Example Flows

This section of the documentation includes example flows, you’re welcome to submit further flows either via a pull request on GitHub, via Slack or by contacting node-red@cb-net.co.uk.

Input Controller

This flow shows a simple Input Controller example for a Yamaha MusicCast AV Receiver (using Yamaha AVR Nodes as endpoint).

Note

There is no state supported by the InputController capability.

Flow code (copy and paste into Node-RED):

[{"id":"b2e5a71f.ce6948","type":"alexa-smart-home-v3","z":"affa0b92.8813b8","conf":"bfd0fcf4.bc90e","device":"8","acknowledge":true,"name":"AV Receiver","topic":"","x":130,"y":100,"wires":[["b1cb891c.e1d0a8"]]},{"id":"78b9e3f4.f9401c","type":"AVR-Yamaha-put","z":"affa0b92.8813b8","device":"d15a41e7.73539","name":"Set AVR to Input Payload","topic":"Main_Zone.Input.Input_Sel","payload":"","x":670,"y":100,"wires":[[]]},{"id":"b1cb891c.e1d0a8","type":"change","z":"affa0b92.8813b8","name":"Remove spaces from payload","rules":[{"t":"change","p":"payload","pt":"msg","from":" ","fromt":"str","to":"","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":390,"y":100,"wires":[["78b9e3f4.f9401c"]]},{"id":"d15a41e7.73539","type":"avr-yamaha","z":"","name":"Lounge AV Receiver","address":"0.0.0.0","port":"","debug":false}]

Tip

For this example to work you must install/ use the Yamaha AVR Node-RED nodes.

Playback Controller

This flow shows a simple Playback Controller example for a Kodi RPC endpoint (used as a Plex client).

Note

There is no state supported by the PlaybackController capability.

Flow code (copy and paste into Node-RED):

[{"id":"519d45a2.45356c","type":"http request","z":"affa0b92.8813b8","name":"Bedroom Kodi Power On","method":"GET","ret":"txt","url":"http://192.169.1.100:8080/jsonrpc?request={\"jsonrpc\":\"2.0\",\"method\":\"Addons.ExecuteAddon\",\"params\":{\"addonid\":\"script.json-cec\",\"params\":{\"command\":\"activate\"}},\"id\":1}","tls":"","x":750,"y":660,"wires":[[]]},{"id":"f2ec1012.29ae2","type":"http request","z":"affa0b92.8813b8","name":"Bedroom Kodi Power Off","method":"GET","ret":"txt","url":"http://192.168.1.100:8080/jsonrpc?request={\"jsonrpc\":\"2.0\",\"method\":\"Addons.ExecuteAddon\",\"params\":{\"addonid\":\"script.json-cec\",\"params\":{\"command\":\"standby\"}},\"id\":1}","tls":"","x":1130,"y":700,"wires":[[]]},{"id":"f99e0eb9.00291","type":"http request","z":"affa0b92.8813b8","name":"Bedroom Kodi Stop","method":"GET","ret":"txt","url":"http://192.168.1.100:8080/jsonrpc?request={\"jsonrpc\":\"2.0\",\"method\":\"Player.Stop\",\"params\":{\"playerid\":1},\"id\":1}","tls":"","x":730,"y":700,"wires":[["eb1ffd69.c955b"]]},{"id":"eb1ffd69.c955b","type":"delay","z":"affa0b92.8813b8","name":"","pauseType":"delay","timeout":"5","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":940,"y":700,"wires":[["f2ec1012.29ae2"]]},{"id":"7379f6e7.023b28","type":"comment","z":"affa0b92.8813b8","name":"Uses HDMI CEC to Turn on TV","info":"","x":770,"y":620,"wires":[]},{"id":"a917b54d.a91138","type":"switch","z":"affa0b92.8813b8","name":"switch msg.command","property":"command","propertyType":"msg","rules":[{"t":"eq","v":"TurnOn","vt":"str"},{"t":"eq","v":"TurnOff","vt":"str"},{"t":"eq","v":"Pause","vt":"str"},{"t":"eq","v":"Play","vt":"str"},{"t":"eq","v":"Stop","vt":"str"}],"checkall":"true","repair":false,"outputs":5,"x":360,"y":720,"wires":[["519d45a2.45356c"],["f99e0eb9.00291"],["393cc3e.680103c"],["393cc3e.680103c"],["42be5f30.30ed5"]]},{"id":"133b1547.a2447b","type":"alexa-smart-home-v3","z":"affa0b92.8813b8","conf":"bfd0fcf4.bc90e","device":"10","acknowledge":true,"name":"Bedroom TV","topic":"","x":150,"y":720,"wires":[["a917b54d.a91138"]]},{"id":"393cc3e.680103c","type":"http request","z":"affa0b92.8813b8","name":"Bedroom Kodi PlayPause","method":"GET","ret":"txt","url":"http://192.168.1.100:8080/jsonrpc?request={\"jsonrpc\":\"2.0\",\"method\":\"Player.PlayPause\",\"params\":{\"playerid\":1},\"id\":1}","tls":"","x":750,"y":740,"wires":[[]]},{"id":"42be5f30.30ed5","type":"http request","z":"affa0b92.8813b8","name":"Bedroom Kodi Stop","method":"GET","ret":"txt","url":"http://192.168.1.100:8080/jsonrpc?request={\"jsonrpc\":\"2.0\",\"method\":\"Player.Stop\",\"params\":{\"playerid\":1},\"id\":1}","tls":"","x":730,"y":780,"wires":[[]]}]

Tip

For this example to work you need to install the Kodi json-cec add-on, and setup fixed/ reserved IP addresses for your Kodi devices.

Motion Sensor

Note

Google Home does not currently support motion sensors, and as a result you cannot use these devices as triggers to perform other actions.

Use the flow below to send motion sensor updates to Amazon/ Alexa - useful if you want to be able to perform actions that may not be achievable locally via NBode-RED or MQTT (for example getting Alexa to speak or interact with other Alexa-connected smart home devices and services).

Function code needed to submit the state updates to the Node-RED Smart Home Control service, and in-turn Amazon:

// Motion State
if (msg.payload == "ON") {
    return { "payload" : { "state" : { "motion" : "DETECTED" } }, "acknowledge" : true };
}
else if (msg.payload == "OFF") {
    return { "payload" : { "state" : { "motion" : "NOT_DETECTED" } }, "acknowledge" : true };
}

Tip

In the majority of cases it will be more performant and more reliable to use your local Node-RED instance or MQTT server perform actions based upon motion sensor state changes.

Temperature Sensor

Note

Google Home does not currently support dedicated temperature sensors.

Use the flow below to send temperature sensor updates to Amazon/ Alexa, the temperature sensor in this instance is an ESP8266 multi-sensor running Tasmota.

An ‘MQTT In’ node is configured to listen on the relevant multi-sensor Tasmota telemetry topic:

tele/sensor-esp-5/SENSOR

Whilst the function node code will vary by environment, in this example we take the standard Tasmota telemetry messages and convert the output for use with the state node:

var jsonPayload = JSON.parse(msg.payload);
var temperature = jsonPayload.SI7021.Temperature;

return { "payload" : { "state" : { "temperature" : temperature } }, "acknowledge" : true };