06-16-2018, 03:41 PM
Hi Jared, I'm sorry I think I told you the wrong part, I'm using the PCF8574A which is the same as the PCF8574T but uses different I2C addresses. I just checked and they don't seem to sell that chip on a module so I'll have to send you some but it'll be a few weeks as I need to order some boards.
In the meantime you can still use those but you'll need to change the address in the controller sketch which is easy to do but first we need to know the address they are set to as default.
Here's a link to a sketch you can download which will scan the I2C devices and give the addresses for each of them, if you load this on the controller and open the serial monitor in the Arduino IDE you'll get the info. If you post them I'll pick out the proper address and let you know where to change it in the controller sketch.
https://playground.arduino.cc/Main/I2cScanner
If you need more info let me know.
In the meantime you can still use those but you'll need to change the address in the controller sketch which is easy to do but first we need to know the address they are set to as default.
Here's a link to a sketch you can download which will scan the I2C devices and give the addresses for each of them, if you load this on the controller and open the serial monitor in the Arduino IDE you'll get the info. If you post them I'll pick out the proper address and let you know where to change it in the controller sketch.
https://playground.arduino.cc/Main/I2cScanner
If you need more info let me know.
