I haven't been following this thread too closely. When you say AC measuring output, do you mean to say that you're using an analog-to-digital converter (ADC) that you then read into your microcontroller?So this is an interesting read this morning. I may refer back and forth to this for some investigations, thank you.
Would you recommend me increasing the 2M resistance or the changing the 10k resistance to increase the gain of my opamp and also, do you think that 00.8v on the AC measuring shows an oscillating output?