Introduction: Pro Battery Charger/discharger
you need to get yourself these components first in order to make this project so if you feel generous please use my links so i can produce better and more videos
Supplies
tp4056 module : https://amzn.to/2Hz27HR
potentiometer : https://amzn.to/2NDe17j
buttons : https://amzn.to/2Zr1wmn
irfz44n : https://amzn.to/2LvlToT
screw terminal : https://amzn.to/2Ur3Ggh
perf board : https://amzn.to/2zA6lKR
3d printer : https://amzn.to/2ZA2mbD
p channel mosfet : https://amzn.to/2ZqZWRj
shrinking tube : https://amzn.to/2Ln0Btc
Step 1: Get Lipo Batteries
Nowdays we deal with lipo batteries on a daily basis ...especially for us electronic hobbyist we need to know certain charateristics such as battery capacity, maximum current, min/max voltage
so in this project we are going to build a charger and discharger and at the same time it calculates capacity and buzz when it's done
Step 2: Design the Housing
so i used Fusion360 to design the case and then i sliced it with Simplify3d
Then i printed it using my ender3 pro
The total print time took about 26 hours....yeah i know so long Haha
Step 3: Upload the Sketch
I made it easier for you guys
Upload the sketch to your arduino and test on a breadboard at first
This sketch wasn't easy at all for me
It took me one week to write it
So here is it now take it it's free Haha
Step 4: Test on a Breadboard
Make sure you test first on the breadboard
So if there's something wrong you can fix it quickly
Like a misplaced wire or bad connection .
Step 5: Solder Everything
Now take everything and solder it on the perf board
Make sure you always check with your multimeter for short circuit and connectivity
Always check between Gnd and Vcc
Step 6: Add LCD
Now add the lcd and it's potentiometer to control the contrast
And make sure you put some heat shrinking tubing to isolate the wires
Step 7: Solder the Rest of the Components
Now according to the schematics solder the the buzzer the p channel mosfet and the tp4056
The charging module is not mentioned in the schematics but it's easy
Connect all positive to Vcc and all negative to Gnd
Then conect all battery terminal to battery Terminal
And connect each Analog pin to the battery plus , That's it
schematics
Step 8: Combine Everything
Put everything in the case
And make sure you test them before gluing them or closing the case
Step 9: Enjoy Your Project
Now you can use your project and you can calculate battery capacity
Ps: you can change the name on the case if you want to