16 Arduino relays with xbee module

[ogiewon]

I know you said you’re wanting to avoid the ST ThingShield… may I ask why?

Take a look at my full solution for controlling 16 relays with support for local pushbutton control here. I also explain the data flow required for a many to one / one to many device using what I call a “Multiplexer SmartApp” with virtual devices.

Hopefully, it at least helps get you started.

Arduino + ST to control multiple Relays

@Javid_Mamedov Javid, OK, your explanation helps a lot. I do have one question though. Why does pressing the physical pushbutton connected to the Arduino send a signal back to the ST cloud, instead of simply turning on the relay locally? The act of turning on the relay locally within the Arduino, causes an update to be sent back to SmartThings, thereby updating the status of the switch-type tiles in the ST Phone Application UI. These changes can also be acted upon by other SmartApps if desired. Would that design be sufficient? I already have a version of a ST_Anything_Relays.ino Arduino sketch running that handles 16 relays on an Arduino MEGA. I also have a working ST_Anything_Relays.device.groovy custom Device Type running within SmartThings (which is installed once per Arduino) w…

@jh0