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
Mini Grisbot in Sketchup
It’s about three inches long by two and a half wide. Driven by two micro servos, controlled by an Atmega328 microcontroller. I think I’m about ready to put in slots and tabs and take it to the laser cutter.
Continuous rotation micro servo
Here are two Hextronik HXT900 microservos which I have modified for continuous rotation. These will provide the propulsion for the latest version of Grisbot. HXT900s are about the cheapest microservos out there. I’m planning to buy mine at Hobby King … Continue reading
Posted in Uncategorized
Tagged continuous rotation, grisbot, hxt900, micro servo, servo
Leave a comment
Modeling Molecules in Sketchup: Complete DNA Series
I have completed the video series on how to use Sketchup to make a molecular molecule of DNA. Here is the Youtube page: Modeling Molecules – Youtube
Susan Deoxyribose
Susan is the generic human model who comes up automatically when the user starts a New file in Sketchup Version 8. I happened to have copied and pasted my latest DNA model to a New file, and there she was, … Continue reading
DNA in Sketchup: closing in
From a distance it looks okay, but alas: The phosphodiester bond needs a little more twisting. Once I get that done, my DNA will look okay even close up. Onward! Excelsior! Whatever!
DNA in Sketchup: A Glimmer of Success?
Here’s the first time that I’ve been able to connect two base pairs in the DNA spiral for my modeling molecules project. My method is quite complicated and I’ve had to resort to all kinds of tricks utilizing layers to … Continue reading
Raspberry Pi from Maker Shed
Here’s the Raspberry Pi starter kit from Maker Shed: Here’s a size comparison with an Arduino (does not come with kit): Just as a note: I bought this kit about two weeks ago when it first came out at the … Continue reading
DNA modeling in Sketchup
I’ve been working a series of videos called ‘Modeling Molecules,’ the goal of which is to show how to make a ball and stick model of a strand of DNA helix in Sketchup. The above picture shows my progress so … Continue reading
Metrix Robot
This is the robot that I learned how to make at Metrix Create Space during the robotics class on September 30. It uses an ATTiny microcontroller and Tower Pro microservos. We learned how to convert the servos from fixed to … Continue reading
Posted in Uncategorized
Tagged ATTiny, Metrix, Metrix Create Space, microservo, robot, robotics
Leave a comment
Dual Sensor Mode in Processing
Here is GRIS in Processing, revised to accommodate dual sensor mode communications between the computer and robot. The square on the left flashes data, while the square on the right flashes the clock signal. Each data bit lasts two frames. … Continue reading
Posted in Uncategorized
Tagged gris, processing, robotics, sensor, serial communications
Leave a comment
Engineer Zero 