Surplus Sensor Grab Bag

ELECTRONICS: FUN & FUNDAMENTALS

Sensor Smörgåsbord

From alcohol vapor to atmospheric pressure, all-in-one sensing devices are smaller, cheaper, and easier to use than ever.

Written By Charles Platt

EASY

The mass production first of automobiles, and now of smartphones, has resulted in a surplus of inexpensive sensor modules. Devices are trickling down rapidly into the hobbyist market, with industrial surface-mount components installed on breakout boards for easy soldering. I'm in the process of researching the sensors section for my new book, Make: More Electronics, but wanted to take a break and share a few of my most interesting finds.

Magnetic Fields

CHERRY MP201701 REED SWITCH $3 : jameco.com

One of the most basic, ...

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