Sunday, 27 April 2014

How to measure -15V to 0V using a microcontroller ADC?


How can I measure -15V using the ADC of an AVR microcontroller?



I would like to scale my signal so that -15V signal voltage equals 0V at the input to the ADC and 0V signal voltage equals 5V at the input to the ADC. Vref and Vcc are 5V.




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