Arduino diy battery tester

WARNING: pin 4 and 8 on the schematic are swapped.
This is the correct schematic:

In this video we'll see how to make a battery tester using an Arduino and some other components.
Firmware download page:
Versione italiana:
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#arduino #tutorial #projects #tester #display #diy #code #firmware

[markking]

Hi there, I checked the page in the description and cannot see the modification to allow this to work with 9V battery. Can you help?

[snoopnogg]

hi is this applicable for 2pcs AA NI-MH battery? The discharge voltage limit can be set? and is there a tutorial on how to make it?

[bruceknipe]

Thanks, but LM358 Pin 4 should be GND and 8 Vdd?

[Hamsterwire]

Thank you for the tutorial. May i know how to modify for 9v batteries?

[krut]

Is it normal that during idle operation it shows 0.47v?

[tancrystelp.]

Can I use Arduino uno in this project?

[GWorxOz]

Sane people do not try to narrate over music, outta here.