Motors, motor drivers, line followers, obstacle avoidance.
Build a doorknob dial that points an arrow at your current mood.
Master the world of echolocation by building a digital ruler that sees with sound!
Build a smart proximity detector that 'sees' objects using invisible infrared light.
Master the mechanics of gaming controllers by building your own 2-axis input system.
Discover the battle between magnetism and light by comparing two of the most popular 'non-contact' digital sensors.
Master the art of 'NeoPixels' to control hundreds of colorful LEDs using just a single microcontroller pin!
Unlock 3D motion tracking by measuring acceleration and rotation with high precision.
Build a rugged, industrial-grade distance meter that can survive rain, splashes, and outdoor environments.
Build the classic competition robot that steers on black tape using three digital IR modules.
Arduino pins cannot drive motors directly — learn enable, direction, and PWM speed through an L293D.
