FabLab Kamp-Lintfort

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====== Analog Keyboard Project ======


**The plan:**

  * Make a custom keyboard
  * Make WASD-Keys analog (the main part of the project)
  * All the other keys "normal"
  * Custom software on PC (extended goal)

Use mechanical Cherry MX Keys for analog input without modifying them.\\ 
{{https://www.cherrymx.de/_Resources/Persistent/fdcfc281f40105a8b46c3e03b72e34e7692ab1c6/GIF_MXRGB_Std-Red.gif?300}}\\ 

**Concept:**\\ 
Use a circuit board coil to measure how far the key is pressed by measuring the inductance of the underlying coil. This should work because the Cherry MX has a metal spring inside. Also, it has been done before but without good documentation. [[https://imgur.com/gallery/ImrH7nO|See here]]\\
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[[JanSonntag:attempt1|Attempt 1]]\\
I tried using a milled single-sided circuit board and a simple circuit by electronoobs for measuring the inductance of the milled coils. Didn't work tho. But I learned some stuff about PCB coils and especially single-sided coils.
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[[JanSonntag:attempt2|Attempt 2]]\\
Here I tried designing a new circuit for the milled coils. I didn't even bother trying it out because it seems too complicated. But therefore I got into circuit-design.
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[[JanSonntag:attempt3|Attempt 3]]\\
This has the first useable results! I made my first PCB and programmed an Arduino library. Seems very promising to me and I can feel I´m on the right track.
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[[JanSonntag:attempt4|Attempt 4 (WIP)]]\\
This is still work in progress.
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[[JanSonntag:relatedLinks|Links]]\\
Here you can find some links, for which I could not find a place inside of the attempts. These may be used during development or just as a source of inspiration. 

<WRAP center round tip 60%>
This project isn't documented all at once. I keep adding stuff on the go.
</WRAP>
FabLab Kamp-Lintfort

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