Raspberry PI2-B+ GPIO interface board 2.2

This revision is from 2016/12/02 14:41. You can Restore it.

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Specifications

Quik start guide

  1. Before connect power remove JP9 jumper from gpio board
  2. Power may be from two sources
    • 24V DC from power supply
    • 24V UPS from backup battery circuit

If you use only one source, connect power to UPS input - this is monitoring internal A/D converter and LED on front panel)

Connectors

  • J1 +24V DC Power
  • J6 J15 - four rotator interface AC od DC Power
  • J5 - RJ9 connector for other I2C temp sensors
  • P16 - where the relay switch voltage on outs, here is voltage IN
  • P1-P12 - GPIO Relay outputs
  • J7-J10 - connect four rotator interface

Jumpers

  • J2 - Power switch and LED
  • J11 - two free A/D inputs
  • I2C - set address A/D converter
  • JP1-JP8 - preset power each rotator interface separately
  • J4 - I2C bus
  • J3 - switched +5V for USB hub
  • Green 1-4 - measuring points input four A/D converters

Trimmer

  • R27-R30 - voltage divider for A/D converter

RemoteQTH server presets

typycaly set A/D converter - It depends on the settings of the input voltage divider (Trimmer R27-R30)

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