Brainstorming My original idea was to make a rover that would be sent to unknown areas and take temperature and humidity readings, plus has a carbon monoxide detector. My pi would be connected to a screen that displays the information received. The idea was to use the Elegoo v4.0 smart robot kit as sort of a base for the following additions.  Actually, I was at first thinking of making a bird encyclopedia website but that never worked out. The original component list:  4 dc motors 4 wheels 2 plastic scraps a wood platform arduino uno  raspberry pi 4 model b+ 5 inch display screen (part of the freenove kit) servo motor arduino uno extension hat (called the robot car shield) ultrasonic sensor  camera module plastic stand IR remote various hardware pieces battery  battery pack USB C to outlet cord line tracker module black tape breadboard gpio extension board gpio wire connection  jumper wires brass standoffs carbon monoxide detector module