Connect Velleman WM204 on UNO vs MICRO

Using Arduino Sensors
1

Hello
I built with success movement sensor with VM204 (MM7455 sensor) and Arduino UNO using A4, A5 analog inputs.
I transpose this montage on Arduino Micro and use sames Analog Input port A4, A5 (#9 and #10).
That doesn't work.
Is there difference in naming rules between the two arduino cards ?
Thanks for help

2

SDA and SCL are pins 2 and 3 on the Micro board.

3

Google "Arduino Uno pinout" or "Arduino Micro pinout", and click "images".
Leo..

4

MM7455 sensor works on I2C Protocol.

If you check Arduino UNO Pinout, then you will see:

  • A4 is SDA short for Data Line.
  • A5 is SCL short for Clock Line.

Now if you check Arduino Micro Pinout:

  • Pin # 2 is SDA.
  • Pin # 3 is SCL.

I hope you can now make the connections.

5

Thanks a lot
It's fine.