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Ina219 and LM4040
Moderators: adafruit_support_bill, adafruit

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Ina219 and LM4040

by Gummiq on Sat Jul 31, 2021 4:42 pm

Hi, everyone,
I would like to measure current in a range of 0-500mA (DC) at 3-24V,
whereby time does not matter (each measurement can take 1-2 seconds, so nothing high-frequency).
The results are floating slightly, depending on other stuff running on my Uno rev3,
and I think it might be a good idea to use the LM4040 to create a very stable Vcc.
Do you think that could help?

Best regards
Michael

Gummiq
 
Posts: 1
Joined: Sat Jul 31, 2021 4:26 pm

Re: Ina219 and LM4040

by adafruit_support_bill on Sat Jul 31, 2021 8:06 pm

Not really enough information to go on. What else might be drawing current in addition to the UNO? What code is the UNO executing?

adafruit_support_bill
 
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Please be positive and constructive with your questions and comments.