Tag: made by me

CD40106 keyboard thing

This is an instrument I built recently using the CD40106, a hex Schmitt trigger integrated circuit. It uses only two of the available six Schmitt triggers on the chip. While researching this chip (and a few others) I was a little overwhelmed by the possibilities so I decided to keep it simple (for now) and build something uncomplicated and fun but still challenging.

The case is made of 4 hardy cardboard panels fit into the outside wood blocks’ grooves. There’s hot glue, wood glue, and super glue in this thing. The white keys and buttons underneath were from toys. The bottom cardboard panel is attached with a single screw and has a 9V battery box (also from a toy). Here’s a picture of the back and bottom.

And this is what it sounds like!

Switches and knobs from left to right: on/off, LFO triangle or square wave, LFO rate, LFO mod amount, pitch, volume.

Here‘s a link with a great video about this chip and some schematics. And here’s my own schematic!

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Circuit bending the Casio PT-100

angle2

I’ve had this keyboard lying around for years (I don’t remember where or when I got it), and after my first bend I wanted to dive a little deeper.

After experimenting I read the writeup at tablehooters and found the chord modes, rhythm select, and sustain mode. I find the prospect of adding functionality that exists in the hardware but simply wasn’t built into the keyboard really exciting. I couldn’t really add more keys and the extra tone selection seemed convoluted. I also read the noystoise article which hinted at a tone select function but couldn’t find it for the life of me. I did discover a fill button which I added on the far left. [Continue reading…]

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I opened up a gifted keyboard and found an alligator clip and a potentiometer still in the case. So I started poking around and had a lot of fun! This is my first bent keyboard. I really enjoyed making this and I’m currently working on another more ambitious project.

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I’ve been the organizing force behind a choose your own adventure story with each branch or choice written by a different person. If you’re interested in contributing send me an email. It’ll be a zine and online when it’s done!

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Dichotomous thinking

I was reading a letter in the MOFGA newsletter the other day that sounded to me like some ignorant old man complaining about organic hydroponics: “There isn’t any soil in hydroponic production.” Yes, that’s the idea. And, “Big money is presently invested in ‘vegetable factories’ and ‘vertical farms’ where production is hermetically sealed in huge warehouses filled with LED lights and nutrient pumps.” It’s implied that all these things are wrong, but it’s never mentioned why they’re wrong. And then I see the letter was written by none other than Eliot Coleman who literally wrote the book on small scale organic ag. [Continue reading…]

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Notes From the Undergrads (story)

“Holy shit, guess who fucking messaged me today”
“No idea”
“Elaine. fucking. Bunter”
“That brainy bitch from psych?”
“With the gloves”
“She’d wear green gloves every day”
“Even in the summer”
“And put her hair in three pony tails”
“I know!”
“Winter gloves in the summer”
“Anyway, get this”
“What?”
“She’s getting married”
“FUCK! To who? Don’t fucking tell me it’s Jordan Stein” [Continue reading…]

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Sean’s Gloves (story)

Where the hell did his gloves go? There was an anathema of things going wrong and things going right. Earlier that day he’d been pulled over for speeding–the third time this week–on account of a wily, suspiciously hard of hearing mechanic who, upon handing our hero a large list of tasks performed or needed to be performed on his truck (brake fluid streamlining? Initial response system upgrade? Flester bolts tightened?) with an exorbitant number at the bottom, seemed a bit too confident exclaiming “She’ll really run now!” and now his speedometer was entirely unpredictable and incorrect, Sean guessing there was maybe some kind of exponential relationship between the wheels and needle with no real way to tell. [Continue reading…]

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Lego computer

I bought legos and computer parts and put them together with hot glue! It runs on 60W of power.

I started with the love for legos, small computers, and design. I used LEOcad to make the intial design and bought all the bricks through bricklink.com, which is a network of lego-selling hobbyists. I kept to my design strictly, but bought used parts from my local FreeGeek when I could. It cost a little more than 300 dollars.

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