GitHub

Majd-Bagazi/Basic-Motion-Sensor-Setup-Motion-Alarm-with-Buzzer-and-LED

Basic motion sensing setup using Arduino, PIR sensor, LEDs, and push button for interaction & Motion-triggered alarm system with Arduino, PIR sensor, piezo buzzer, and LED alert. // first pic This ...
GitHub

Designed an obstacle detection system using HC-SR04 sensor + Arduino, with buzzer/LED alerts for objects <10 cm. Tested performance in real-world scenarios, optimizing signal ...

There was an error while loading. Please reload this page. // Clear the trigPin digitalWrite(trigPin, LOW); delayMicroseconds(2); // Set the trigPin HIGH for 10 ...
EDN

Arduino Self Timer

“Arduino Self-Timer” project presented here is a low-component count 60 seconds countdown timer. It can be powered from a 9V compact battery or suitable Arduino AC mains adaptor. Working of the ...
Hackaday

Using A 555 Timer And ADC As A Random Seed

Most toolchains for embedded system include support for random number generation. But if you’ve read the manual you’ll know that this is really just pseudo random number generation (PRNG). When ...