DHT11 + I2C LCD with Arduino: Build a Temperature & Humidity Meter

Wire a DHT11 sensor and an I2C 16x2 LCD to an Arduino Uno and show live temperature and humidity on screen. Full wiring diagram, code and troubleshooting.
Arduino projects, tutorials and guides you can build with parts from Arduino Corner.

Wire a DHT11 sensor and an I2C 16x2 LCD to an Arduino Uno and show live temperature and humidity on screen. Full wiring diagram, code and troubleshooting.

A complete Arduino Uno R3 starter kit — board plus sensors, modules and components in one case — the ideal way for beginners to start.

Build a motorised paddle boat that really floats and moves — a fun STEM project about motors, gears and buoyancy.

A clean-energy STEM kit: build a fan that a solar panel spins in direct sunlight — no battery required.

A 220V PIR motion sensor has three wires, not two. Here is exactly how they connect, how to set the TIME, LUX and sensitivity dials, and why mounting height and aim matter more than any of them.

Build a real, working traffic light on a wooden stand — red, yellow and green LEDs with a countdown that teaches signal timing.

Clap on, clap off: a fun STEM kit that builds a clap-activated lamp on a wooden stand using a sound sensor.

A hands-on kit that teaches the basics of electric circuits by building a buzzer, a light and a motor fan — perfect for school students.

Switch real appliances with your Arduino using a relay module — the gateway to home automation. Safe wiring, code and a parts list inside.

Print text and live sensor values on the popular 0.96" I²C OLED with Arduino — full wiring, the SSD1306 code and a parts list.

A robot that drives itself and dodges obstacles using an ultrasonic sensor on a servo — with the core Arduino logic and a full parts list.

Drive a robot car from your phone: build a Bluetooth-controlled car with Arduino, an HC-05 module and an L298N driver. Wiring and code included.

Clap on, clap off: build a clap-activated light with Arduino and a sound sensor, switching a lamp with a relay. Full wiring and code included.

Move things to an exact angle: control SG90 and MG996R servo motors with Arduino using the Servo library, with wiring, code and power tips.

The classic robotics project: build a self-driving line-following robot with Arduino, an L298N motor driver and IR line sensors — full wiring and code inside.