@tag said in Detect change of state on switch:

@zachflem

Not sure which lights or switches you use, maybe you are able to request the state of the light. If this is not possible, the only way to see if the light is on of off is using an LDR, or Lux sensor..

I don't think I'm explaining myself very well. I don't want the state of the light, I want to detect when someone alters the state of the SWITCH, so that I can convert my existing switches, into smart input, and assign them to different things via rules.

The switch should have no defined ON or OFF state, only a trigger that says "hey the switch changed"

I hope that makes a little more sense.

the lights I want to control don't have an outlet! I might end up having to create a connection point, and it might be possible to use a 433mHz controller relay at that point, worth looking into.

I'd still need to detect the change of state at the switch on the wall, so I could retain the original usability of the light switches, rather than having to carry around a 20ch remote when in the house!

Hi Folks,
This might very well be a question more suited to the MySensors forums, but I figured I'd ask here as well, just in case anyone else has already found a solution.

I have a steel frame house, and dragging new cabled through the wall is a nightmare. Because of this I was hoping to re-use my existing rocker switches used for my lights etc.

Rather than having a set action for open and short (which would limit the use if a light was turned on via a phone or automated process) I was hoping to detect a change in state and use that to trigger an operation.

If anyone has any info on this and might be able to point me in the right direction, I'd be greatly appreciative.

Cheers!

Z

@tag for my application, I wanted to be able to manually trigger my sprinklers outside the schedule, so this seems to be working pretty well. I don't think I have a need to lock out the operation for any reason yet, but I'll keep it in mind!

I've covered how to turn relays on and off using a timer, now lets look at automating the off action based on a manual activation (by Dashboard button, Action Board or manually on the sensor page)

This method will also enable an off timer on a sensor that has been turned on via an external input.

I'll assume you have nothing setup in your system yet, other than your gateway, node and relay sensor.

We'll begin with adding a button for your relay(s) on your dashboard for easy access, then we'll create an OPERATION to turn off the relay after a delay, and lastly we'll tie the whole lot together so your relay automatically turns off after you turn it on via the dashboard.

1. Adding the dashboard buttons

   a) Enable edit mode on the dashboard:
   

   b) Click the "PLUS" icon to open the "Add New Widget" dialog:
   

   c) On the "Add New Widget" dialog, click "Sensors":
   

   d) On the new blank widget, click the COG to enter the settings:
   

   e) Enter the details of your sensor widget and select the sensors you want to add to the dashboard from the list:
   
   

   e) Your dashboard widget should now have some nice buttons for you to manually turn your relays on and off, finalise your new widget by clicking the highlighted check mark in the top right corner of the page:
   

   

2. Create the OPERATION used to turn off the relay after an amount of time

   You'll need an operation for each of the sensors (relays) you want to turn off, so repeat this step for each one.

   a) Click RESOURCES > OPERATIONS > "Add Operation"
   b) Give your new OPERATION a name
   c) Select ENABLED
   d) OPERATION TYPE: Send Payload
   e) RESOURCE: Sensor Variable
   f) Select relay sensor from list
   g) PAYLOAD: 1 (ON)
   h) DELAY: 2700 (time in seconds, 2700sec / 60 = 45min)
   i) Click SAVE
   

3. Add a rule to automatically turn off the relay

   a) Click RESOURCES > RULES > "Add Rule"
   b) Give your Rule a name
   c) For 'Condition type', select "STATE" and "SENSOR VARIABLE"

   The next line of the dialog defines the trigger for the rule, the workflow goes like this:
   "WHEN THIS == (equals) THAT, DO THIS'

   d) For 'Trigger when', select the sensor (relay) you want to turn off with this rule
   e) Select '==' (equals, as opposed to != which is 'does not equal') and select 'OFF' in the last dropdown.
   f) In the bottom section (Operations), select the operation you just created to turn off the sensor (relay)
   g) Hit Save!

   

Congrats! You can now press the button on your dashboard and know that the sensor (your relay) will turn off after your defined time!

In my system, I am using this as a manual trigger for my watering system, so I can run a sprinkler zone outside of the schedule, and not have to manually turn it off.

PREFACE: I have struggled to get some simple things to work, and I think I was plain and simply overwhelmed with the amount of options presented to me. So now that I have these simple things working, I hope that writing this guide helps other new users get their system up and running without pulling out any hair!

Simple timer based relay activation

This guide goes through the steps need to create a schedule to turn on and off a relay. In my case, the relay was to operate a sprinkler valve at 1:00am, for 45 minutes, so the values used in the following instructions reflect my use case, and may not suit your specific needs.

This first section, sets up the OPERATIONS used to turn the sensor (in this case, a relay) ON and OFF

Setting the DELAY on the OFF OPERATION, does exactly what it sounds like. Delays the activation of that OPERATION by however many seconds are entered. To activate the OPERATION as soon as it is called, enter 0 for the delay.

1. Create an OPERATION to turn the RELAY ON
   a) Click RESOURCES > OPERATIONS > "Add Operation"
   b) Give your new OPERATION a name
   c) Select ENABLED
   d) OPERATION TYPE: Send Payload
   e) RESOURCE: Sensor Variable
   f) Select relay sensor from list
   g) PAYLOAD: 1 (ON)
   h) DELAY: 0
   i) Click SAVE

2. Create an OPERATION to turn the RELAY OFF
   a) Click RESOURCES > OPERATIONS > "Add Operation"
   b) Give your new OPERATION a name
   c) Select ENABLED
   d) OPERATION TYPE: Send Payload
   e) RESOURCE: Sensor Variable
   f) Select relay sensor from list
   g) PAYLOAD: 0 (OFF)
   h) DELAY: 2700 (45 minutes)
   i) Click SAVE

The last step sets up the schedule as a TIMER. Select the options required for the day and time you want the SENSOR (relay) to operate, and add both of the OPERATIONS you just created to the timer.

3. Create a TIMER to run the schedule
   a) Click RESOURCES > TIMERS > "Add Timer"
   b) Give your new TIMER a name
   c) Select ENABLED
   d) Select the schedule using the drop-down lists.
   e) In my example, I have used a NORMAL timer, that runs DAILY, with every day selected.
   f) Select the start time for the timer
   g) If you only want your timer to run between specified dates, enter them into the VALIDITY fields.
   h) Select BOTH of the OPERATION (ON and OFF) in the selection field and add them to the RIGHT column by clicking the single right arrow
   i) Click SAVE

You now have a TIMER that will activate BOTH OPERATIONS, but as your OFF OPERATION has a delay of 2700 seconds (45 minutes) the sensor (relay) will remain active until that delay has passed and the OFF OPERATION is activated.

Hopefully this is simple enough, let me know if you'd like some pictures added to help

@jkandasa I like the scripting ability, don't get me wrong.

But...

I've got switches setup on the dashboard for 2 relays. It would be nice to add a feature to those switches to automatically turn them off after x seconds/minutes.

or

As part of the operations tab, have the option to select the sensor (in this case a relay) and set the status to "ON" and the duration to x seconds/minutes. Then setting a reoccuring timer to run, using that operation would result in the sensor (the relay) operating for the defined duration.

I might not be explaining myself very well, I'd just like to see some scheduling into the GUI so my wife could change/setup a new watering schedule if I'm not around.

A little off topic, but is there any documentation about scripting in mycontroller?

The one thing I can say would be nice (from a very early user) is less reliance one scripting based setup.

While I don't mind delving into it, the ability for my non-programming-centric wife to be able to edit the schedule for our watering system would be nice.

There is a button to change the state of my relays, why do I have to script a timer for them?

set the run time in the operation for each zone, set the schedule using the timer, run.

Hope to discuss more with you all as I learn more myself!