Represent a 3×3 game board on an LCD, read moves from a keypad, reject occupied cells, and check rows, columns, and diagonals.
Before reaching for an I2C sensor like the MAX30100, the classic analog Pulse Sensor is a simpler, cheaper starting point for reading heart rate — a…
Our earlier LM35 article covered the sensor's basics with readings printed to the Serial Monitor; this project shows the same temperature reading…
Our earlier ultrasonic sensor article covered the HC-SR04's wiring and distance-calculation math with results printed to the Serial Monitor; this project…