I’m developing a simple project with a Lora32 (V2), but I’m identifying a 0.3V drop on both Vext pins.
I’m using the Vext pins to power two CSG-1 magnetic sensors with an external pull up (10k resistors for each). I connected the sensor’s positive terminal to the Vext output, and it’s output is connected to pins 12 (SENSOR_ESQ) and 27 (SENSOR_DIR).
I also have a switch (represented by the CONTROLE variable) that is connected to the ESP’s internal pull up, and it’s working as expected: 3.3V on a OFF state for the switch, and 0V from a ON state. If the switch is OFF, there’ll be a voltage drop from 3.3V to 3.0V on the Vext pins.
This is the program’s code:
#define SENSOR_ESQ 12
#define SENSOR_DIR 27
#define CONTROLE 21
//#define ENTRADA 18
void setup() {
Serial.begin(115200);
// put your setup code here, to run once
pinMode(CONTROLE, INPUT_PULLUP);
pinMode(SENSOR_ESQ, INPUT);
pinMode(SENSOR_DIR, INPUT);
//pinMode(ENTRADA, INPUT);
digitalWrite(3, HIGH);
digitalWrite(4, HIGH);
Serial.println("Working");
}
void loop() {
// put your main code here, to run repeatedly:
delay(1000);
Serial.printf("CONTROLE = %d, ", digitalRead(CONTROLE));
Serial.printf("SENSOR_ESQ = (Analog: %.3fV, Digital: %d), ", 3.3*((float)analogRead(SENSOR_ESQ))/4095, digitalRead(SENSOR_ESQ));
Serial.printf("SENSOR_DIR = (Analog: %.3fV, Digital: %d)\n", 3.3*((float)analogRead(SENSOR_DIR))/4095, digitalRead(SENSOR_DIR));
}