Circuit Lake

The Laser Position Sensor (LPS) module is an optical sensor that measures and provides the two-dimensional coordinates of visible red laser light (630-694nm) shined onto its surface. This Freescale MC9S08JM8CLC MCU-based project developed by Joe Grand based on Roger Johnson and Chris Lentz’s 2-D Optical Position Sensor.

This Laser Range Finder (LRF) is a low-cost distance measuring instrument that uses laser technology to calculate the distance to a targeted object. It can measure up to 8 feet away but for optimal measurement the range is about 6 inches to 4 feet. The project is designed by Joe Grand.

This laser tripwire project allows you to twittering and grab an image from a webcam or execute any command in a bash script when someone crossing the tripwire. The project construction is simple, you just need to position Laser pointer and LDR in a fixed position, then bounce the laser to the LDR with a [...]

Laser Audio Transmitter is final project from instruct1.cit.cornell.edu student. In This project Jehhal Liu and Daniel Zuo try to build a device that able to transmits an audio signal using a laser beam.
They created a mono-axial transmitter/receiver setup that converts an analog audio signal, via a standard 3.5mm jack, and transmits it via a [...]