Main > Main Forum

How to wire Illuminated buttons so that they light up when pressed ?

<< < (2/4) > >>

BobA:
Looks workable but would depend on any problem it caused with the input circuitry of the keyboard encoder.  Maybe Andy at Ultimarc would be able to best say if this will work.

BadMouth:
I tried something similar when trying to trigger a relay, but the voltage droped in half when the button was pressed.  (below the 3v needed to trigger the relay)  :banghead:
I stopped messing around with it at that point for fear of frying something.
I shouldn't have dropped out of electronics class.  :'(

EDIT: nevermind, I see your circuit is using external power

Would this be simple to set up with an LedWiz or UHID?

:oj:

--- Quote from: DaOld Man on October 22, 2010, 09:12:22 am ---Wouldnt something like this work?
Of course if youhave more than one or two buttons you may want to get the 5 vdc for the LEDs from the computer power supply. USB is limited to half a amp in best scenario, Im sure.

--- End quote ---

Yes, it should work. Here are another similar examples:
http://bencao74.blogspot.com/2009/07/light-up-button-mod-schematic.html
and
http://bencao74.blogspot.com/2009/08/button-led-on-press-mod-for-toodles.html

AndyWarne:

--- Quote from: BobA on October 22, 2010, 09:41:31 am ---Looks workable but would depend on any problem it caused with the input circuitry of the keyboard encoder.  Maybe Andy at Ultimarc would be able to best say if this will work.


--- End quote ---

Yes that will work fine.

The other circuit with the inverter is the worst piece of over-engineering I have ever seen!

Andy

BobA:
Thanks Andy, good to get a professional opinion.

Navigation

[0] Message Index

[#] Next page

[*] Previous page

Go to full version