OLIMEX© 2015
MOD-IO2 user's manual
1.3 Target market and purpose of the board
MOD-IO2 is an extension development board which can interface other Olimex boards via UEXT
connector it adds add RELAYs and GPIOs. Multiple MOD-IO2s are stackable and addressable. The
firmware allows you to interact with the board using simple commands and yet if you wish you can
modify the firmware for your needs.
If you work with any of our development boards with UEXT connector and you need more GPIOs
and RELAY outputs you can add these by connecting MOD-IO2 to your development board. This
board allows easy interfacing to 2 relays and 7 GPIOs. MOD-IO2 is stackable and addressable –
these boards can be plugged together and you can add as many inputs and outputs as you want! 2-4-
6-8 etc! MOD-IO2 has PIC16F1503 microcontroller and the firmware is open source and available
for modification.
The board is a very good addition to most of the Olimex boards if you need analog GPIOs and
relays.
1.4 Organization
Each section in this document covers a separate topic, organized as follow:
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Chapter 1 is an overview of the board usage and features
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Chapter 2 provides a guide for quickly setting up the board
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Chapter 3 contains the general board diagram and layout
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Chapter 4 describes the component that is the heart of the board: the PIC16F1503
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Chapter 5 covers the connector pinout, peripherals and jumper description
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Chapter 6 shows the memory map
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Chapter 7 provides the schematics
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Chapter 8 contains the revision history, useful links and support information
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