Dim lights when button is pressed

Third party integrations Node-RED
1

I got a zdB5100 Matrix Switch. When a button is pushed and held I can catch the following in debug. When released the scene data value changes to 7740.

object
  event_type: "zwave.scene_activated"
  entity_id: "zwave.logic_soft_unknown_type_0003_id_0121"
event: object
  entity_id: "zwave.logic_soft_unknown_type_0003_id_0121"
  node_id: 7
  scene_id: 2
  scene_data: 7800

I want to build a dimmer that takes the current brightness value of a light in HA and increases the brigtness value untill the button is released. Likewise I want the opposite to decrease brightness when another scene_id (button) is pressed.

2

I’d probably give the traffic node a try. Simply listen for the scene data and if it changes to 7800 turn the traffic node to “allow” and then make a loop increasing the brightness. When you release the switch, the scene_data changes to 7740 and that in turn needs to turn the traffice node to “disallow” or “stop”.

Im using something similar with the Ikea Tradfri remote:

[
    {
        "id": "2db5a6a5.ddffda",
        "type": "switch",
        "z": "d4113bbe.91f4a8",
        "name": "",
        "property": "payload",
        "propertyType": "msg",
        "rules": [
            {
                "t": "eq",
                "v": "brightness_up_hold",
                "vt": "str"
            },
            {
                "t": "eq",
                "v": "brightness_up_release",
                "vt": "str"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 2,
        "x": 330,
        "y": 1000,
        "wires": [
            [
                "235ac263.baf1de",
                "79a7a052.73"
            ],
            [
                "79a7a052.73"
            ]
        ]
    },
    {
        "id": "235ac263.baf1de",
        "type": "api-current-state",
        "z": "d4113bbe.91f4a8",
        "name": "",
        "server": "2fba4297.e4145e",
        "version": 1,
        "outputs": 2,
        "halt_if": "off",
        "halt_if_type": "str",
        "halt_if_compare": "is",
        "override_topic": false,
        "entity_id": "light.wohnzimmer",
        "state_type": "str",
        "state_location": "payload",
        "override_payload": "msg",
        "entity_location": "data",
        "override_data": "msg",
        "blockInputOverrides": false,
        "x": 870,
        "y": 1000,
        "wires": [
            [],
            [
                "3d5903d0.c8a5cc"
            ]
        ]
    },
    {
        "id": "3d5903d0.c8a5cc",
        "type": "function",
        "z": "d4113bbe.91f4a8",
        "name": "Lower or Higher",
        "func": "newmsg = {}\n\nvar currentbrightness = msg.data.attributes.brightness\nvar up = currentbrightness + 45\n\nnewmsg.payload = { data: { \"brightness\":(up)},\"transition\":\"1\" };\n\n\n\nreturn newmsg;",
        "outputs": 1,
        "noerr": 0,
        "x": 1100,
        "y": 1000,
        "wires": [
            [
                "6c08d8e4.aa23d8"
            ]
        ]
    },
    {
        "id": "6c08d8e4.aa23d8",
        "type": "api-call-service",
        "z": "d4113bbe.91f4a8",
        "name": "Wohnzimmer 100%",
        "server": "2fba4297.e4145e",
        "version": "1",
        "service_domain": "light",
        "service": "turn_on",
        "entityId": "light.wohnzimmer",
        "data": "",
        "dataType": "json",
        "mergecontext": "",
        "output_location": "",
        "output_location_type": "none",
        "mustacheAltTags": false,
        "x": 1290,
        "y": 1000,
        "wires": [
            [
                "6cd31cf3.8c09f4"
            ]
        ]
    },
    {
        "id": "79a7a052.73",
        "type": "traffic",
        "z": "d4113bbe.91f4a8",
        "name": "",
        "property_allow": "payload",
        "filter_allow": "brightness_up_hold",
        "ignore_case_allow": false,
        "negate_allow": false,
        "send_allow": false,
        "property_stop": "payload",
        "filter_stop": "brightness_up_release",
        "ignore_case_stop": false,
        "negate_stop": false,
        "send_stop": false,
        "default_start": false,
        "differ": false,
        "x": 650,
        "y": 1000,
        "wires": [
            [
                "235ac263.baf1de"
            ]
        ]
    },
    {
        "id": "6cd31cf3.8c09f4",
        "type": "delay",
        "z": "d4113bbe.91f4a8",
        "name": "",
        "pauseType": "delay",
        "timeout": "1",
        "timeoutUnits": "seconds",
        "rate": "1",
        "nbRateUnits": "1",
        "rateUnits": "second",
        "randomFirst": "1",
        "randomLast": "5",
        "randomUnits": "seconds",
        "drop": false,
        "x": 480,
        "y": 1000,
        "wires": [
            [
                "79a7a052.73"
            ]
        ]
    },
    {
        "id": "89e8dfba.f919b",
        "type": "server-state-changed",
        "z": "d4113bbe.91f4a8",
        "name": "Button?",
        "server": "2fba4297.e4145e",
        "version": 1,
        "entityidfilter": "sensor.ikea_remote_action",
        "entityidfiltertype": "exact",
        "outputinitially": false,
        "state_type": "str",
        "haltifstate": "",
        "halt_if_type": "str",
        "halt_if_compare": "is",
        "outputs": 1,
        "output_only_on_state_change": true,
        "x": 70,
        "y": 1000,
        "wires": [
            [
                "513118c2.ffcf08",
                "387a685a.e54248",
                "2db5a6a5.ddffda",
                "9001417d.475cf",
                "f79774f7.10fe88"
            ]
        ]
    },
    {
        "id": "9bd2c2f0.f1535",
        "type": "comment",
        "z": "d4113bbe.91f4a8",
        "name": "Up",
        "info": "",
        "x": 330,
        "y": 960,
        "wires": []
    },
    {
        "id": "2fba4297.e4145e",
        "type": "server",
        "z": "",
        "name": "Home Assistant",
        "legacy": false,
        "hassio": true,
        "rejectUnauthorizedCerts": true,
        "ha_boolean": "y|yes|true|on|home|open",
        "connectionDelay": true
    }
]

image
image1436Ă—100 17.2 KB

1 Like
3

This might help with making a loop to increase or decrease the lights

https://notenoughtech.com/home-automation/nodered-home-automation/xiaomi-aqara-switch-in-nodered/

4

Thank you very much for the input. I got the traffic light working by using your flow and altering. However, I get a brightness NaN in the debug node at the last step. Not sure why the variable is not working.
50

39
392238Ă—244 55.4 KB

5

Is the light on when you get the NaN? What kind of light is it?
What does it normally report?

6

Yes it is on. It’s two hue lights in a group, which comes up as one entity from HA. If I place an inject node before the current state then the debug after the function outputs a value for brightness as expected.

Here is the traffic node, which appears to work as intended.

06
061028Ă—1246 52 KB

7

You could try to set the override topic setting in the current_state: light.dinning_table node.

8

Thanks. The “block input overrides” did the trick. Now I just need to figure out how to make it smooth dimming instead of jumpy increments.

9

Don’t forget to pasta a nice finished copy of the code !
:grinning:

10

Woud you post the code of what you have so far?