Proximity light & alarm.

A Raspberry Pi system with separate ultrasonic distance and LDR light sensors, plus a pushbutton input. GPIO logic controls LEDs and a passive buzzer.

InputsUltrasonic sensor · LDR · Pushbutton

OutputsLEDs · Passive buzzer

ControlRaspberry Pi GPIO · User-selected modes

TestingHardware debugging · Threshold tuning

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SYSTEM ARCHITECTURESYS / 002

Sensing the surroundings.

Separate ultrasonic, LDR light sensor, and pushbutton inputs feed a Raspberry Pi. The Raspberry Pi controls separate LED and passive buzzer outputs.

Selected projects

04 projects / hardware + code

01 / Arduino↗Smart traffic signalUltrasonic sensing · Dynamic timing 02 / Raspberry Pi↗Proximity light & alarmAmbient light · GPIO control 03 / Allen-Bradley PLC↗Automated hydrationSensors · Timing · Flow control 04 / Senior capstone↗Lab on the Go3-in-1 analyzer · 3 lb handheld