Hey! It's been about 2 months i'm using NodeRED i'm about to use FRED for my small project The project is to monitor soil humidity. I didn't know how to sends alerts in notification dashboard when the humidity <30% Does anyone know how to create the flow? I'm using mqtt protocol with NodeMCU V3…

You want to send alerts to ? The dashboard won't send alerts (although you could somehow create it) unless you mean the notification in the dashboard itself. You already have mqtt, so create the alert in the node-red editor with a flow.

do you know the flow configuration for creating an alert in the editor?

How do you want to receive the alert? email ? Telegram ? In the dashboard ? It would be nice if you could explain what you want to achieve and what your flow looks like.

Take a look at the cookbook, examples in there such as this should get you started https://cookbook.nodered.org/basic/route-on-property

Here's a link to a soil moisture project that some of my IoT students tackled last September. It might give you some ideas to get you started. [image] Soil Moisture Sensor/Monitor Share Your Projects Soil Moisture Sensor/Monitor instruction sheet Node-RED flow Node-RED…

In its simplest form, you want to create and "alert" when a value is > a "limit" right? So add a switch node and set the comparison type to > and the value to 30 (or whatever equates to 30%) then feed that to a switch node that sets payload to a suitable string e.g. "humidity is greater than 30%" a…

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Send Limit Alerts while humidity<30%

Dashboard

dynamicdave 9 August 2019 08:39 6

Here's a link to a soil moisture project that some of my IoT students tackled last September.
It might give you some ideas to get you started.

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Send Limit Alerts while humidity<30%

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