View source for DigIO16-I2C

[[File:tindie-mediums.png|link=https://www.tindie.com/products/5160/]]

[[File:DigIO16-I2C-X3-CCA-5454-640px.jpg]]

== Features ==

* 16 bit GPIO
* [http://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf MCP23017] I2C Parallel I/O
** I2C host interface
** 100/400 KHZ operation
** 25mA sink/source capability per I/O
* Jumper selectable terminators
* 3-bit address (Jumper selectable) - Up to 8 boards
* I2C Connector
** Daisy-chained 4-pin host interface connector (Ground, Power, Clock, Data)
* Power Connector
* DB-25 Connector for GPIO lines
* 24LC024 [Open_Data_Acquisition_System#Personality_EEPROM Personality EEPROM]
** pid = 1
* 3.3V or 5V operation
* Compatible with Arduino, Raspberry Pi, BeagleBone Black
* 95x95mm form factor
* (4) 6-32 mounting holes - one on each corner

== Connectors ==

=== J1 - Power Connector (Optional) ===

[[File:DIGIO16-I2C-X2-J1-POWER.PNG]]

=== J2, J3 - Daisy-chained I2C Connectors ===

[[File:DIGIO16-I2C-X2-J2-I2C.PNG]]

=== J4 - Address Base Jumpers ===

* Install for address bit = 0

[[File:DIGIO16-I2C-X2-J4-ADR.PNG]]

=== J5 - Interrupt/Card Present ===

[[File:DIGIO16-I2C-X2-J5-INT.PNG]]

=== J6 - I2C Terminators ===

[[File:DIGIO16-I2C-X2-J6-I2C-TERM.PNG]]

=== J7 - Write Enable Jumper ===

* Install to enable writes

[[File:DIGIO16-I2C-X2-J7-WR-ENABLE.PNG]]

=== J8 - DB-25F I/O connector ===

[[File:DIGIO16-I2C-X2-J8-DIGIO.PNG]]

== Schematic ==

* [http://land-boards.com/DigIO16-I2C/DigIO16-I2C_X3_Schematic.pdf Schematic]

== Drivers ==

=== Arduino ===

* [https://github.com/land-boards/lb-Arduino-Code/tree/master/libraries/LandBoards_MCP23017 LandBoards_MCP23017 Driver code]
* [https://github.com/land-boards/lb-Arduino-Code/tree/master/libraries/LandBoards_MCP23017/examples/PROTO16I2CBlink LandBoards_MCP23017 Example code]

=== Raspberry Pi ===

* [https://github.com/land-boards/RasPi/blob/master/RPI-I2C-Hub/RPI-I2C-Hub-2x16/RPI-I2C-Hub-2x16.py Example code]

== Assembly Sheet ==