56_LED Indicator Board

To save on space, I decided to put all the LED system indicator components on a very small PCB that could be mounted to a side wall in the electronic enclosure and connected to the processing PCB with one small flex cable.  Figure 1 shows the Multisim schematic for the LED board and Figure 2 the current PCB layout.  The LED’s consume more power than it would be safe for the PIC to distribute so I had to use other IC components to relay power to them.  I should have used single transistors, but to save time I just used the same inverter gates I’ve used for the motor control schematic.  If the PIC sends and ON/OFF signal to the inverters, the inverters will relay the opposite signal to the LED using the power rails instead of the PIC’s I/O power.