AI Tool Guides
Best for
Electronics projects with sensors and motors
Works on
Hardware + Arduino IDE (all platforms)
Alternatives
micro:bit, Raspberry Pi
Watch out
Requires soldering for advanced projects; starter kits £20+
What It Does
Arduino is the world's most popular open-source electronics platform. An Arduino board (Uno, Nano, Mega, or dozens of others) is a microcontroller you program in C/C++ to read sensors, drive motors, control LEDs, and communicate with other devices. The ecosystem includes thousands of libraries, shields (add-on boards), and a community of millions. It is the backbone of most DIY robotics, IoT, and physical computing projects.
Setup in 5 Minutes
or
use the browser-based Arduino Cloud Editor.
- Connect the board via USB, select your board and port.
- Upload the "Blink" example sketch.
- If the onboard LED blinks, you are ready.
Try This
Connect a temperature sensor (DHT11, £3) and an LCD
screen to the Arduino. Write a sketch that reads the temperature every
five seconds and displays it on the screen. Add a buzzer that sounds when
the temperature exceeds a threshold. You have built a basic environmental
monitoring system.
Follow Along
Follow Along — Build a Light-Level Logger.
every 10 seconds and prints the value with a timestamp to the Serial Monitor.
- Let it run for five minutes, then copy the Serial Monitor output.
- Paste the data into a spreadsheet and plot a line chart of light level over time.
- Try covering the sensor, shining a torch at it, and moving near a window—observe how the chart responds.
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