Hello.
I would like to know if my ESP wroom32 dev kit is powered with USB or with an external power supply 'Battery).
Because my code will not be the same. (software only)
Is there a way to do that?
Thanks a lot

Hi. I would like to have one ESP32 reading a sensor, sending the value to the second ESP32, then second ESP32 sending acknowledge to first one. I thought it was a basic function, but I spend days to find example or a tuto. I found examples sending datas to smartphone only. I'm new to ESP and BLE, so...

Thanks a lot chegewara for your answer. I think you have to install this sketch on one esp32 and the BLE_client example (Arduino IDE) on the other one. Can you confirm that? It doesn't work for me but this work if I install BLE_notify example, very similar to your sketch, instead. I can send value f...

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