Postby JV_Boum » Fri Mar 23, 2018 7:04 am
I got these reboot with 2 differents esp32 dev board using either Arduino or ESP32 IDF script.
If your ESP32 device work fine without BT you might have a power problem.
BT required more current.. then voltage get down below a threshold that trigger a software protection that trigger a reboot.
I received a msg 'Brownout detector was triggered' at each reboot.
I solved the problem by adding an electrolytic capacitor of 1000 micro Farads (16v) between Vin pin (5v input) and Gnd.
I also add an electrolytic capacitor of 47 micro Farads (16v) between 3v3 pin and Gnd, you can use a 100 microFarads also.
Put the capacitor respecting polarities.
????
When I used only WiFi, it runs OK but when I used BT only I got Brownout.
It is paradoxal that BT use more current then WiFi ??