I installed esptools on a linux machine and erased the ESP32 flash, no problem. I wonder what why it didn't work under windows.

I flashed an esp32 with micropython then found I needed to code in C++. I figured that micropython was taking up space uselessly and when I tried to remove it with esptool erase_flash I got "Device is busy" from the Windows Thonny IDE. It won't let me use the COM port to stop it the running sketch. ...

I'm having difficulty reading MQ136 and MQ138 sensors with a ESP32 devkit v1. Debugging, my circuit correctly reads voltages applied to where the sensor Aout signals enter, and the sensors when breadboarded in isolation and stimulated with test gases (butane, acetone and smoke) respond with reasonab...