I built this specifically for a little nook between the kitchen and the dining room, with a shelf height designed specifically to fit unopened tubes of Glenfiddich. (They don’t really fit anywhere else in the kitchen.) I still plan to…
OK, so it kind of made me feel like I was in high school woodshop, but my brother-in-law really needed a loaded spice rack for his wedding. I built this one to fit bottles from Penzey’s (well worth a visit…
Download links and listings of the words covered by each set are listed below. Primary words are the words specifically taught (underlined) in the lesson. Secondary words may also be taught, but the student will likely learn them over time…
I suppose this doesn’t *need* the ATMega, but they’re only a few bucks, so what the hey. This uses an old GI SP0256-AL2 speech synthesizer IC containing all 59 English phenomes. It sounds very computer-like (even though the original documentation…
An even tinier 4-amp dual stepper motor controller and driver, providing 500mA per phase for two 4-phase unipolar steppers, or 1A per phase for 1 motor when signals are combined (separate input for motor power). Four-position DIP switches assign a…
NOTE: Each picture on this page has its own scale.BlueBot is a platform for autonomous robot experimentation, engineered around a specific set of motors. It’s in itself an experiment in mixing easy-to-find components and custom components, with the end goal being a well-engineered,…
When we first moved out to NC, we lived in a small apartment with no room for a shop. I did manage to get some wood into this project, though. It was the first version of what turned out to…
A tiny I2C master controller designed to monitor and handle sensor loop and control operations. Conditioned power (+5V) is brought into this board, where it is coupled with the TWI for twelve external devices on three independent clock and data…
This is how I chose to solve the problem of making trig calculations with the PICmicro MCU. Note that this does not use the CORDIC method because I imagine that would hog too much valuable computing time. This solution probably…
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