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MedeaWiz® Hydra™
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Schematics of I/O on the 9X28D Hydra™ circuit board
Hydra Input Terminals 0 through 9
The Hydra input terminals 0 through 9 have a 2.2K series resistor to help limit current flow to a
safe level for the PIC processor. There is a 47K pull-up resistor to bias the inputs to a High state.
There is a 0.1uf capacitor to help reduce stray noise.
Hydra Port 1 Input
The Sprite media player connects to Port 1 of the Hydra. The Sprite will supply the 5 Volt power
to the Hydra. The serial TX and RX are direct to the PIC processor.
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