A 2WD vehicle is powered by two wheels while four wheels rotate. A 4WD vehicle is powered by four wheels. An AWD vehicle has both 2WD and 4WD capabilities.
pico pico motor driver 点击驱动扩展版 https://www.waveshare.net/wiki/Pico-Motor-Driver 电机
https://www.tomshardware.com/how-to/raspberry-pi-pico-robot A Raspberry Pi Pico Kitronik Motor Driver Board Robot chassis 2 x DC TT motors with wheels A caster wheel for the front 1 x 4 AA Battery pack 4 x AA Batteries 1 x Microswitch / push button Soldering equipment
https://www.youtube.com/watch?v=U4unGGNjFBg https://www.youtube.com/playlist?list=PLS8HiXWI22cyp2nkjAtVlq5PoE9LRGzGB https://letsmakeprojects.com/make-raspberry-pi-pico-robot-car-controlled-by-smartphone/