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Old 01-02-2011, 11:20 AM   #4 (permalink)
gelatmi1
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Posts: 872
 

Join Date: May 2006
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The USB specifications speak about 5 volts on PIN 1 so could be possible that 5 volts are enough to feed directly the trainer module !!

Did you try it?

Specifications
Length 5 meter (maximum)
Width 11.5 mm (A-plug), 8.45 mm (B-plug),
Height 4.5 mm (A-plug), 7.78 mm (B-plug, pre-v3.0)
Hot pluggable Yes
External Yes
Electrical 5 volt DC
Max. voltage 5 volts
Max. current 500-900 mA @ 5 V (depending on version)
Data signal Packet data, defined by specifications
Width 1 bit
Bandwidth 1.5-625 MB/s
Max. devices 127
Protocol Serial
Cable 4 wires
Pins 4 (1 supply, 2 data, 1 ground)
Connector Unique
Pin out

The standard USB A plug (left) and B plug (right)
Pin 1 VCC (+5 V)
Pin 2 Data-
Pin 3 Data+
Pin 4 Ground
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