May 2025
Intermediate to advanced
128 pages
6h 13m
English
Content preview from Make: Volume 93
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and dashes, you could try voice encoding. Set up
a microphone, audio amplifier, and transformer
to vary the frequency and intensity of the laser
beam, and at the receiving end, a light sensor
will feed another audio amplifier, connected with
a speaker (see Make: Volume 12, “Simple Laser
Communicator,” makezine.com/projects/simple-
laser-communicator).
I’ve seen videos that demonstrate this, but it’s
nontrivial over a significant distance. Personally
I like to keep things simple, and the simplest
approach is to use logic chips to switch a laser
beam on and off. In fact, to make it really simple,
I’m going to use just the number of pulses to
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.