Gas gauge calibration unit

The hardware has checked out. I added a 6 pin programming connector to load code. I was thinking of doing that off board, but the connector will save time of swapping in chips.

I have the read sensor and convert to PWM going, to test reading a sender. I am using a precision pot and looking at the PWM with scope. The PWM frequency is about 250Hz, the duty cycle varies with resistance change.

I made a short video: [ame="https://www.youtube.com/watch?v=-bPTAOcXXLg"]ADC2PWM - YouTube[/ame]