The Raspberry Pi is a great little board, but because it runs Linux, you risk corrupting the file system on the SD card if you simply switch off the power. The standard advice is to type "sudo shutdown -h now" and wait until the shutdown process has finishe...
Way back when, one of my friends in high school was a guy named Dave Wilson whose father got him into Moog-style analog electronic music synthesizers. Dave created a museum of historical synthesizers in his home in Nashua, New Hampshire. Through my high sc...
Recently a friend had me watch a talk by William Davis, a cardiologist who wrote a book called Wheat Belly . If you have an hour, here are his thoughts on wheat. If you don't have an hour, here is the gist. Humans originally consumed grains in general and w...
People have been asking for an overview of the 3D printer that I showed at Makerfaire NYC 2014 . I designed it myself, borrowing a couple of ideas from other printers. My printer builds objects from a liquid resin that solidifies under ultraviolet light. Yo...
The question I was most frequently asked when exhibiting the Tooba was about how the keyboard works. I was asked this by people who were obviously intelligent, and I have a deep understanding of it myself, so you would think there would be no problem in com...
The greater the capacitance, the smaller this net restoring force is. (You can think of a capacitor of higher capacitance as giving more room for the charges to spread out so they're not so crowded, or putting the plates closer together so that the "inertial" attraction across the gap is greater, or both.)
If you touch one plate, a teeny bit of the charge can flow into your finger, or charges can become polarized in your finger so that some of the electric restoring force is cancelled out. Either way, it increases the capacitance by relieving some of the electric back-pressure through the circuit. And that's why you don't have to complete a circuit yourself.
- M. I. T.1977 - 1981
- GenomeQuest, Inc.Software Engineer, 2014 - present
- Rue La La2013 - 2014
- GenomeQuestSoftware Engineer, 2011 - 2012
- Microsoft2008 - 2009
- Danger2007 - 2008
- Nanorex2005 - 2007
- SavaJe Technologies2002 - 2005
- Xionics Document Technologies1997 - 2001
- Polaroid Corporation1984 - 1996
- General Computer Company1983 - 1984
- Litl LLCEngineer, 2010 - 2011
Header Board Atmel SAM7-256 - SparkFun Electronics
Books; Breakout Boards; Cables. Audio; Ethernet; Hook Up; Parallel; Serial; USB. Cellular. Antennas; Eval Boards; Modules. Classes; Componen
Autodesk Acquires Instructables: What It Means for Makers
The big news this week was "Autodesk Acquires Instructables." It's taken me a few days of really thinking about this for my column. Autodesk
Bishop Cubes® 3D Puzzle: The Exercise Machine for Your Brain
Bishop Cubes is a puzzle and 3D space tiling toy. Train your brain with the shape-shifting puzzle . Slide the Cubes to create new shapes. W
Outer edges of Hurricane Sandy are bringing high winds and rains today -...
The outer reaches of Hurricane Sandy have arrived in Massachusetts, but the more damaging wind and rain is still not expected until about 10