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Pc wiring display module wiring – Matrix Orbital VFD2041 Legacy User Manual

Page 8

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VFD2041 rev 2

8

Connector pinout is as follows:

1 2 3 4

Figure 2-2 Power connector

Pin 1

+5.0 VDC (+8 to +15 VDC with wide voltage option)

Pin 2

SCL (I

2

C clock)

Pin 3

SDA (I

2

C data)

Pin 4

Ground

2.1.1.1 Five Volt Modules

If the VFD2041 is used in a PC it is tempting to plug a spare power connector into the unit. Don't do this!
Wiring for the PC power connector and that required for the VFD2041 are different as shown in Figure 2-3
below.

PC wiring

Display module wiring

+5 V

+5 V

GND

GND
+12 V

Figure 2-3 Power Connector wiring differences

If you don't want to modify cable wiring yourself, Matrix Orbital can supply an adapter cable designed to
use with the VFD2041 when it's installed in a PC. The cable is wired as shown in Figure 2-4 below. Note
that this cable does not provide connections for I

2

C.

Figure 2-4 Five volt Power Cable