anshumanfauzdar/diy-smart-18650-tester

To test 18650 batteries with the help of WIFI based microcontroller

DIY Smart 18650 tester

Initial Idea:

I am trying to make smart 18650 tester/voltmeter so that I can quickly check my old salvaged batteries, using Arduino based microcontroller is easy as it is made for 5v input and output and I have to figure it out for ESP8266 based board, so that I can divide the voltage and then measure the voltage and capacity.

Using wifi based microcontroller gives access to smart monitoring and remote acess and more stuff like data logging!

Initial Stage - V1.0

To submit as a class project for measurement and instrumentation subject intial stage is for manual working and showing data on an OLED display and also equiped with temperature sensor (Bosch-BMP280) to clearly see the temperature curve and cutoff at particular temperature

Idea is taken from instructables (https://www.instructables.com/id/DIY-Arduino-Battery-Capacity-Tester-V10-/)

Hardware Requirements:

1. Arduino Nano

2. 0.96" OLED Display

3. MOSFET - IRLZ44

4. Resistors ( 4 x 10K , 1/4W )

5. Power Resistor ( 10R, 10W )

6. Screw Terminals

7. Prototype Board

8. 18650 Battery Holder

9. 18650 Battery

10. Hex Spacers

11. BMP280

Schematics and connection