Update to my other video on building your own 18650 battery capacity tester. in this video I show the newly added I2C LCD screen and hopefully help shed some light on the tester and its abilities.
Some ideas that may help... The video (and the notes in the code) suggest the "Vin" should be measured and used as the reference voltage. I think Arduinos typically use the "Aref" pin (also "5v" pin) as the reference voltage for analog inputs. So, if you use an external 12v power adaptor, your "Vin" pin will measure around 12volts (severely skewing your "live voltage" readings). For better acuracy, I changed the code to replace every instance of "Vin" to "Aref".
If you could charge them and discharge then recharge them then I'd think it was worth it but just to discharge I don't think it is or at least not to me and also if you could create a variable load so you could have constant current and adjustable
Interesting video Alex, I'll subscribe to your channel and look forward to the next video, tell me, do you ever experiment with Attiny 45 or 85 chips? Cheers Erney
hi there, I'm not 100% sure of the question you are asking, however, all the batteries have a common ground, to reset after you have tested batteries all that you need to do is reset the arduino. hope that helps
Yes I will do very soon, I have been away with work so not had much time, but i'm back at my workshop now so can get it done and loads of other projects.
