• MegaIO-HOME User's Guide

MegaIO for Home automation User's Guide

The MEGA-IO is a stackable expansion card for Raspberry Pi B+, 2, 3 and Zero. Two of the Raspberry Pi’s GPIO pins (pin 3 and pin 5) are used for I2C communication. Pins 8 and 10 are used for firmware programming, but are available to the user as GPIO. Pin 7 is allocated for the interrupt handler, leaving 23 GPIO pins available for the user. MEGA-IO adds the following I/O functions: 

  • Eight on-board relays
  • Eight 12 bit A/D inputs
  • Eight optically isolated inputs
  • One 12 bit DAC Output
  • Four open collector outputs
  • Six GPIO's

Up to four MEGA-IO cards can be stacked on top of a Raspberry Pi.

Any of the inputs of the MEGA-IO can be configured as interrupt inputs.

Table of Contents

  • GENERAL DESCRIPTION
  • BOARD LAYOUT
  • BLOCK DIAGRAM
  • COMPONENT DESCRIPTION
  • STACK LEVEL JUMPERS
  • MEGA-IO HEADER
  • RASPBERRY PI HEADER
  • RELAY HEADERS
  • POWER REQUIREMENTS
  • HARDWARE SPECIFICATIONS
  • MECHANICAL SPECIFICATIONS
  • SOFTWARE SETUP
  • MEGA-IO ADD-ON CARDS
  • MEGA-IO SELF-TEST CARD
  • MEGA-IO LED-CARD
  • MEGA-IO BREAK-OUT CARD
  • DIN-RAIL KIT for RASPBERRY PI
  • 8-RELAY ADD-ON BOARD
  • MEGA-IO TESTING WITHOUT A TEST CARD

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MegaIO-HOME User's Guide

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