The Center connector is a male DB9, and is the Auxiliary connector. As such, it has connections that are not needed for most operation. However if you wish to develop a Mouse based, or parallel data based EL/AZ interface, or do your own programming of the PICC processor you will need to use the AUX connector. Contact us via email if you need further information on these activities.

Pin 1 is an output that is in parallel with the TX LED on the board. It goes high when DrzTrack or the F1EHN EME program indicates that it is your transmit period. This could be used to key your rig, start your keyer, etc.

Pins 7 and 8 can be used with a hardware motor speed control device.  They go to logic high during the low speed conditions set in the control program.  When low speed is not required, the lines go low, allowing the motors to run at full speed.  When tracking, normally the motors will run slow all the time because the new target position will be achieved before the low speed conditions are exceeded.  But when moving the antenna a large distance to initially achieve tracking, the motors will be able to run at full speed.

Male DB9 - Auxillary Connector
1 Tx LED output (for F1EHN sequencing)
2 Txd out (for mouse)
3 Rxd in (for mouse)
4 Processor reset
5 Ground
6 Parallel Load out and Processor RB7 (for programming)
7 Parallel Clock out and Processor RB6 (for programming). Also speed control for Elevation.
8 Parallel Data in, Mouse clock in or out, and Processor RB3 (for debugging). Also speed control for Azimuth.
9 VCC out (+5 vdc)

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