November 2023
Intermediate to advanced
128 pages
6h 37m
English
Content preview from Make: Volume 87
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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.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.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.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.
Find coins and other treasure with a DIY
metal detector circuit
Written by Fredrik Jansson with Charles Platt
Charles Platt, Adobe Stock-Eyematrix
Change
Sensor
C7
100µF
Oscillator
O1
Oscillator
O2
C1
470pF
C2
470pF
R1
100
R2
100
R3
4.7K
Inductor
22µH
Headphone
jack
Sensing
coil
C3
470pF
C4
470pF
C5
max
200pF
C6
100nF
4070B
9VDC
X1
X3
X2
A
94 makezine.com
People don’t carry change in their pockets
anymore. Or do they?
With the Change Sensor, you can find out. This
ultra-simple circuit will also search for hidden
treasure — or your house keys, if you drop them
in some tall grass. In fact, any metallic object
that conducts electricity may reveal itself to
you, for this is a basic metal ...
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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.
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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.