Simple Volt, Amper, Power, Capacitance meter based on STM32F030F4P6, INA219B and LCD from Nokia 1202
IDE: Code::Block, gcc + Makefile Schematic and pcb: Diptrace
Li-Ion holder: https://www.aliexpress.com/item/2016-High-Quality-DIY-18650-Battery-Case-Holder-Storage-Box-Holder-Case-For-2-X-18650/32659628222.html