Hi,
I need to control LM317 digitally with DAC. I connected DAC's VCC pin to Arduino's 5 V. SDA pin to A4, SCL pin to A5. Connected A0 and gnd pins to my circuit's gnd which I fed LM317. But, when I create real circuit and test it, I take 2.7 V to 3.3 V from LM317 output. I should take 1.25 to...