It wound up costing $25 to create a wireless board with no custom PCB required. Each half has its own microcontroller, and the whole thing connects via Bluetooth. While we don’t mind making a ...

[Gman] also designed a custom PCB that’s handling USB-C power delivery, charging the handheld’s 4250 mAh battery, and providing digital audio over I2S. It’s a fantastically professional ...