@Cognitive5525 said in AIN4-20mA Unit to Arduino Nano Every:

@spectrad have you tried with the M5Stack example here?

No as I am not using an M5Stack, I am trying to use an Arduino Nano Every.

@robski I assumed as it was I2C then anything that had an I2C port should work as it's a standard protocol, but I could be wrong as well.

I am trying to talk to the module using a Nano Every using the standard wire example, I get no output at all. If I use a sniffing sketch, it detects the device on 0x55 so it is visible on the bus.

#include <Wire.h>

void setup() {
  Wire.begin(8);        // join i2c bus (address optional for master)
  Serial.begin(9600);  // start serial for output
}

void loop() {
  Wire.requestFrom(0x55, 8);    // request 8 bytes from slave device 0x55

  while (Wire.available()) { // slave may send less than requested
    char c = Wire.read(); // receive a byte as character
    Serial.print(c,DEC);         // print the character
  }

  delay(250);
}

I have a 4-20mA current source which I can measure, so I am confident I have a variable input.

I have not used I2C before, I am confident the Arduino libraries are correct, so any pointers to what it might be would be appreciated. Thanks.