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Entries tagged 'cat:DIY' (Page 1)

Tardie Clock

There are more than two ways to display the time. There are a few project ideas in my head to create clocks that don't use digits or hands but tell you the time in non-conventional ways. At some point I wanted to make a clock that uses a method that I've never seen or heard of before. I came up with one that uses colour scales for hours, minutes and seconds. This is the one i have actually built.

I chose a picture from My Little Pony: Friendship is Magic that's related to time. Fans of the show know why I called it Tardie. Three parts of the picture are laser etched in three sheets of acrylic. Each sheet has RGB LEDs on its side so each sheet can be individually lit in a different colour. An Arduino Pro Mini and a realtime clock module control the colours of the three LED strips.

So you can tell the hours by looking at the colour of the pony (hours - horse), the minutes from the colour of the mane (minutes - mane) and the seconds from the eye colour (seconds - seducing eyes). The idea was that by looking at it multiple times a day, then looking at an actual clock, you could learn to tell the time almost instantly by looking at the colours. But I didn't get around to print the colour scale for reference, yet. And I don't hape room for the thing on my desk anyway. There is a clock on my screen that doesn't take up so much space. So I can only say that it works in theory.

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Just Try It! It Will Have Been Simple Afterwards.

Again and again I encounter technical problems (software bugs, hardware defects) that seem to be nearly impossible to fix without having had a proper education in the respective field. The simple, and correct, way to getting rid of these types of problems surely is to declare them not a problem. Buy a new device, convince yourself that you don't want the feature anyway, make somebody else solve your problem and blame them if it isn't perfect or breaks again.

But in those cases where I do find the motivation to try and repair something myself, it is often easier than expected and always so in hindsight. If you have repaired something yourself before that you initially considered to be a problem that is above your capabilities, I congratulate you on this eminently gratifying feeling that more often than not seems to come with this experience. If you haven't, this sentence doesn't address you.

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USB Volume Control Knob

Volume control used to be a lot more responsive, quick and simple when the used potentiometers (analogue knobs or wheels). Just reach to the knob and the volume is at 0 or 100% almost instantly. No key combinations, no deactivated function keys, no switching tabs, no delay (!), no pressing the same botton multiple times or holding it down. I miss that.

(tba:content)

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"RGB LEDed" Shop Sign

Found this old shop sign on ebay Kleinanzeigen. Idk, I just wanted to have it. Picket it up for 10 € since it wasn't far from me. Put some RGB LEDs and an Arduino inside, used some sample RGB LED sketch, Robert is your uncle. (tbc)

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Fujitsu Cordant Pentium II Aluminium Case Mod

I always wanted an aluminium case. A friend gave me this Pentium II he finally decided to get rid of last year. Nice PC, but even nicer in black and with newer hardware in it.

I suck at spray painting and I need to get better paint next time. But if the light comes from the right angle it looks like I imagined it.

I replaced the key lock with a large screw, got rid of the drive cages, replaced the PSU and mainboard, added a graphics card with internally pluggable VGA, replaced the external VGA port with a serial port and added a small LCD panel where the drives used to be, connected internally to the unplugged VGA port. Oh, and green LED strips. I also added two 60 mm fans in the back. I didn't want to cut a whole in any of the other sides, so 60 mm was the largest possible size. Still better than none.

And yes, I actually have a use for a RS232 port.

The main reason I put in the LCD is because I can. I liked the idea ever since I saw a build with a two-line character LCD for status messages around 2004. But nowadays there is a lot more space on the front since optical drives and diskette drives have become rare. So why not make it a regular screen that can be addressed by the OS without much custom code? The idea is to have it display CPU load, temps, notifications and stuff. But I may end up using it mainly for art, animations. I'm not sure, yet.

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LED Pictures

An unremembered number of years ago I started wanting to make at least one picture like this. A picture engraved into a transparent polymer sheet, lit by LEDs from the side. The light gets scattered in the rough places of the sheet. If the LEDs are hidden, e.g. in a frame, this makes it look like the transparent picture itself is glowing. I liked the idea - probably seen it somewhere. And I knew I'm not good at making pictures - be it with paint or an engraving cutter. So I didn't do it. Usually this is the end with ideas like this of mine.

I couldn't get rid of the idea for years though. And some day I made one. It didn't look good but I liked it. I made a few more and applied more efford this time.

I saw a potential to become better at this (and still do) so I made more and more. And about 7 years later I have made hundrets of them. (Sold most of them.) Attached are a few I like best.

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80s Loudspeaker Mini-ITX Case

My old router had been case-less long enough. So I've built this mini-ITX case from an 80s speaker.

When I saw these old plastic speaker boxes in a pile of scrap on the side of the street I just had to save them. I always see things and think: Huh, I could put a computer or something in there. The same in this case. I finally found something I wanted to put this old mini-ITX machine into.

I cut away most of the inner support structure and the beams that held the back cover on, cut off part of the back cover so the PSU fits (It fits so perfectly! It's not even mounted by anything and I can really push and pull the wire as much as I want.), cut holes in what was now the new back side, fiddled a bit and wrapped the sides in matte black foil.

It was usable at that point. The back cover is held in place a bit by the mainboard hardly fitting. Then I just glued on those wooden "feet". Their main purpose is to prevent the back cover from coming off unless the wall is strained/pulled out a bit. Such a messy built, but I'm very happy with how perfectly everything sits in place now.

Added two LED strips, a power button and a switch for the light afterwards. Now I consider it done.

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