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Build a clock that keeps perfect time even through power cuts, thanks to the battery-backed DS3231 real-time clock module. Beginner~1

Measure distance with an HC-SR04 sensor and show it live on a 0.96″ OLED screen. A perfect first Arduino project.

Turn a lamp or appliance on and off over WiFi using an ESP8266 and a relay module. Your first real IoT build.

Control a servo motor wirelessly from your phone over Bluetooth using an Arduino Nano and HC-05 module.

Your first step into IoT with the ESP32: host a web page with ON/OFF buttons that control real LEDs —

Turn a NodeMCU and a DHT11 into a tiny web server: open its IP address on your phone and see

Switch four lamps or appliances from any Android phone using a free serial Bluetooth app, an HC-05 module and a

The classic first robot: it drives forward, spots obstacles with an ultrasonic sensor mounted on a servo, and steers around

A rain drop sensor on the windowsill plus a buzzer indoors — the instant the first drops fall, you know

Protect your kitchen or workshop: this MQ-2 based detector sounds a loud alarm and lights a red LED the moment