MicroPython Forum (Archive)

davef wrote: ↑

Sat Apr 23, 2022 8:14 pm

https://www.google.com/search?channel=f ... adc+errors
Choose "Understanding Data Converters" - Texas Instruments and go to Figure 3 and offset error google play apk

well, thanks

Why not get zero when taking ADC readings on Raspberry Pi Pico? Even though I ground the ADC pin, the analog reading always fluctuates between 10 to 20. How can analog reading be reduced to zero?