Air suspenstion controller (just firmware)

Controller based on Arduino Mega2560 for controlling 4 air springs by 8 selenoids (just On/off function). Height each airbag checked by one potentiometer with arm (4 potentiometers total). 10 buttons to controll height (up/down each spring + global fixed positions High/Mid/Low). Fixed postions based on valure read from potentiometer with arm connected to airspring (example: HIGH position = max potentiometer value, etc.)
All data displayed on 2.42" oled LCD
FIRMWARE ONLY - I have designed hardware.