• MegaIO for Building Automation User's Guide

MegaIO for Building Automation User's Guide

The MegaIO for Building Automation is a stackable expansion card for Raspberry Pi B+, 2, 3 and Zero. Two of the Raspberry Pi’s GPIO pins are used for I2C communication. Another pin is allocated for the interrupt handler, leaving 23 GPIO pins available for the user. Any input can be configured as an interrupt. Up to four cards can be stacked on top of a Raspberry Pi.

The card adds the following features to Raspberry Pi:

  • Four 0-10V Inputs
  • Four 10K Temperature Sensor Inputs
  • Eight 0-10V Outputs  
  • Four Optically Isolated Digital Inputs  
  • Four Optically Isolated Open Drain  Outputs
  • Four Optically Isolated 10A/250V Relays
  • Four Relay LED's
  • Four General Purpose LED's
  • RS485, CAN, 1 Wire communication
  • Real time clock with battery backup
  • Configurable Interrupts

Table of Contents

  • GENERAL DESCRIPTION
  • INDUSTRIAL vs BUILDING AUTOMATION FEATURES
  • BOARD LAYOUT
  • BLOCK DIAGRAM
  • CONNECTORS PINOUT
  • COMMUNICATIONS CONNECTOR
  • CONFIGURATION JUMPERS
  • RASPBERRY PI HEADER
  • RELAY TERMINAL BLOCKS
  • POWER REQUIREMENTS
  • SCHEMATICS
  • 4-20mA Input Loops Setup (IND only)
  • 4-20mA Output Loops Setup (IND only)
  • ANALOG INPUTS/OUTPUTS CALIBRATION
  • HARDWARE SPECIFICATIONS
  • LINEARITY OVER FULL SCALE
  • MECHANICAL SPECIFICATIONS
  • SOFTWARE SETUP

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MegaIO for Building Automation User's Guide

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Tags: MegaIO-Building User's Guide