The sealed box essentially acts as a pressure sensor. To test the concept, a large scale is made from foamcore and four load cells which feed into an Arduino which in turn is connected to a laptop ...

The power management includes two buck converters, an LDO, and eight LED drivers, supporting up to 64 LEDs in an 8 × 8 matrix organization. It makes this system the most complete and versatile sensor ...

An LED blinks with increasing frequency as the distance decreases. An Arduino board processes the sensor data and triggers the appropriate alerts, making this a practical and accessible DIY automation ...

The system combines an ultrasonic sensor with servo motor scanning to create a 180° radar-like surveillance system with real-time visual and audio alerts. This project demonstrates embedded systems ...