Physicswork S on Instagram: "How to Make the Cheapest RC Car in the World | DIY Wireless Cardboard Build Caution! An additional motor driver may be required according to specification of TX and RX if motor driver not inbuilt. Discover the ultimate budget-friendly RC car build using cardboard, basic motors, and a 27MHz transmitter-receiver module. No soldering, no fancy tools—just pure DIY genius. Learn how to wire the receiver, power both modules, and control your car wirelessly with the simples