MOD-IO2 is a stackable development board which adds RELAYs and GPIOs to any of our development boards with UEXT. If you work with any of our development boards with a UEXT connector and you need more GPIOs and/or RELAY outputs, you can add these by connecting MOD-IO2 to your development board. This board gives you an easy way to interface up to 2 relays and 7 GPIOs. MOD-IO2 is stackable and addressable, what does this mean? It means that these boards can stack together so you can add as many inputs and outputs as you want! E.g. 2-4-6-8 etc.! MOD-IO2 has a PIC16F1503 microcontroller and the firmware is available for modification.
FEATURES
PIC16F1503 microcontroller
Pre-loaded open-source firmware for easier interfacing, especially with Linux-enabled boards
ICSP 6-pin connector for in-circuit programming with PIC-KIT3 or other compatible programmer/debugger.
9-pin terminal screw connector for 7 GPIOs, 3.3V and GND
PWR jack for 12VDC
7 GPIOs which could implement different functionality as PWM, SPI, I2C, ANALOG IN/OUT etc.
2 relay outputs with 15A/250VAC contacts with screw terminals
RELAY output status LEDs
Four mounting holes - 3.3mm ~ (0.13)"
FR-4, 1.5mm ~ (0.062)", soldermask, white silkscreen component print
Dimensions 61x52mm ~ (2.4 x 2.05)"
DOCUMENTS
MOD-IO2 user's manual
HARDWARE
MOD-IO2 schematic
MOD-IO2 schematic and board layout sources for Eagle
SOFTWARE
MOD-IO2 firmware version 3.02
Linux tool for controlling MOD-IO2
Arduino IDE library for MOD-IO2 + OLIMEXINO-328
OLIMEXINO-STM32 and MOD-IO2 relay control
Older firmware, older demo software, customer projects and more might be found at the wiki page: MOD-IO2 article
FAQ
I found a very nice example of MOD-IO2 connected to another board in the internet. It doesn't work despite that I use the same setup as the author. What might be different?
There are number of firmware revisions that had been released for MOD-IO2. You should ensure the example you have found used the same firmware revision of MOD-IO2 as the one you have on the module at the moment. Each major firmware revision uses a different board address (for firmware revisions 3, 3.1, and 3.02, it is the same - 0x21) AND DIFFERENT PROTOCOL. Each firmware has a README file inside the source archive that is available for download. Refer to that README or the user's manual for more information about the firmware.