Supply 5-V DC and GND to J6, as shown in Figure 3-1. The board now looks like Figure 3-6. BoosterPack LED D18 turns on, which shows that the board has power. Note: For some encoders the
BoosterPack may not provide an adequate current at power up. If the encoder
fails to respond, try connecting a power supply external to the BoosterPack
to the encoder. If this is done, connect a common ground to the
BoosterPack.