Author Archives: gregorykimball

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.

DSC02514 Continue reading

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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.

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Cars.com Data Miner

Need to organize data from the web? .NET framework has you covered.

page1 tab   page2 tab Continue reading

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Mustang for Sale

The end of an era!  My 1991 Ford Mustang just sold.

1991mustang listing Continue reading

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Heater Core Bypass

It turned out that there were only two MUST-DO items:  pass a smog check and bypass the heater core.

20140128_170251 Continue reading

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So many cars!

Well, this time I decided to do some data mining on Cars.com to help me figure out what is going on with new and used cars in the area.  A little html parsing magic later, I was able to survey all of the new and used cars available in my target class: midsize sedans.

global data Continue reading

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Samurai II

I’ve been working on resurrecting my original Samurai game, except using some respectable 3D graphics, better user input and more realistic physics.  Samurai II is in the works.

samurai2 Continue reading

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Samurai!

The game was a project for me in 2004 using some very poor graphics library in C++ but despite its technical shortcomings… IT WAS AMAZING!!!

samurai1_arena Continue reading

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“Breaking Bad” Blue Crystals

This year I’ve been pretty enthusiastic about the most famous Caltech chemist with a TV show – Dr. Walter White.

Dr. White has been a role model and inspiration for me, so much that I decided to dress as his likeness for Halloween this year.  The costume is a simple one, because Dr. White usually wears unassuming attire, but there were two parts that I needed.  The first was a black “Pork Pie” hat and the second was some homegrown blue crystals.

As a Caltech chemist, I knew that I could make some blue crystals, but I suspected that it might take a few tries.  I decided to grow some blue sucrose crystals, “rock candy,” and of course I wanted the best grain size I could make.

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Basic recipe:

  1. Dissolve 1-2 cups of pure cane sugar into boiling water using a small pot.  It will take less than 1 cup of water.  Add food coloring as desired.
  2. Stir continuously as the boiling water evaporates, and as soon as crystals start to readily form on the sides, turn down the heat.
  3. Wait for a while and turn down the heat again
  4. Wait for a while and turn down the heat again.
  5. Wait for a while and turn down the heat again.
  6. Turn the heat off and cover the pot with aluminum foil to provide insulation.  Wait 12 hours for the pot to reach room temperature and then put the pot in the refridgerator.  Wait 12 more hours.
  7. Extract your crystals!

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Introducing Abella

Sound and light!

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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

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