| 2 min
| 296 words
I rediscovered the xkcd up goer five text editor, which lets you type using only the 1000 most common english words. So here’s my attempt at writing a description of something:
Not Real Numbers We know how to do many number problems. Number problems with adding are easy. Adding the same number over and over is also easy. If you take a number and add it many times, the same number of times as that number, you get a box number.
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| 10 min
| 2107 words
I’m building a PiFinder! It uses a camera to take pictures of the sky, connected to a raspberry pi which uses a database of stars to tell you where in the sky your telescope is pointing. But a PiFinder is $550 new. A stock pifinder uses the newest and most expensive options for pis and cameras, and when I looked at the parts list, I thought: I can build something similar for a fifth of the price!
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| 3 min
| 581 words
I have a 1/2" diameter hole. I want to put a pipe inside the hole. What size PVC pipe fits into a 1/2" hole?
Did you guess 1/2" pipe? WRONG. “1/2 inch pipe” isn’t half an inch big on the outside. It’s closer to 7/8". You might think “ah so the 1/2” refers to the inner diameter". Wrong. The inner diameter of 1/2" PVC pipe is legally required to be 0.
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| 10 min
| 2007 words
So I’ve been working on trying to make a little Arduino powered synthesizer recently! Turns out it’s hard and sound is complicated and now I’m cursed with knowledge. The only way to get rid of curses is to dilute them, so here’s everything I’ve learned about how to make sound on an Arduino.
Speakers A speaker takes some electricity and moves a little flat thing either outwards or inwards depending on the voltage, which pushes on air and makes sound.
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