I am trying to make a switch or entity in Home Assistant go on whenever a doorbell button is pressed. The doorbell button emits a RF signal which gets caught by my Sonoff RF Bridge, running Tasmota.
Whenever the doorbell button is pressed, I will get this in my Tasmota log (I redacted the string):
13:17:20.993 MQT: tele/deurbel/RESULT = {"Time":"2024-06-23T13:17:20","RfRaw":{"Data":"AA AA AA 0000 0000 0000 12341234123412341234123412341234123412341234123412 55"}}
Kind of crazy trying to do it that way.
I use the 2nd strategy listed here: Sonoff RF Bridge. Strategies for receiving data, (Thanks @123)
After that you can look at my config and see how I do it.
Copy anything you like. My config link is in my message footer.
This makes it very easy for an automation to detect whenever the doorbell button is pressed. All it needs is a State Trigger to detect when the state value changes.
alias: example
trigger:
- platform: state
entity_id: event.door_bell
to:
condition: []
action:
... etc ...
@123 One problem I’ve found is that on one button press, the doorbell will send a salvo of three signals, and all of them get detected. Is there a way to disregard the second and third signal, so that I don’t get three entries in my log?
Is the value of Data identical in all three payloads?
{
"Time": "2024-06-23T13:17:20",
"RfRaw": {
"Data": "AA AA AA 0000 0000 0000 12341234123412341234123412341234123412341234123412 55"
}
}
What is the time interval between each of the three received payloads? More than second apart or less than?
If it’s less than a second apart, I suggest you consider using a Tasmota command called ButtonDebounce.EDIT I just realized you’re using a Sonoff RF Bridge so you probably have no ability to debounce the RF doorbell.
EDIT
Here’s a simple way to make your automation ignore any triggers that occur faster than three seconds apart. Use a Template Condition to check if the last time the automation was triggered is more than 3 seconds ago. If it was less than three seconds then the trigger is ignored.
alias: example
trigger:
- platform: state
entity_id: event.door_bell
to:
condition:
- condition: template
value_template: "{{ now() - this.attributes.last_triggered > timedelta(seconds=3) }}"
action:
... etc ...
Is the value of Data identical in all three payloads?
Often, but sometimes it isn’t.
What is the time interval between each of the three received payloads? More than second apart or less than?
Less than a second.
Here’s a simple way to make your automation ignore any triggers that occur faster than three seconds apart.
This is nice, thanks. Another way to do this would be to add a delay at the end of the automation and set the automation mode to Single.
However, the (MQTT) event still pops up three times in my log for one button press. Is there a way to suppress subsequent entries, perhaps by editing the MQTT in one way or another?
I tried to create a Tasmota rule that gets triggered by RfRaw to have it emit a different MQTT message when it detects a doorbell press, but AFAIK there’s no way to parse the payload in Tasmota with Rules. So probably the best way to do this would be to create some sort of different event in Tasmota that gets fired only once.
If you don’t like seeing the three instances of the event recorded in Logbook, then I suggest modeling your door bell as an MQTT Binary Sensor. It’s the more traditional way and was used before MQTT Event was introduced.
We will use an MQTT Binary Sensor’s off_delay option and set its value to 3 (seconds).
After the MQTT Binary Sensor is created, its initial state will be unknown. It will change to on when it receives a payload containing the appropriate string. It will automatically change to off after 3 seconds.
During the 3 second period, any other payloads received will not change the binary sensor’s state so no additional state-changes will be recorded within that period.
The automation should use a State Trigger to detect the binary_sensor’s state-change from off to on. It doesn’t need a condition.
alias: example_2
trigger:
- platform: state
entity_id: binary_sensor.door_bell
from: 'off'
to: 'on'
condition: []
action:
... etc ...
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