Greenhouse door controller box

Automatic greenhouse door opener
Goal
Opening the greenhouse door automatically when the room gets too hot. I have set it to 24 degrees C that the door opens and door gets to maximum position when there is 32 degrees C.
Used hardware
In box
Arduino Nano clone - main "brain" of the project
5110 LCD - LCD to show info
DS18B20 - temperature sensor
SRD-05VDC-SL-C - 2 relays
LEDs x 6 - for indicators
Resistors
Capacitors - 3x
Level shifter 5V->3.3V
7805LM - 12v to 5v
10A fuse and fuse pcb mounts
PCB screw terminals
On door
Car side window lifting motor and mechanism
Magnet and PS-3150 Reed Switch
Switch - for door "homing"
bolts, nuts, threaded bar
Software
I wrote code for the arduino to control the door.
Arduino checks if the home swich is pressed. When home switch is not pressed the arduino tries to close the door. When door is closed now the arduino knows the "0" place. Measuing temperature. When temp is 32C then the door opens all the way. When the temp is in bet