Light Detector

March 2022 - April 2022

Photo of the light detector circuit when it detects the absence of light.
Photo of the light detector circuit when it detects light.
Photo of the light detector circuit when it is off.

Project Description

The light sensor is an analog sensor that uses a a photoresistor with two FETs to turn on two different LEDs at different lighting thresholds.  This project was created as the final project for my ECE2280 class however, besides minimal circuit debugging, the design, construction, and overall execution of the circuit is entirely my idea.

Block Diagram

Below is a block diagram of my light sensor.

Block diagram of the light detector circuit.

Circuit Diagram

Below is an LTSpice circuit diagram of my light sensor.

LTSpice circuit diagram of the light detector circuit.

Circuit Demonstration

Below is a video showcasing my light sensor in action.

ECE2285 - Final Project Video - Kenneth Gordon.mp4

Final Design Report

Below is a copy of my final design report for the light sensor.

ECE2285 - Final Project FDR - Kenneth Gordon.pdf