Koushik's Digilab - Here's a fully working working Basic Rover model with 4 wheels , 2 front wheels connected to a pulley driven by a DC motor hosted on a wooden mast assembly and powered by a 3V DC battery or 2 x Solar Panels in a parallel circuit. This is a very basic 4-wheeled Rover supporting only Forward and Backward movements controlled by a 27MHz remote transmitter-receiver electronic circuit.
Functional improvisation in progress:
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Work in progress on top of this rover model to include additional features like environment sensing (Temperature, Humidity, Atmospheric Pressure, Altitude, Heat from Fire, Light Intensity, Sound from surroundings) using micro-controllers like Arduino or ESP32.