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Arduino/Teensy/Whatever Micro-controller DIY keyboard

fuzion_reaktor

Hello element 14, I am seeking the advice of whomever may offer it on how to make a DIY keyboard using, preferably an arduino pro mini, some other small type of arduino, or another type of micro-controller. Why I want to make a DIY keyboard you might ask? Reasons. Anyway, I need your help as all the websites and forums I have checked are either speculative, or deal with number-pads, not entire keyboards. There are no guides, nor much else I can find, and I'm not really into creating my own firmware with my current skill level. I plan to create my own PCB (not including the micro controller) and use hobby store micro momentary switches and generic diodes for this, along with whatever else you may suggest.

Anyway, thank you whomever can help me, and have a nice day.

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  • in reply to supper_slash

    Forgive me, but would this not be an option also? If there are enough ADC's that is.

    I was working on a similar project, using a 430 MCU and it worked fine.

    Please let me know if this will not work, this set up uses a few resistors, and a supply of power to

    key-log.

    This is just a quick ruff draft, just for an example, but if the MCU has 5 ADC pins, i think this may be

    a viable option Peter.

    image

  • in reply to supper_slash

    That looks like it might work but I'm not sure. I'm thinking of using an arduino pro mini, and I can't find any mention of adc in its description. I could use an external ADC chip. Or, do you know of any micro-controllers with built in adc(s)? I'm finding a lot of limitations with the pro mini for my project.

  • in reply to fuzion_reaktor

    I'm not familiar with that chip, but it shows on its page to have enough inputs.

    "The Pro Mini has 8 analog inputs, each of which provide 10 bits of resolution (i.e. 1024 different values). Four of them are on the headers on the edge of the board; two (inputs 4 and 5) on holes in the interior of the board. The analog inputs measure from ground to VCC. Additionally, some pins have specialized functionality: "

     

    That should do it.

    Hears a link.

    Pins 23-28 should work. But the micro-controller i used is ahttp://www.ti.com/product/msp430g2553MSP430G2553 it works well, but i don't know if it will link up with what you are wanting to control.