Oct 22

Spiderweb

My 2016 Halloween project: Spiderwebnight

How was it done? Watch the video:

TimeLapse video

Was it a successful project? Well, not quite. The rope supposed to be “glow in the dark”. And it does glow. Immediately after being exposed to some strong light. But sun set way too slowly :( I tried blacklight and camera flash, but they do not produce enough power for the whole spiderweb to glow. I can make a little piece glowing, but that’s no fun. But I like how it turns pink in the flash light. And it looks cool enough even without glowing.

Dec 20

What if rotary encoder does not click

I have got a function generator and power supply for $30 total.

The generator works great, but power supply was kind of weird. It was only adjustable when I did it really, really slowly. Once I tried to go faster, it was jumping to 1 then back to 0 then to 1 then back to 0. Yes, it was usable in general, but for a impatient guy like me it was a torture.

So I took it apart. There was a rotary encoder that did not click. It was just rotating smoothly like a potentiometer. This is clearly not what rotary encoder supposed to do. I decided, that I will likely not be able to repair it because some tiny part is likely broken, so I should buy a new one on ebay. But I decided to check it out first, so I opened it. This is the top part.

encoder_top

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