Hello, the library dont really want to work with my esp32s, anyone?

[marius240]

my code:

#include <Wire.h>

BH1750 lightMeter(0x5C);

void setup() {
  // put your setup code here, to run once:
  Wire.begin();
  Serial.begin(115200);
  lightMeter.begin(BH1750::CONTINUOUS_HIGH_RES_MODE);
  delay(2000);

}

void loop() {
  // put your main code here, to run repeatedly:

  uint16_t lux = lightMeter.readLightLevel();
  Serial.print("Light level: ");
  Serial.println(lux);

  delay(5000);

}

The cabling:

D21 -> SDA D22 -> SCL GND & ADDR -> gnd VCC -> 3.3V

[coelner]

• The power rail is on the board the parts with the blue and red line. You need to supply power. Sometimes those power rails are splitted. Take a multimeter and measure the voltage at the green wires.
• The soldered pins with the black plastic bottom are wrong. they should have been put through up side down. Measure the voltage here too, it should be 3.3V.
  • Did you check the Board Manager in the arduino IDE for updates?

[IoTThinks]

You may need to pull up the SDA and SCL before Wire.begin(SDA, SCL); pinMode(SDA, INPUT_PULLUP); pinMode(SCL, INPUT_PULLUP);

And make sure the BH1750 is...physically connected. My board is ESP32 and works fine.

I hit the same error when my sensor looses the pin contact.