Hey,

Has anyone every succeeded in having both mobile/cellular internet connectivity + ESP32 in AP mode (without Internet) on Android devices?

Looks like the following make it so I can at least access the ESP32, but mobile connectivity is not working anymore:
uint8_t opt_val = 0; // don't supply ...

You are right, one of the ground cable was guilty for this, replaced it and it's ok now

Thank you

It's A 2N3907 being driven high-side: https://www.eevblog.com/forum/beginners ... e-voltage/

No one noticed this before?

Hello everyone,

I know this is super light, but before digging too much into it, I wanted to check if there's something obvious and known about ESP32 and i2c.

Got a GPIO (17) on an ESP32 wroom that is set to PWM 50% duty and here's what I see with the scope:
SDS00034.png

Now when there's an ...

Just had that very same issue, trying to investigate with a scope but either it's really random or as soon as I plug the scope it doesn't happen anymore

Edit: there we go!

Jenya,

To stabilize voltage, you may also want to add a capacitor and a resistor "just in case of":
https://github.com/esp8266/Arduino/issues/2070#issuecomment-222891420

I've done so yesterday evening to mesure a backup battery for my home automation device (to ensure it doesn't go below 12V ...