Wire a real NEO-6M GPS module to Arduino to extract coordinates and calculate the distance to a defined point.
Build an electronic door lock system that verifies a passcode via keypad and drives a servo motor to lock and unlock.
A practical guide to wiring the 28BYJ-48 stepper motor with its ULN2003 driver and precisely controlling its direction and speed.
Build a simple calculator with a 4x4 keypad and an LCD screen that performs addition, subtraction, multiplication, and division.