Monthly Archives: April 2017

Getting Your Cheap Chinese USB Foot Pedal Doing Useful Things on Linux

UPDATE 2021-04-18: There’s now a tool for reprogramming several models of these footswitches, so consider this just a fallback for if yours isn’t supported. Well, I have a Chinese USB foot pedal that I picked up on eBay for $11 … Continue reading

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Home-made tamper-evident security seals for kids and adults alike

Suppose you need to keep siblings, roommates, children, or even friends with wandering hands out of something, but you can’t use a lock. Maybe you’re worried they’ll find the key, maybe you need something that has no metallic parts, or … Continue reading

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How To Extend A JavaScript API Based On Promises/A+

I was writing a little unsigned “dump my tabs”  WebExtension for my Firefox Developer Edition when I realized that, outside the jQuery world, I’d only ever used old-style callbacks before. “No biggie”, I thought. It shouldn’t be too hard to … Continue reading

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A couple of simple proofs, made easier to grasp

I’ve always felt a certain undercurrent of awe at how elegant and beautiful the idea of a mathematical proof is. Don’t get me wrong, I’m not a math geek, but I can’t help but admire the beauty of the proving … Continue reading

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