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Fun with EL-wire
Last night was the last day of 2013. So I figured I should do something new to celebrate the new year. Hence, some EL-wire fun. EL-wire, or Electroluminescent Wire, is a lot of fun to use. It looks really cool and is very flexible and easy to use. But it cannot be lighted with batteries or…
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Using an analog panel meter
I bought an analog panel meter from electrokit and wanted to test it using an Arduino.My meter (there are other kinds) reacts to current, from zero to 50 μA (0.00005 Amps). So to get it to show 100% (50 μA), I gave it 5 V through a 100 kΩ resistor. I used Ohms law to…
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DIY solder fume extractor
In an attempt to lower the amount of solder fumes that I breath into my lungs while soldering, I searched the net for cheap solutions, and found lots of great do-it-yourself examples! See for instance Kip Kay’s video. Most examples use a fan (a computer chassis fan or equivalent) and an active carbon filter. It seemed…
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Blinky ghost project
I wanted to build something cool using my new PIR-sensor. At the same time, a night light I had bought for the children stopped working. It was a IKEA light that looks like a ghost and that is meant to be used as a night light for children. I took it apart, but I couldn’t fix…
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Five volt box
I’ve often felt the need for a steady five volt output that I could use to test various components, such as LEDs, push button, rotary encoders and so on. After seeing a few examples on the internet, I decided to build my own little five volt box. I wanted to build the whole thing into…
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PIR sensor
Just got a PIR sensor. PIR, as I understand, stands for Passive Infra Red. It’s a cool little thing that detects motion, or actually changes of infrared light. Infrared, in this case, is heat. So whenever a person, or part of a person, or perhaps an animal, or part of an animal moves infront of…