Geeetech

I just purchased ten iduino Mega R3s and the I2C interface does not seem to work. I tried five of them and none of them are communicating over I2C (which of course uses the SCL line that you are having problems with.) I have many other Chinese clone Mega R3s as well as a "real" Arduino Mega R3, and ...

I recently purchased 10 Geeetech iduino Mega R3s and am having a problem with them. They run the "blink" program fine, but they do not work with a very simple test of the I2C interface. I have several other Chinese "clone" Arduino Mega R3s as well as a "real" Arduino Mega R3, and they all run my ...