I've been using ESP32s and ESP8266 for a few years now and I thought I'd give these little boards a shot, they were cheaper for Bluetooth/WiFi combo, and I don't need all the bells and whistles of a full ESP32.
I have my firmware all debugged and working, it's been stable for a few months now. All it does is read a temperature from an Inkbird Bluetooth temperature sensor and log that info into a spreadsheet online for me via WiFi.
Up until this point I had the board connected via usb cable to my PC. Well I got a new PC and wanted to save a usb port so I moved it to a usb cable with an Apple AC wall adapter (5V 500mA). The board now never powers on.
Does anyone know what's happening here? It seems to not like booting unless it has a serial connection with the PC??? It doesn't like to power on if the PC is off either even though the usb port has power still.
I thought maybe this weird usb C port doesn't like 5V. So, I got it 3.3V via a breadboard power adapter rig. Nothing...