Metro ESP32-S2 is so close to release! Tester time…

A Raspberry Pi with PiTFT makes for a perfect ESP32 tester/programmer, we just have it run esptool and program in a self-test sketch to the ESP32, then read the output from over the USB serial connection.

The self test checks all the pins are connected properly – not floating, not shorted – as well as the power supply voltages and battery charger functionality. Then once it passes test we program in CircuitPython 6! – video.