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Laser Pointer Audio Modulator - Laser Beam Detector ...
http://maxmcarter.com/lasrstuf/lasermodulator.html
The laser pointer audio modulator requires alignment. The alignment procedure uses the discriminator in the demodulator as a 'frequency meter'. The procedure is not difficult but should be followed carefully for best results. Figure 3 shows the …
Laser Pointer Audio Modulator - Laser Beam Detector ...
http://rageuniversity.com/PRISONESCAPE/LASER%20COMMUNICATORS/lasermodulator.pdf
Laser Pointer Audio Modulator - Laser Beam Detector/Demodulator Modulate a cheap laser pointer with voice or music. If you'd like to experiment with point-to-point (free-space, without a glass fiber) light-beam voice or other audio communications, or with music transmission (say, to a …
Laser Pointer Audio Modulator - Wiring and Mounting a ...
http://www.maxmcarter.com/lasrstuf/650laser.html
The laser is connected to and powered from the laser modulator, the module pointed at a white piece of paper about 20' (6m) away, and the lens adjusted carefully with a screwdriver for a collimated spot on the paper about the same size as the lens. The assembled module. The board is stabilized in the barrel with hot glue.
Printed Circuit Boards for Laser Pointer Audio Modulator ...
http://maxmcarter.com/lasrstuf/boards/index.html
Laser Pointer Audio Modulator - Laser Beam Detector/Demodulator. This page has etching masks which can be used to make printed circuit boards for the Laser Pointer Audio Modulator and Laser Beam Detector/Demodulator. The format is "bigfoot", a large 3" x 6" (8cm x 16cm), single-sided, standard DIP, no-holes (no drilling required), surface mount footprint - easy to make at home.
Using laser pointers for voice communications
http://www.modulatedlight.org/optical_comms/using_laser_pointers.html
A few more designs of laser pointer transmit/receive systems These links describe various circuits and techniques used to modulate a laser and detect its emissions - using both AM and FM. Max Carter's Laser Pointer audio modulator. This describes an FM-based system centered on approximately 75 kHz and is one of the better-designed, higher-performance FM-based …
Current modulator for laser driver and analog audio signal ...
https://electronics.stackexchange.com/questions/402866/current-modulator-for-laser-driver-and-analog-audio-signal-modulation
At the moment, I connected the audio output instead of the battery in a laser pointer. It works, but the laser signal is very weak and I would like to use laser diodes instead of laser pointers. The ready-built laser drivers often use TTL signals, MHz modulation or not enough current. The laser can handle currents up to 26mA.
Modulating Lasers | Laserglow
https://www.laserglow.com/content/Modulating-Lasers
An acousto-optic modulator (AOM, also sometimes called a Bragg cell), is a device which can pulse the laser or alter the transmitted power at a very high frequency. Basically, they function by sending the laser beam through a crystal which is subjected to acoustic vibrations.
Audio jack built in to laser for sound ... - Laser Pointers
https://laserpointerforums.com/threads/audio-jack-built-in-to-laser-for-sound-modulation.79388/
Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers Home. Forums. New posts Search forums. ... ah no, u can send audio through the laser and be reformed at the other end by using a photodetector. laser as a means of communication over a distance.
HOW TO: Send Audio/Your Voice Over a Beam of Light : 6 ...
https://www.instructables.com/HOW-TO-Send-AudioYour-Voice-Over-a-Beam-of-Light/
Step 1: The Parts. You will need: -A CdS Photocell. -Some battery holders with battery clips if needed (one for the audio-to-light modulator [transmitter], one for the receiver, and one for a microphone (optional)) -One microphone.
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