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Author Archives: krazatchu
On the Cheap: Supported Linear Rail…
Supported linear rail can be quite expensive, at over $100 per rail per meter, not including shipping. An alternative support was theorized using 3/8″ threaded rod, drilled, tapped and screwed into the rail. Today it was assembled and tested, and … Continue reading
Posted in CNC, DIY, Mechanical, Motion Control
4 Comments
SiC LED: Half the cost, same great taste…
NoMi Design’s northern lab recently received some next generation gallium-nitride on silicon carbide LEDs. These new XBD series LEDs from Cree are promising double the lumen per dollar of existing technologies. From what we gather, the reduced cost is a … Continue reading
Posted in Electronics, LEDs
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CNC Half Nuts: The Smell of Melting Plastic…
After cutting down the Y axis screw for the CNC gantry router project we had a short piece of 3/4 inch Acme leadscrew remaining that was just long enough to drive the Z-axis. Buying an ACME tap to make a … Continue reading
Posted in CNC, DIY, How to, Mechanical, Motion Control
5 Comments
CNC Gantry Router: Collecting Bits & Pieces…
Bit by bit, piece by piece we have been slowing collecting the parts for the build. We just picked up a 400lb steel table measuring in at 5×8 feet that will be the basis of the build. An acme thread … Continue reading
Posted in CNC, Mechanical, Motion Control
5 Comments
The Sound of Switchmode
If you’ve ever wondered what different switch mode power supplies would sound like if used to drive a speaker, here is an untested circuit you might try. Using a zener clamped piezoelectric transducer as a contact microphone to push/pull the … Continue reading
Posted in Electronics, Off The Wall, Sensors
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Hackaday: WindPOV project…
My WindPOV project was featured on Hackaday: http://hackaday.com/2012/03/02/wind-powered-pov-weather-station/ It displays the temperature and humidity on the wing tip by way of persistence of vision. The idea of using our Contiki enabled 802.15.4 board has been tossed around a bit, this … Continue reading
Posted in Arduino, AVR, Contiki, DIY, Electronics, LEDs, Mechanical, Sensors
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