Set blinking state for LED while door is closing

[delei]

Hello

I want to set the blinking state of a LED on a dashboard while the garagen door is closing / opening.

I am using Meross nodes to get the state of the door (is closed, is opened, it is opening, it is closing). My issue is following:

At the moment I show the end state of the door (is open/closed) by LED. But, while the door is moving I can't see the state of the door - until the end positions are arived. The idea was to show a blinking LED while the door is moving.

I get the payload from the Meross node: [payload.state: "open"] at the moment the movement starts and the payload from the Meross node: [payload.digest.garageDoor[0].open] at the moment the door is in the open position.

I want the LED to flash during this time. How can I achieve this?

[jbudd]

Which dashboard are you using - node-red-dashboard (AKA Dashboard 1) or @flowfuse/node-red-dashboard (AKA Dashboard v2)?

[delei]

I am using:

node-red-dashboard
3.6.5
(node-red-dashboard (node) - Node-RED)

[dynamicdave]

I built a control system for my garage door 4-years ago using a Finite State Machine (FSM).

I installed two microswitches to detect when the door was fully open or fully closed. These signals were detected by a Wemos D1 Mini which sent the "state" to Node-RED using MQTT.

I also re-purposed a broken key-fob and connected it an output pin on the Wemos so I could "simulate" someone pressing the key-fob. My garage door is a bit dumb as once you have told it to "open" it will continue that operation until the door is fully open. If during that time you press the key-fob it will "stop" and if you press the key-fob again it will reverse its direction of travel and start "closing". A similar sequence happens when I tell the door to close. I think this is for safety reasons so if the door encounters an obstacle it will "stop" immediately. I mimicked that behaviour in the FSM mainly so I could also use Alexa to control the door.

Here's a screenshot of the state diagram showing the transitions.

If I was tackling the project again, I dare say I could arrange to flash an LED during state S1 or S3 using a non-blocking delay or equivalent.

I think I may have written this up as a Project and shared it on the forum.

EDIT: Found it...

One-button garage - help

Thanks for the reply. I try to be clearer. The garage is operated by a single button, which if pressed When closed, opens the garage. When open it closes it. From the state of opening or closing it stops it. so: if during opening or closing I press the button, it stops. the following action on the door closing or opening button (reverses the previous command). I would like to open and close the garage and monitor the status (at least to know that it is open) and for this purpose I have p…

[delei]

Thanks for your response!
The system is already running and I actually wont install additional hardware. I just looking for a possibility to modify my dashboard with the blinking LED for the working state.

[smcgann99]

If you get 4 states from the door, why not just have 4 colours for the led, 1 for each state ?

[delei]

You are right. But, the question was how I get the LED flash for two states and the same LED (at the same position on the dashboard) with two different colors for each "end-position" state.
In the meantime I solved the issue.
I prepared the payload and all other states (colors, blink, text) in advance before I handed over it to the dashboard template.