[Jason] has a Sonos home sound system, with a bunch of speakers connected via WiFi. [Jason] also has a universal remote designed and produced in a universe where WiFi doesn’t exist. The Sonos can not be managed via infrared. There’s an obvious problem here, but luckily tiny Linux computers with WiFi cost $10, and IR receivers cost $2. The result is an IR to WiFi bridge to control all those ‘smart’ home audio solutions.
The only thing [Jason] needed to control his Sonos from a universal remote is an IR receiver and a Raspberry Pi Zero W. The circuit is simple – just connect the power and ground of the IR receiver to the Pi, and plug the third pin of the receiver into a GPIO pin. The new, fancy official Raspberry Pi Zero enclosure is perfect for this build, allowing a little IR-transparent piece of epoxy poking out of a hole designed for the Pi camera.
For the software, [Jason] counted on Node JS, and LIRC, a piece of software that decodes IR signals. With the GPIO pin defined, [Jason] set up the driver and used the Sonos HTTP API to send commands to his audio unit. There’s a lot of futzing about with text files for this build, but the results speak for themselves: [Jason] can now use a universal remote with everything in his home stereo now.