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Make: Technology on Your Time Volume 36
book

Make: Technology on Your Time Volume 36

by Mark Frauenfelder
October 2013
Beginner content levelBeginner
160 pages
6h 58m
English
Make: Community
Content preview from Make: Technology on Your Time Volume 36

1.2.3 Smartphone Signal Generator

By Jacob Beningo Illustrations by Julie West

A SIGNAL GENERATOR IS HANDY TO HAVE AROUND THE LAB. It’s perfect for testing inputs on a new hardware design; use it with an oscilloscope to verify the behavior of your circuit. Turn a smartphone into one for less than $15!

YOU WILL NEED:

» Stereo headphone plug, 3.5mm » Wire, 1-conductor, insulated, 28-gauge solid, 8” or custom length (3) » Insulated alligator clips, red (2) » Insulated alligator clip, black » Soldering iron with solder » Smart device with headphone jack

1. Wire the adapter.

Unscrew the cap from the 3.5mm plug. Strip ¼" of insulation off the ends of each wire. Solder one wire to the plug’s large tab first — this will be the ground. Then solder each ...

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Publisher Resources

ISBN: 9781680456257Errata Page