Monthly Archives: January 2010

Ohms law

I bought Make: electronics ebook from the app store yesterday and haven’t been able to put it down. Ever wonder why you have to put a resistor on your LED? or WTF a resistor actually does? This book answers all those “But why?” questions. The first of the basics this book covers is resistance. A … Continue reading »

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Arduino Motor Control With L293D

I’ve done a lot of digging regarding Arduino motor control without the 20$ motor shield. I’ve come up with a lot. It might seem like a lot of work at first but is really not all that complex.  You’ll need some capacitors 470uF and .1uF, motors and a motor driver like the L293D. I use … Continue reading »

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Chicken Coop Door Code

I’ve been writing the code for my arduino controlled chicken coop door. This is what I have so far: // Troy Watson Arduino Powered Chicken Coop Door // Waits for the sun to come up, turns a servo to open a drawbridge then waits and closes the bridge. #include <Servo.h> Servo servo0;  // create servo … Continue reading »

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CyberClean® — “Just Press and Pull!”

I got a free sample of CyberClean® at CES on saturday and must say its pretty cool stuff. It’s somewhere between lysol and flubber but definitely cleans the gunk out of the dark, nasty orifices of your gadgets.  The guy demoing the stuff grabs my iPhone and rams it in the back hatch with this … Continue reading »

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