Quote Originally Posted by magu View Post
I use 5V from the power supply of the computer for both the diaply and the board..
Hi Magu,

The +5V from the power supply of the computer should be OK.
Make sure you use a cable with 0.75mm² or 1mm² wires and that
the cable is less than 2 meters.
Connect a 470µF capacitor to the +5V on the board with the PIC
and a 470µF capacitor to the +5V on the board with the LEDs.

Best regards,

Luciano