DAC0 is not working anymore

Hardware Arduino Due
1

Dear all,

We are working on Arduino Due Board where we are creating 2 sine wave on DAC0 and DAC1. It was working very well and sudenly DAC0 looks like it is down (V = 0 V). However when we upload the code, we see that the voltage value of DAC0 goes from 0V to max (3.7 V which is weird because it seems that the maximum value should be theorically be 2.7 V) and after the upload, no more signal.

Anyone has an idea?

Best,

Nicolas

2

To preserve your DACs, hook an 1K to 2K resistor in serie. DUE DACs are sensitive, specially DAC0, you may have burn this one. Never hook directly your DAC to a speaker.