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Development Board

Building a development board is something I have wanted to do for a long time. Like many other robot builders, when I want to just work on a concept or play around with a new sensor, I don’t want to have to build a new circuit every time. So I built a development board. It comes complete with a mouthful of features so here I go…

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Hokey Pokey Biped

Like many people, I wanted to build a humanoid robot. The first major step in building a humanoid is a 2-legged walking robot. So I built a 5 degree of freedom per leg robot. But just like many people before me realized, it is very difficult to program a pair of legs that complicated. So I simplified it down to a 3 servo per leg walker. One servo at the hip, one at the knee, and one at the ankle to shift its weight onto one leg.

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Hexapod

I got the idea for my hexapod robot from the Insectronics book by Karl Williams. It is a very simple design, using only 3 servos for walking, and 1 for the head with an ultrasound sensor mounted on it.

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Old-School Robotic Arm

When I came upon this 1980’s robotic arm, with an outdated control system, I figured I could build it a new one. The robot came equipped with 6 uni-polar stepper motors. I built a simple push button remote, utilizing a couple parallel-to-serial shift registers to save on I/O pins. The motors are driven by Darlington arrays triggered by serial-to-parallel shift registers. The microcontroller simple reads in the buttons, decided which motors to move and drives the motors accordingly.

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Digital Etch-A-Sketch

This was just a fun project that I have seen many people do, so I figured I should give it a shot. I purchased a small Etch-A-Sketch and replaced the knobs with custom ones that connect to two servo horns. Both the horizontal and vertical axis is driven by continuous rotation servos.

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Grasshopper Robot

As you can see, it’s not really a grasshopper robot, it’s just green, and looks like a bug, so now it’s called the grasshopper.

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My Boe-Bot

This is the first robot that I built. It is called a Boe-Bot. It is a very easy to build little robot kit that comes with a great introduction to the Basic Stamp

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