Main > Main Forum
First time building a custom Control Panel - help :)
PL1:
Usable hole saw sizes are listed on the Ultimarc site.
As hole saw sizes get larger, the commonly-available steps get larger.
Not sure how much current the Ultralux 5v LEDs draw, but they probably draw at least 25mA.
25mA * 18 buttons = 450 mA
Add to that the trackball lighting and you're almost certainly over the USB spec of 500mA.
If you can power half from one USB port and half from a USB port that doesn't split the available 500mA, you should be fine.
Worst case scenario, you can add a secondary current limiting resistor to reduce the current draw.
The difference between 5v and 12v LEDs is the size of current limiting resistor.
Scott
swirlee:
To avoid using my laptops USB ports for the LEDs couldn't I just plug the LEDs into one of these?
And then just have the trackball connected to my laptop via USB?
PL1:
That looks good as long as the LEDs aren't drawing more current than the adapter is rated for.
You could also cut out the USB cable and just use a 5v wall wart or adapter with a high enough amperage rating. ;D
Scott
swirlee:
--- Quote from: PL1 on April 08, 2014, 07:59:53 pm ---
You could also cut out the USB cable and just use a 5v wall wart or adapter with a high enough amperage rating. ;D
Scott
--- End quote ---
Oh damn, there we go... what little adapter would you use to connect the daisy chain LED wires to this adapter?
Thanks!
PL1:
Cut off the round connector and use a euro-style terminal strip FTW.
Scott
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version