This is a very simple Lithium/IOn battery tester, it discharges the battery to compute its capacity. It does constant current discharge and uses a large TFT screen (ILI9341). It is powered by a stm32F1, an atmel chip is not powerful enough to drive such a screen. The control is done through a rotary encoder.
Shopping list :
- ST32F1 aka bluepill
- MCP4725 i2c DAC
- INA219 high side current
- ILI9341 touch screen (we dont use the touch part)
- IRLZ44N power mosfet
- LM358 dual opamp
The schematics are in the schematics folder There is a 3D printable case in the enclosure folder (it's big)
