SmartCharger

Smart charger for universal Li-Ion battery pack charging

Features :

• 1 to 12S Li-Ion charging
• Storage mode charging (no discharging)
• User friendly menu
• Safety features for battery, charger ans power supply protection
• Charge current ramp up
• End of charge detection
• Web server for remote monitoring and control (using Wifi)
• FW update OTA (using Wifi)

Wiring (component pin name -> ESPio 32 pin number)

Power supply

• 5V hacked on the USB charger -> pin 5V
• 0V hacked on the USB charger -> pin GND

OLED display (Adafruit monochrome OLED 1.3" 128x64)

• CLK -> pin 22
• Data -> pin 21
• RST -> pin 27
• GND -> GND
• Vin -> 5V bus

Buttons

• Down button -> pin 13
• Enter button -> pin 14
• Up button -> pin 12
• Common pin -> GND

DPS communication

• Tx (yellow wire) -> pin 16
• Rx (black wire) -> pin 17
• GND (green wire) -> GND
• 3.3V from DPS (red) -> DO NOT CONNECT (isolate it instead)

Active Buzzer

• Signal -> pin 26
• Vdd -> 5V bus
• GND -> GND

Currently in beta version