional abandonware, so to give his infrared camera a long life, [Cezar Chirila] 

The hardware is conventional enough, a FLIR sensor talking to an RP2040. There’s very little in the way of supporting circuitry save for a power supply regulator, as so much that might be on a standalone project is already present in the USB host device. Running the thing is as simple as going to a landing page in a browser that supports WebUSB, and using the camera. The whole lot is 

tech

> When creating a peripheral for a mobile phone, an obvious path is to create a companion app with which to talk to it. But as we all know today’s app is tomorrow’s non-functional abandonware, so to give his infrared camera a long life, \[Cezar Chirila] [made it talk WebUSB to a browser instead](https://www.cezarchirila.com/blog/2026/10/picothermal/).
>
> The hardware is conventional enough, a FLIR sensor talking to an RP2040. There’s very little in the way of supporting circuitry save for a power supply regulator, as so much that might be on a standalone project is already present in the USB host device. Running the thing is as simple as going to a landing page in a browser that supports WebUSB, and using the camera. The whole lot is [in a GitHub repository](https://github.com/icamaster/picothermal), if you’re interested.
>
> [**...read more at hackaday.com**](https://hackaday.com/2026/10/15/a-thermal-camera-that-uses-webusb/)