Blogroll
-
Recent Posts
Archives
- July 2025
- March 2025
- February 2025
- January 2025
- December 2024
- July 2023
- March 2023
- February 2023
- November 2022
- September 2022
- August 2022
- April 2021
- July 2018
- June 2018
- May 2018
- December 2017
- September 2017
- August 2017
- February 2017
- June 2016
- May 2015
- April 2015
- March 2015
- December 2014
- October 2014
- September 2014
- June 2014
- May 2014
- April 2014
- March 2014
- February 2014
- January 2014
- December 2013
- November 2013
- October 2013
- September 2013
- August 2013
- July 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- January 2013
- December 2012
- November 2012
- October 2012
- August 2012
- July 2012
- June 2012
- May 2012
- April 2012
- March 2012
- February 2012
- January 2012
- December 2011
- November 2011
- October 2011
- September 2011
- August 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
Meta
Category Archives: Uncategorized
If I had a 3D printer (Part 2) . . .
. . . I could make stuff like this: Give up? It’s a camera cradle, for taking photos and video from an elevated angle without having to buy and break out a tripod: Of course, you have to elevate it … Continue reading
Solving Logic Puzzles With Sketchup
Perhaps you’re familiar with those logic puzzles where five people live next to each other and have different traits, and you’re given seemingly unrelated clues and asked to figure who has what. You know, logic puzzles like this one: Well, … Continue reading
Blink proximity detection
This detector works by flashing an LED and comparing photocell readings with LED off and on to subtract ambient light and determine if there is an object in front of the robot which the LED light is reflecting from. Since … Continue reading
If I had a 3D printer . . . .
. . . I’d print me some of these: Reason: I go for walks with my MP3 player, and when the battery dies midway, I have to swap out a new battery. But carrying a battery in a pocket is … Continue reading
The Computer Inside You
When I was a kid back in the 1960s, I mentioned to some other kids on the school bus that I had read a science-speculation article about being able to integrate computers with the human brain. I thought it was … Continue reading
Schematic Diagrams in Sketchup
Paint and Sketchup are the only drawing programs that I know how to use. Paint has become miserable with Windows 7, so that it is almost impossible to draw a straight line, let alone a schematic diagram. So I thought … Continue reading
RGB display for timer
Today I spent some time thinking about possible simple products that I could market while I continue to work on my robot. One thought that came to mind was a color-coded illuminated egg timer. It would have an RGB LED … Continue reading
VU Meter Blues
This microphone break out board does not work, maybe because it needs some capacitors and resistors. So next I’ll try the one that Sparkfun is offering. BTW, I guess someone was in a hurry when they packed the box at … Continue reading
Flicker Object Detection
Can a small robot detect objects by flicking a light on and off? If so, then all I need to do in order to add object detection capability is add a small lamp to my robot at a cost of … Continue reading
Engineer Zero 