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Month: October 2014

Making the Raspberry Pi Talk 5v

Coming from the Arduino world, most everything I do is 5v logic. It’s been a switch for me now that I’m integrating my Raspberry Pi’s into my Arduino solutions (they really are complementary). We have been following a great guy

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Printing with the Arduino

http://blog.sunyday.net/ So you built this cool Arduino based test gear that does quality control tests on a piece of hardware. It’s time to ship to the customer, and you need to send them a sheet of paper with the test

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A Calibrated Solid State Radiation Detector

I’ve been playing with radiation detectors. The common solution is a Geiger – Müller tube, but those solutions tend to be expensive, and contain high voltage connections. PIN Diodes can be used, and are very inexpensive, but are uncalibrated. A

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Fingerprint Scanning with the Arduino

A secure way to enable access to projects is through the use of fingerprint scanning. This tutorial uses the 5v TTL unit from Sparkfun. The scanner does not come with a cable, so make sure you also order the JST

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