Post by vb on Oct 5, 2020 9:14:10 GMT -8
Hi,
I'm converting an Arduino project to RPi v4. I use several Arduino Uno v3 analog pins, and want to measure voltages in the 0-5v range. I thought I read somewhere that the range of the 4ch ADC is 0-2.048v. But I can't find that anywhere. If that's true, I may need to change the external voltage divider that I use for my current project (brings down the voltage from 0-25vdc). If this is directly a function of the 1115 chip, I can go look there. But I thought there might be some board-dependent spec (e.g. power supply voltage).
Apologies if these questions are answered in documentation somewhere. I didn't find that info online. I just ordered the Pi2Grover and 4ch ADC, and want to be ready to use them when they arrive later this week.
Thanks!
I'm converting an Arduino project to RPi v4. I use several Arduino Uno v3 analog pins, and want to measure voltages in the 0-5v range. I thought I read somewhere that the range of the 4ch ADC is 0-2.048v. But I can't find that anywhere. If that's true, I may need to change the external voltage divider that I use for my current project (brings down the voltage from 0-25vdc). If this is directly a function of the 1115 chip, I can go look there. But I thought there might be some board-dependent spec (e.g. power supply voltage).
Apologies if these questions are answered in documentation somewhere. I didn't find that info online. I just ordered the Pi2Grover and 4ch ADC, and want to be ready to use them when they arrive later this week.
Thanks!
