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Author Archives: engineerzero
PC to Arduino to LED Control, Source Code
Due to popular demand, here is the source code for my blog entry, “PC to Arduino to LED Control.” First the Processing Source code: // ButtonProc // Make a button on the screen that can be clicked // and cause an LED to turn on and off in synch on // the Arduino. Used in conjunction with ButtonArd. // import processing.serial.*; Serial myPort; // Create object from Serial class int val; // … Continue reading
Robot assembly order is important
When I attempted to assemble the first laser-cut casing for grisbot, it was a learning experience. In particular I learned that design has to accommodate the assembly process. So that’s what I’m trying to anticipate with minigris. For example, in … Continue reading
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Tagged assembly process, design process, laser cut, minigris, robot, sketchup
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Mini Grisbot with tabs and slots
Here’s an expanded view of mini grisbot. I tried to learn from previous experience and incorporate design changes accordingly. Indeed, this design is probably going to change as well. Just so we’re clear, minigris is a very small robot:
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
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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
Engineer Zero 