Awesome Dad Upgrades His Son’s Power Wheels Lamborghini with 12V Power and Traction Control

YouTuber CodeMakesItGo had purchased a Rastar Lamborghini Aventador LP700–4 6V, which is a BPRO (battery-powered ride on) toy similar to the Power Wheels cars that kids have been enjoying for decades. There is a 12V option available, but the 6V model that CodeMakesItGo bought was painfully slow. With his son in danger of losing drag races to the other kids in the neighborhood, he decided to set out upgrading the tiny Aventador to 12V.

Such upgrades are commonplace in the BPRO hot rodding world, but how they’re done is dependent on the original hardware. In this case, the 12V retrofit required the use of a new electric motor, a 12V 7A rechargable lead acid battery, and a robust 43A H-bridge motor driver. Those upgrades decreased the time it took to traverse 10ft from a glacial 4.45 seconds to a blistering 1.60 seconds.

But, all of that unbridled power introduced a new problem: wheel slip. The Rastar Aventador uses a one-wheel drive system, so CodeMakesItGo devised a clever traction control system that works by comparing the spin of the driven wheel to the spin of free wheel. The rotation of the wheels are monitored by optocouplers, and an ESP8266 checks their output. If wheel slippage is detected, the power output is reduced to regain traction. The result is a speedy little BPRO that CodeMakesItGo’s son can drive without fear of losing traction.