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Hundreds of projects from beginner to advanced — schematics, code, and videos.
Project that reads the serial number in Serial Monitor when the card or keychain is approached with RC522 RFID module. Teaches the basics of SPI communication and RFID reading.
Authentication project that gives access permission with green or red LED by comparing the card ID read with the RC522 RFID module with the registered ID.
Digital voltmeter project that measures voltage in the range of 0-55V with voltage divider circuit and displays the result on I2C LCD screen. Teaches voltage divider formula and analog measurement cal
A project for one-way data transfer between two Arduinos via serial communication. It detects the button press on the transmitter side and teaches to control the LED on the receiver side.
A project that transfers data bidirectionally between two Arduinos via serial communication. Both boards both read buttons and send data and receive data and control LEDs.
Control project that lights LEDs in 4 different directions according to the X and Y axis values of the joystick module. Teaches analog joystick reading and direction detection logic.
Pan-tilt project that independently controls two servo motors in X and Y axes with joystick module. Teaches the logic of joystick-servo integration and position tracking.
Basic project that reads the key pressed from the 3x4 keypad keypad and displays it on the Serial Monitor. Teaches the use of keypad library and matrix keypad.
Project that can turn 3 LEDs on and off independently with 3x4 keypad keys and perform batch control. Teaches multiple output control with keypad.
Basic project that reads the key pressed from a 4x4 keypad keypad and displays it on the Serial Monitor. Teaches 4-column extended keypad configuration.
Security project that opens the door with servo if it is correct by entering a password with a 4x4 keypad and turns on a red LED if it is wrong. Teaches password comparison and servo-LCD-keypad integr
Programmer keyboard project with Arduino Leonardo and 4x4 keypad that writes Arduino code blocks such as if, for, digitalWrite to the computer with a single key. Teaches HID keyboard emulation.
