Arduino 24v I/o shield question

1 Mar 2018

I’m trying to figure a few things out and I’m running into a roadblock that’s frustrating me pretty decent.

i have a ruggeduino and a 24v industrial I/o shield both from rugged circuits. I’ve read all the info available about this shield and I still just can’t figure out how to address the pins.

For example it has banks of digital inputs(B0-B9) and banks of digital outputs(P1-P8), how would I go about something like: int B1Pin = ?? .... pinMode(B1Pin, INPUT).... digitalRead(B1Pin) & digitalWrite(P3Pin)? Or something like that

Top Comments

dougw over 8 years ago +3

It uses an I2C I/O expander (MCP23017) on Arduino Pins A4 and A5. You need to send data via I2C to access most of the I/O. https://www.rugged-circuits.com/24v-industrial-tech-page
genebren over 8 years ago in reply to masterbri +2

Brian, It appears that the 'address' is set by the following jumper: Digital Inputs and Outputs are driven by an I2C I/O Expander (MCP23017) on Arduino Pins A4 and A5. The I2C Address of the expander may…
mcb1 over 8 years ago in reply to masterbri +1

There is an example sketch on the 24v I/O board page, near the bottom. It only talks about a single input but should be enough. You won't need the PinMode commands as it's using I2C via A4, A5 of the Arduino…

dougw over 8 years ago

It uses an I2C I/O expander (MCP23017) on Arduino Pins A4 and A5.
You need to send data via I2C to access most of the I/O.
https://www.rugged-circuits.com/24v-industrial-tech-page
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