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Category Archives: Uncategorized
Converting a micro servo to continuous rotation
Say you want to build a small robot, but you soon discover that DC motors move too fast and geared DC motors are too expensive. Then you hear about servos. Servos are basically geared DC motors, and microservos seem just … Continue reading
Posted in Uncategorized
Tagged continuous rotation, conversion, micro servo, robot, robotics, servo
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Activity Report: Remote Control Machines Kit
The Thames and Kosmos Remote Control Machines Kit proved to be popular at the Big-Brained Superheroes Club this past Wednesday. The kit is a lot like LEGO and the kids quickly caught on to how the assembly diagrams work. We … Continue reading
Kits and Games for Big-Brained Superheroes
For years now I’ve been collecting kits and other stuff that I haven’t been using. So I thought, why not let Big-Brained Superheroes use it? I’m willing to donate everything but the games, and I want to hold (no pun … Continue reading
From Scratch to Arduino Test Bed
In my last blog entry, I created a new graphical interface in Scratch for transmitting data to the microcontroller on the robot. Tonight I verified that the Scratch program is able to communicate via screen flashes with the Arduino test … Continue reading
Grisbot screen interface for light track
You know, time just flies when I’m doing graphic design. I sure wish I was good at it. Anyhow, the above screen shows the graphical interface (in Scratch) for programming the robot in ‘light track’ mode. 0a: Specifies the distance … Continue reading
Grisbot (S3) follows the light
Poor Little Grisbot S3, I misprogrammed it this morning and instead of going forward it went backward — and off the table onto the floor. Despite landing upside down, it worked all right once I unbent the photocell leads. Anyhow, … Continue reading
Grisbot Model S3
This is basically a wood and glue robot, but it’s sturdy enough for running around a tabletop and that’s what counts. As you can see, it’s also quite small — not much bigger than an Arduino or a computer mouse. … Continue reading
Introducing Foambot
In my continuing quest to drive down the cost of grisbot, I’ve had to reconsider using acrylic. The material costs $3, and then on a good day the local hackerspace charges $18 to cut it. And then depending on the … Continue reading
Test vs. Reality
On the right hand side of the photo is the ‘test bed’ that I use for robot programming. It consists of an Arduino and a couple of breadboards. The support platform is ‘Getting Started with Processing’ but any book of … Continue reading
Five Things To Remember (Pun!) About Arduino EEPROM
EEPROM stands for Electronic Erasable Programmable Read Only Memory and is the place in chip memory where data can be stored in the Arduino/ATMega328 even after power down. This can be useful! The Arduino site has specifics on the EEPROM … Continue reading
