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First sawdust with my blueChick CNC
scottrharris
147 views
The two-inch squares are within 0.005 and square. The circle is out of round by a little bit more than that, so I'll have to investigate. Not bad for a first try.
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Indoor Flying
scottrharris
39 views
Indoor flying in Longmont, CO
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Microwave Reflectometer
scottrharris
54 views
Trimming coffee can antennas without a microwave network analyzer
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Furnace Squirrel Cage Blower Easy Fix
scottrharris
297 views
Somehow my furnace squirrel cage blower decided to get out of whack while I was away from home. It was an easy fix and there was no cursing! How long will my good luck last?
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Testing My Bluechick v3.0 CNC Router and Mach3
scottrharris
210 views
I bought a used bluechick 3.0 CNC router from a friend and this is my first test after calibration. Text is generated from a Mach3 built in wizard
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AM Modulation
scottrharris
351 views
A simple example of generating AM modulated RF with an AD633 analog multiplier chip. I also throw in a little theory at the end.
Royalty free music: Kevin MacLeod (incompe...
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Digital Color Organ in a Retro 70s Case
scottrharris
579 views
Digital, programmable color organ with control knobs. Dual MSGEQ7 chips and an Arduino drive 36 GE Color Effects Christmas lights. I'll be adding more modes and taking this...
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Sparkfun AVC 2011
scottrharris
783 views
A quick video compilation of footage taken by my family from the 2011 Sparkfun AVC. Check out the insane carnage in the mass start at 4:01!
Thanks to all the competitors a...
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Heathkit IM-102 NIxie Tube Multimeter
scottrharris
420 views
This 38 year old nixie tube multimeter is pretty accurate (for voltage, at least). Plus a look inside!
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555 Contest Entry - The Sleep Stopper
scottrharris
577 views
My entry in to the 555 design contest. The buzzer takes a long time to turn on in the dark, but turns off almost instantly when light hits it.
Hide it in someones bedro...
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