Dashboard Gauges that return to 0 if no input

Dashboard
1

Hi,
I I have some gauges that are driven by the input from mqtt sensors that arives every couple of minutes if all is working, now the gauges don't act like normal gauges and if the mqtt topics stop coming in then the gauges are still displaying the last input which leads to problems, what would be the best way to overcome this, is it to send a 0 value to the gauge ?

Thanks
Stuart

2

You can use a trigger node to send 0 if no input for x minutes. Set to send nothing, extend delay if message received, then send 0.

3

Hi,

Is the correct setup ?

trigger
trigger1039Ă—1210 51.4 KB

Thanks
Stuart

4

Not quite as you want the og message to go to gauge even if trigger is waiting. Also you are sending "0" a string, which will work for some gauges but best to send 0 a number
This is correct

[{"id":"46e9ca6abf0bc688","type":"inject","z":"b779de97.b1b46","name":"mqtt in","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":150,"y":7220,"wires":[["7916fa6baec05626","397818ab07c739a7"]]},{"id":"7916fa6baec05626","type":"debug","z":"b779de97.b1b46","name":"gauge","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":390,"y":7220,"wires":[]},{"id":"397818ab07c739a7","type":"trigger","z":"b779de97.b1b46","name":"","op1":"","op2":"0","op1type":"nul","op2type":"num","duration":"3","extend":true,"overrideDelay":false,"units":"min","reset":"","bytopic":"all","topic":"topic","outputs":1,"x":270,"y":7160,"wires":[["7916fa6baec05626"]]}]
1 Like
5

Hi E1cid,

Thanks for the Json file, I will try it on my gauges

Stuart

6

Hi,

The way you have wired it is key too as I would of put the node in between the MQTT node and the Gauge, didn't think of putting it in parallel

Thanks
Stuart