Saw Uber Home Automation, want to add wired nodes

[maalpo]

Hi everybody,

Great Project! I am new here and I don't speak good English.

I want to connect 5 arduino mini nodes with I2C to an arduino uno with Ethernet shield (on second floor), and from there with Ethernet connection to the host with openhab.
Is it possible to use same software with some modification for bidirectional control of nodes?

Thanks!

[papa]

maalpo, welcome to the DIY Home Automation party.

I'm not sure I understand what you are trying to accomplish or why, but I'll try to answer based on what I think you mean.  (Forgive me if I misunderstand.)

It sounds like you are refer to the Uber Home Automation Instructable that launched this forum. It also sounds like (based on Uber...) you want to connect nodes via I2C wiring & have the communication be bidirectional.

In this forum, we mostly use another much more effective approach based on computourist's work that solved some of the self-admitted issues in the Instructable.

A computourist style Gateway (built with one Arduino, not two) will connect wirelessly to more than 5 nodes at an impressive distance. No wired connection is needed except between the Gateway & the computer that hosts OpenHAB / MQTT.

Also (unlike with the Uber Home Automation Instructable), the computourist-style Gateway-Nodes approach uses bidrectional communication. That is, Nodes can send data to Gateway / OpenHAB (as in the Instructable), but also OpenHAB / Gateway can command nodes to do things (like switch on a relay).

Several of my threads in this forum document using this approach.

I posted a documentation thread for this DIY Home Automation project that might be somewhat simpler than previous versions.