Hi All, I am not sure if there is a welcome area but hi, just new to the forum and fairly new to Shelly receiving my first Shelly1 & Shelly1PM early in January.
Really pleased with the devices, software seems great and I have worked out and tested most of the features and functions but I have drawn a blank!
I am trying to do something quite specific and I am struggling. I have a Shelly1 and 1PM and I am trying to get one to control the other, I want the switch inputs on one device to control the relay output on the other quickly.
As I have it linked and setup just now using a scene and rules, if I close the switch contacts on "Device 1" within about 1 second "Device 2" relay will come on, if I open the switch contacts on "Device 1", then "Device 2" will follow within about 1 second - but I need to be able to use the relay to go closed circuit for perhaps a single 250ms button pulse say within a 150ms tolerance.
At the moment if I close the switch contacts on "Device 1" for say 250-500ms then it doesn't even register on "Device 2" so too slow and they are side by side!
According to this page (https://shelly.cloud/support/direct…munication-ddd/) if you use DDD (Direct Device to Device) then the "speech" is extremely fast - just a few milliseconds. Sounds good to me.
But I cannot get these actions to work.
As I see if if I take the "Button Switched on URL" and put the IP address of the device I want to control I would make that: http://192.168.0.13/Red/0?turn=on - now assuming that syntax is correct then my thinking is that my device which is online and was at 192.168.0.13 would have come on - not a chirp.
OK - so thinking about it all, first these 2 devices must be on the same network obviously, so they were both on the home wi-fi - both therefore I know could see each other as they were talking to each other. So I can only assume that the code is wrong.
Then this got me thinking, that means this setup needs to sit on a WiFi network - routers changes, wifi drops out etc. so I was aiming to run them on their own little network - so I set one up as a wifi access point, I can then connect my iPad to its own wifi network and navigate to its little web-server and take command of it via 192.168.33.1 - I could then connect my iPad to the the wifi network of the second device and I could have then linked it to the wifi network of the first device - see where I am going? However, I had a sudden through before I hit yes - how would I then ever connect to that device again? My thinking was that if I then connected to the network formed of the first device, I would be able to see the second device also connected to it and presumably issued with it's own IP address from device 1 - but I wouldn't know what that IP address was and I am not sure how I would locate it as the discover app might not see it - that would then potentially give me a bricked Shelly!
Now, I have looked into MQTT stuff and I understand that I could ping MQTT commands about from home automation software and that is something I am interested in for my own house (can anyone recommend good free software for this - Home Assistant? But otherwise how do I create and broadcast MQTT commands?
Also, I want to make this 2 device setup as standalone as possible - so I like the idea of pre-configuring them on their own little wifi network then as soon as they power up they should just work.
Any help would be much appreciated - once I get my head around linking them up standalone and work out DDD and MQTT then I think I will quickly work out how to make things happen and be less of a burden on the forum but I just cannot find enough help or guides etc. to get me over the hump. I have spent probably around 12hrs over the last week researching and trying and trying and it's so simple yet I can't get them going.
