Nanokontrol led help
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  1. #1
    Tech Mentor extraclassic's Avatar
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    Default Nanokontrol led help

    Ok I recieved a Nanokontrol in the post today that i won on Ebay the other night. I'm planning on using this as part of a mod I'm doing.

    I've just Fixed a broken usb socket and removed all the pots and faders which was straight forward enough. Next up I solder wires to the led's under each button But when i activate the button the led (green one) is too dim?

    Does anybody know if it's possible to make it brighter somehow?




  2. #2
    Tech Guru Nicky H's Avatar
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    That doesn't look like a green led to me - led's only come in certain colours and I think that one is yellow-green

    Different colour led's require different voltages so I'm guessing the yellow-green one needs more than the red.

    Or it could just be that the yellow-green one is not as bright - led's come in different brightness.

    Try changing it for a red one to see if it's the same...

    Don't forget to add a resistor as well to keep the current down
    SC | MC

  3. #3
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    The red LED that you've still got there is taking power still as well.

    I decided not to bother with the LEDs on my nK mod. You cant program changes on them so I didn't see the point.

  4. #4
    Tech Mentor extraclassic's Avatar
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    That doesn't look like a green led to me - led's only come in certain colours and I think that one is yellow-green

    Different colour led's require different voltages so I'm guessing the yellow-green one needs more than the red.

    Or it could just be that the yellow-green one is not as bright - led's come in different brightness.

    Try changing it for a red one to see if it's the same...

    Don't forget to add a resistor as well to keep the current down
    Thanks for the info Nicky. These are the led's i bought.

    http://cgi.ebay.co.uk/GREEN-Standard...item35adf269f7

    I bought some orange ones too.

    I swapped the green led for a red one like you said and it was perfect so now i could do with some advice on getting the green to shine the same as the red

    Here's a pic with a red led ....



    Don't forget to add a resistor as well to keep the current down
    This is the first time I've included led's in a project.......Could you explain some more about this please?

    The red LED that you've still got there is taking power still as well.

    I decided not to bother with the LEDs on my nK mod. You cant program changes on them so I didn't see the point.
    Thanks Steve. Yeah i know you cant program changes on them but adding led's will still be useful for some parts of my project.

  5. #5
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    I'd love to see how you wire your buttons. My connections keep breaking and I really want to just completely rewire my entire project.

  6. #6
    Tech Guru Nicky H's Avatar
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    Don't forget to add a resistor as well to keep the current down
    Quote Originally Posted by extraclassic View Post
    This is the first time I've included led's in a project.......Could you explain some more about this please?
    LED's have no resistance built into them usually, so you need to limit the current to them.
    A small change in voltage will result in a big change in current. The LED will get brighter and get hotter, and burn out.

    If you are using USB for power the source voltage should be 5V DC.

    There's lots of complcated maths to work stuff out but looking at your eBay link they recommend a resistor of 130 ohm.

    How many LED's are you gonna be using?
    Looking at the board you can see the resistors near the LED's, just check they are the right ones, I can't see the colour bands properly.
    SC | MC

  7. #7
    Tech Guru Nicky H's Avatar
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    As for getting the green as bright as the red, from what I remember green LED's need more forward voltage

    Try a yellow or orange one..
    SC | MC

  8. #8
    Tech Mentor extraclassic's Avatar
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    I'd love to see how you wire your buttons. My connections keep breaking and I really want to just completely rewire my entire project
    Where did you solder to? I found the easiest way was like this.

    This is the top row of buttons.



    And this is the bottom row.



    The wire I'm using fits nice and snug into those holes highlighted in yellow.

    If you're having problems with connections breaking what i usually do is try to keep the wire flat to the circuit board and then add some hot glue for extra strength like this

    Last edited by extraclassic; 06-06-2011 at 06:28 AM.

  9. #9
    Tech Guru MiL0's Avatar
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    Quote Originally Posted by extraclassic View Post
    I get geeky goosebumps when I see pictures like this lol

    did you remove the old line fader pots?

  10. #10
    Tech Mentor extraclassic's Avatar
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    I get geeky goosebumps when I see pictures like this lol

    did you remove the old line fader pots?
    Yeah me too

    I took all faders and pots off. I wanted to save the little faders but they were hard to remove so i got the snips on them

    It's a nice easy circuit board to mod but such a shame about no led feedback

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