So I’ve got this lovely little M5Stack device with an ESP32 processor on it and it is supposed to support Bluetooth BLE. So I thought I’d see if it did. So fired up the example Bluetooth BLE program in the Arduino SDK and then I fired up the Bluetooth sample from the Windows-Universal-Samples and tried to get them to connect.
And they just did. Astonishing. In no time at all I was sending messages from the PC to the M5Stack, and with a bit of fiddling I managed to get data values going the other way as well. I find this amazing and wonderful. Previous attempts to get Bluetooth working like this have always been fairly horrid and fraught. With this I just hit the pair button inside the app on Windows 10, accept a security prompt and then I’m sending packets of data backwards and forwards. I’m definitely going to build something based on this,