How to make your own 18650 (or any lithium/li-ion) cell/battery capacity checker/tester. In this series, I design a really simple circuit and talk you through it. I walk you through every single step in both the electronics and code.
The OLED wasn't optimised when I first programmed the module. At the time, i didn't realise it wasn't optimised properly, but now I do!
This video shows how to set the OLED resolution by adapting the driver.
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