Mcp23008 relay board

Add-ons Bindings
1

Is there an add-on for a MCP23008 8-Bit I/O Expander? I want to use relay board with MCP23008 on I2C bus. I see there is a add-on for a MCP23017 but i cant see any for MCP23008

2

Doesn’t appear to be. However, you could try using the GPIO addon.

3

I understand the MCP23008 and MCP23017 are quite identical, apart for the one reading/writing 1 byte and the other 2 bytes.
I do not know the binding, as I have the 23017 read by an ESp, but would it be possible to use the MCP23017 binding for the MCP23008 and just ignore one of the bytes?

4

Yea, maybe, or maybe I will just take some time to change that binding for the MCP23008, because it is already included in java library.

1 Like
5

Hello,

has there been any Progress in this case?
I also need to solve that problem. Got a CE Board with both, Mcp23017 and 23008 on it. So 24 Inputs. Also i need to pass a command to set the Pins high (init.d??). How do i adress this case? I’m barely a programmer but i have some sense of it. Would be happy at any answer. Thx a lot for the effort.

Cheers Andrew