November 2023
Intermediate to advanced
128 pages
6h 37m
English
Content preview from Make: Volume 87
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Figure
H
shows how to connect either type of
adapter when using stereo or mono headphones.
The blue wire goes to negative ground in each
case, while the yellow wire carries the signal.
The yellow sensor coil shown in Figure A can
be adjusted to suit your interests. A smaller-
diameter coil will be more sensitive to small
objects such as coins. A larger coil will respond
to large objects. In Figure
I
, the large coil is
4¼" diameter, created by wrapping 10 turns of
22-gauge hookup wire around a 2-liter bottle of
soda. The smaller coil contains 17 turns, 2" in
diameter. Try them one at a time.
SEEKING A SIGNAL
After you connect your coil and attach ...
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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.