-
Recent Posts
Archives
- May 2018
- April 2018
- February 2018
- December 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- November 2016
- July 2016
- April 2016
- March 2016
- February 2016
- December 2015
- October 2015
- September 2015
- August 2015
- June 2015
- March 2015
- February 2015
- May 2014
- March 2014
- February 2014
- January 2014
- November 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- November 2012
- October 2012
- September 2012
- August 2012
- June 2012
- May 2012
- April 2012
- March 2012
Categories
Meta
Category Archives: Electronics
Pitch to Color
Here is the color wheel used by my electronic instrument, Abella. When the music box is playing “C”, the pitch display appears yellow. Middle “C” is set at 262 Hz, high “C” at 523, and low “C” at 131 Hz, and each is displayed yellow. The remaining notes occupy a RGB-CMY color space.
Posted in Electronics, Music
2 Comments
Shift registers and Voltage display
I’ve been having great fun with the Arduino Uno microcontroller board. Here I’ve got the Arduino using a shift register to light up a 7-segment display output.
Posted in Electronics, Solar
Leave a comment
Introducing Abella
Sound and light!
http://www.youtube.com/watch?v=ccJRsY-8vOs
Here is some footage from early hardware development of “Abella,” my Arduino-powered electronic instrument. Yes, it is in a shoebox, and yes, the control knobs are popped through the cardboard. Continue reading
Posted in Electronics, Music
Leave a comment
USB car charger, 2A
The more I’ve learned about switch-mode power supplies, the more amazing it seems to me. So a voltage source across a wide range of values can be converted into another voltage, just by pulsing current though an inductor. Of course, switch-mode power supplies are even easier to set up with ICs like this one:
IC REG BUCK BOOST, 296-17764-5-ND
Posted in Electronics
Leave a comment
Cree XM-L Color
This one is truly a beauty. Here is the new RGBW high-power LED from Cree.
XLAMP XM-L COLOR LED RGBW (XMLCTW-A0-0000-00C3ABB02CT-ND)
Posted in Electronics
Leave a comment
Flea market wafer
I even got to play the rube and ended up paying $20 for a 8″ silicon IC wafer. I think this one was the most beautiful one the vendor had in stock:
Posted in Electronics
Leave a comment
Photon Battery Device (PBD)
Hey it worked! Finally put together my new solar-powered ultra-high power LED and it’s sweet! The solar cell is 1W and the LED runs at 2W, so for every two minutes of sun you get one minute of light!
Posted in Electronics, Solar
Leave a comment
