Arduino Nano Passive Buzzer: Play Real Songs with tone()
Build an Arduino Nano music player with a KY-006 passive piezo buzzer using tone(), note arrays, and timing for real songs; parts...
Arduino Uno Water Level Sensor: LCD % and Full Alarm
Build an Arduino Uno water level sensor monitor that averages readings, shows a live percentage on an I2C LCD, and triggers an...
Arduino Uno LDR: Build an Automatic Night Light
Build an Arduino Uno LDR light sensor circuit that auto-switches an LED (or relay lamp) at a calibrated threshold, with hysteresis to...
Arduino 74HC595: Drive 8 LEDs from 3 Pins
Build an Arduino 74HC595 shift register circuit to drive 8 LEDs from just 3 pins, learn shiftOut(), and expand outputs by daisy-chaining...
Arduino Uno LCD1602: Simon Memory Game with Score
Build an Arduino Uno Simon-style memory game with LEDs, buttons, buzzer tones, and an LCD1602 I2C score display using parts from ShillehTek.
Arduino Uno LED Traffic Light: Build a Sequencing Controller
Build an Arduino Uno LED traffic light controller with clean go/caution/stop functions, realistic timings, and an easy upgrade path using ShillehTek parts.
Arduino IR Receiver: Decode Remote and Toggle Loads
Build an Arduino IR receiver remote control to decode any button and toggle LEDs or a relay, a simple path to wireless...
Arduino Uno IR Line Sensors: Build a Line Follower Robot
Build an Arduino Uno line follower robot using IR line sensors and an L298N motor driver, and learn the sense-think-act loop with...
Arduino Uno 4x4 Keypad: EEPROM Door Lock Build
Build an Arduino Uno keyless door lock using a 4x4 keypad, LCD1602, EEPROM password storage, and a relay to drive a solenoid,...
Arduino Uno NEO-M8N GPS: Local Time Clock Display
Build an Arduino Uno GPS clock using the NEO-M8N and ST7789 IPS TFT to display accurate local time and date without WiFi...
Arduino G1/2 Flow Sensor: Measure L/min and Liters
Build an Arduino water flow meter with a G1/2 hall-effect sensor to measure L/min and total liters via interrupts for irrigation, monitoring,...
Arduino Nano VL53L1X: Build a Servo Radar Scanner
Build an Arduino Nano VL53L1X servo radar scanner that sweeps a 60° arc, streams angle and distance data, and triggers proximity alerts...