: Projects using reed switches, infrared motion detectors, or ultrasonic distance sensors.
// Light Clapper Starter const int sensorPin = 2; // Sound sensor digital output const int ledPin = 13; // Built-in LED bool ledState = false; void setup() { pinMode(sensorPin, INPUT); pinMode(ledPin, OUTPUT); } void loop() { int status = digitalRead(sensorPin); if (status == HIGH) { // If sound is detected ledState = !ledState; // Toggle LED digitalWrite(ledPin, ledState ? HIGH : LOW); delay(500); // Small delay to prevent double-triggering } } Use code with caution. Copied to clipboard Arduino and Raspberry Pi Sensor Projects for th...
: A knob that changes the color of a multi-color LED. : Projects using reed switches, infrared motion detectors,
: A door entry alarm that logs timestamps to an SD card. Copied to clipboard : A knob that changes
This project uses a sound sensor to detect a "clap" (loud noise) and toggle an LED or appliance. Hardware Needed: Arduino Uno or similar board. Sound Sensor Module (e.g., KY-038 or similar). LED (with a 220-ohm resistor). Breadboard and jumper wires. The Code:
: Projects using TFT color screens to show sensor data.
: A memory challenge using buttons and LEDs.