Latest posts
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Magnetic Reed Switch Detector
Detect whether a door, lid or model mechanism is open by sensing a nearby magnet.
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RFID Reader with MFRC522
Make an Arduino recognise a card or tag and discover how contactless identification works.
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Arduino Relay Controller
Use a low-voltage control signal to switch a separate load and understand isolation and safe switching.
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nRF24L01 Wireless Link
Send a small message between two Arduino boards and learn the basic idea of wireless packets.
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433 MHz Transmitter & Receiver
Create a simple one-way wireless experiment and compare the transmitter and receiver roles.
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OLED Temperature & Humidity Display
Turn sensor readings into a compact graphical display and learn how a tiny screen uses I²C.
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Dot Matrix Face Display
Animate expressions on an LED matrix and discover how rows and columns create a moving image.
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WS2812B Addressable RGB Light Strip
Control colour and animation one LED at a time and learn how digital pixels can share a data line.
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Membrane Keypad Interface
Read button combinations from a matrix keypad and build the input layer for a password or control panel.
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1.8-inch TFT Display Basics
Draw shapes and text on a colour TFT screen to build the visual layer of a future instrument or robot.