Analog Input from Voltage Source


#1

How do I monitor a DC or AC voltage source?


#2

You can add an Analog converter to get 3.3V max input DC voltage


#3

What exactly are you trying to do?


#4

I am trying to monitor the DC or AC voltage on a circuit for long periods of time to make sure it is consistent. Do I have to add an analog converter? The pi does not have one built in?


#5

Pretty sure the Pi doesn’t have one built in. @ats1080s @eptak can confirm.

-B


#6

You would have to have some sort of hardware to monitor the voltage and then send data to the pi though that. Hooking up anything over 3.3v to a pi will certainly fry it. This is actually something that I have been meaning to do but never put in the time to go look, if I have some time in the next few days I’ll let you know what I find if no one else chimes in.


#7

Did you get what you needed here?

-B


#8

Yes. Thank you


#9

Hello @bbaker can you please share how you did this? i too nee to monitor an AC status and a DC voltage for a remote custom USP i built for a radio tower. Its far and high. Id love to see whats its status before it fails.
thanks


#10

I ended up purchasing an analog converter to connect to the pi. I did not complete the project yet though. But that should work for you.

Thanks,

Brock


#11

Hi
You can use Arduino and an analog voltage sensor?


#12

What chip do you use. When i think right, there are many chips that can read different voltage ranges and the value of the voltage you can read via I2C or SPI.