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The most convenient place to power the unit is from the Combo board as shown on the diagram.
Select a source of 5VDC and connect it to the appropriate pins on the Combo board, or connect to
the pigtails that are already on those pins as you receive the product.
5V Power
(Color choice by user
– Red is suggested)
A
preferred source
for clean filtered 5VDC is any
hard drive power plug
on your computer’s power
supply. These are the red and the black wire next to it.
You can take power from pins on your BOB if the BOB can supply at least 150mA.
You can use a separate filtered and regulated 5Volt DC supply. In this case, you
MUST
connect a
wire from the power supply ground to the PC ground. If you do not do this, current from the power
supply can travel over the USB cable seeking ground (this is called a ground loop). This will
completely disrupt the USB communication.
POWER GROUND
(color choice by user
– Black is Suggested)
Be sure to
connect the InTurn™ power ground to the SAME source that you got the 5VDC power
from.
