It is, by his admission, the cheapest possible smartwatch, coming in at about $ ... The whole thing wound up taped down to a PCB. But the usual debugger didn’t want to connect.

To solve that problem for his son, [Andrew Childs] built this custom T1D smartwatch. An Apple Watch ... The watch uses an ESP32-S3 on a custom PCB, as well as a 1.69″ TFT IPS display and ...