DIY Arduino Load Bank Lipo Storage/Discharger Station

Sometimes you charge your lipos but didn't flew, so you need storage the lipos.
I found in the flite test website one simple project, so my project basically its a remix.

My changes:

Added a SSD relay;

More Load resistor;

Cooler fan;

XT60 and balance connectors;

Small change in the code for better storage voltage value.

Step 1: Material

Material:
1x Arduino Uno R3

https://s.click.aliexpress.com/e/_ANNRYz

1x SSD Relay DC-DC(Im using a 100A version)

https://s.click.aliexpress.com/e/_AK1d3F

4x High Power Load Resistor(Im using 3R 100W)

https://s.click.aliexpress.com/e/_A3NtPj

1x - 10k resistor

https://s.click.aliexpress.com/e/_AduEuD

6x - 220ohm

https://s.click.aliexpress.com/e/_ADnadL

1x - 4S Lipo Balance Conector

https://s.click.aliexpress.com/e/_AWLwqN

1x - Cooler Fan

https://s.click.aliexpress.com/e/_AS9kwz

1x - XT60 https://s.click.aliexpress.com/e/_ALT7Sp

5mm Leds

https://s.click.aliexpress.com/e/_AYrDep

Jumpers for arduino

https://s.click.aliexpress.com/e/_APxXUH

Solder Station

https://s.click.aliexpress.com/e/_AlLy1x

Drill Machine

https://s.click.aliexpress.com/e/_9JEMIz

Solder

https://s.click.aliexpress.com/e/_AAyZ3j

Cutting Pliers

https://s.click.aliexpress.com/e/_9yvDHR

Aluminium dissipator for load resistors

https://s.click.aliexpress.com/e/_9i1yCZ

Step 2: Circuit Diagram

Step 3: Building

Position all components in your own box.

Put the load resistors into the dissipator.

Wiring the leds and resistors to arduino.

Solder the 10K resistor to balance connector.

Wiring all wires from balance connector to arduino.

Step 4: Arduino Code

Step 5: Video

Thanks for watching.

Any question, please comment.

Step 6: Original Project From Flite Test

Project - https://www.flitetest.com/articles/arduino-based-diy-lipo-storage-discharger

Comments

[KatManDEW]

Can this be made to work with 6S?

[bluejets]

Changed to include comments and added a switch to change between a target voltage of 11.1v (storage level) and 10.0v (discharge level)
Diagram as shown has the fan running the whole time the battery is plugged in.
Changed the wiring to suit(stepdown unit connects to green wire instead of the red) and did away with the stepdown unit as I will use max 3 cells.
Also changed wiring to accommodate a slightly different V/A meter which has only two wires for the current .
Thin Blk to negative, thin Red and Yellow together on input positive terminal.

[bluejets]

Badly written code (has no comments)

[MrOflam]

So to use this for a 2s, all I would need to change as far as code, is the "target voltage"?