The pi is connected to the module via usb. In node red I can easily connect to the “serial in” node however when trying to connect the MCP23008 node it will not connect following the online directions. I notice that the “serial in” node comes up with a different usb address USB0:115200-8N1 and the MCP23008 only has a generic address. /dev/ttyUSB0. I have enabled I2C on the pi. Do I need to download a specific firmware for this module to use with the pi? Thanks for your help.
I don’t think I fully follow what you are trying to accomplish. Do you think you could provide photos of your hardware setup?
I’ll work on getting some photos. I am connecting the pi via usb to the micro usb interface of the wifi module and having issues connecting the MCP23008 in node red. I did a test to see if I could get it connected using a serial node and I have success doing that. Same settings in the MCP23008 node will not work.
The wifi module is connected to the proXR relay module. Also, thanks for the fast reply.