Buenas, soy nuevo en esto, estoy empezando a provar el nodo LoRa esp32 (V2) yno soy capaz de que la salida Vext se ponga en nivel bajo,
cuando la pongo en nivel alto me da una salida de 4,22v y en nivel bajo se queda en 3,53v
el modulo lo alimento con una bateria de 3,7v conectada a al entrada de 3,3v.
este es mi programa para probarla:
void setup(){
pinMode(Vext, OUTPUT);
}
void loop() {
digitalWrite(Vext, HIGH);
delay(2000);
digitalWrite(Vext, LOW);
delay(2000);
Your program looks fine.
I was wondering if I misplaced the probe elsewhere during the measurement?
No, medi en los dos pines Vext y median lo mismo.
Hello. I have the same problem. It’s being hard to use the Vext control. In my case, I’ve tested in two different devices (heltec esp32 LoRa V2) and I got same results. When Vext is On I get 3.3v aproximadetely. When Vext Off, I get 2.4v. I can’t measure 0v from the Vext pin.
The question is that I’m trying to use Vext for a buzzer, but it’s never tunrs off, cause always there is tension in this Vext pin.
Sorry about my english, hope someone can help me!
Thx