Power for the LED's is provided by the pacdrive.
Basically I chain all the LED's together with a single source for the power that comes from the pacdrive and then you have the on / off signal come from the other terminals.
Perhaps the best way to show it is look at the keyboard building guide I did. That shows how to make one end to end ( pre-cabinet ), but I used the same method in the cabinet.
Here's the thread...
The guide is here...
Page 8 is going to show what it physically looks like with regards to the LEDs.
What you see there was the prototype to this...
...which then lead to this cabinet. Sadly due to space, that keyboard is sitting in the loft.
Edited by Reg, 06 January 2018 - 08:23 pm.