I have an Arduino Duemilanove ATMega328 with a Grove luminance sensor connect to A1 on a Grove Base shield running the demo sketch. I had this program working on an UNO but I'm having problems with the DUE.
I get an 'Serial port COM 1 (port busy) error when I run the Serial monitor to view the sensor output.
Upload gives 'No device found on COM4, an error occurred while uploading the sketch.
Kind of looks like the upload worked for some reason but no output text on the serial monitor still.