# tank_cooler

A tiny tank cooler.

Used components:
----------------

Arduino nano (old bootloader)
PC fan 120mm 5V
PWM D4184 MOS breakout board
USB-C connector

Connections:
------------

USB-C D+ <-> Pin4 CH430 chip
USB-C D- <-> Pin5 CH430 chip

VIN      <-> PWM board (+)
VIN      <-> USB-C V+

GND      <-> USB-C GND
GND      <-> BMP280 breakout board GND
GND      <-> PWM breakout board GND

D9       <-> PWM Pin of the breakout board

A4       <-> SCL pin of BMP280 breakout board
A5       <-> SDA pin of BMP280 breakout board

PWM board load <-> PC fan (+)
PWM board GNC  <-> PC fan (-)