Arduino Ultrasonic Distance Meter with HC-SR04
Want your Arduino to sense the world without touching it? The HC-SR04 ultrasonic sensor measures distances from about 2 cm to 400 cm using sound —…
Arduino
Beginner-friendly Arduino Uno projects, from blinking your first LED to reading sensors.
Reading a Pushbutton: Digital Input Basics
Blinking an LED is output. The other half of every interactive project is input — and the humble pushbutton is where input begins. In…
5 min
Blink Your First LED with Arduino Uno
Every electronics journey starts the same way: with a single blinking LED. It is the “Hello, World” of hardware, and it teaches you more…
5 min