Build a 7× Arduino UNO, Then Make the Robot 7× Bigger Too
After building a fully functional 7:1-scale Arduino UNO, UncleStem made a matching 7:1-scale version of the classic beginner turtle robot. The oversized parts mimic an UNO, L298N driver, ultrasonic sensor and jumper wires, while the internals are replaced with appropriately beefy hardware such as 12–24 V ride-on-toy motors and a pair of 300 W motor drivers.
The giant robot still behaves like the original classroom build: it pans an ultrasonic sensor, detects obstacles and drives around them.
The obvious question after building a giant Arduino is “what is it for?” The answer was not to shrink the Arduino—it was to enlarge the entire beginner robot around it.