Signal Level Widget

This widget provides a clear visual representation of the device's signal strength, accompanied by an optional value indicator for quick reference.

Signal Level Widget

Settings

Datastream - Select or create a datastream of data type integer, or double.

Icon - Select from three options to represent Signal Level. The data stream’s minimum and maximum values are automatically mapped to four signal level icons, plus a ‘No Signal’ state.

Show value - You can show the datastream value. Turn it off to see just the icon.

Label - Set custom label before the value. E.g Signal Level: /value/

Properties you can change

You can hide/show header widgets from device. Use isHidden property API:

Blynk.setProperty(vPin, "isHidden", "propertyValue");

Where:

vPin is: virtual pin number the widget is assigned to

isHidden: property that controls the widget visibility

propertyValue: value of the property you want to change. true and false values are supported.

Example:

Blynk.setProperty(V12, "isHidden", true); // This will hide the widget

Don't put Blynk.setProperty() into the void loop() as it can cause a flood of messages and your hardware will be disconnected. Send such updates only when necessary, or use timers.

Change widget properties via HTTPs API

Updates the Datastream Property and all assigned Widgets!

GET https://{server_address}/external/api/update/property?token={your 32 char token}&pin={your vPin}&{property}={value}

The endpoint allows you to update the Datastream Property value via GET request. All widgets (both web and mobile) that are assigned to this datastream will inherit this property. The Datastream Property is persistent and will be stored forever until you change it with another value. In order to clear the property you need to clear the device data in device actions menu.

Example: https://blynk.cloud/external/api/update/property?token=GVki9IC70vb3IqvsV0YD3el4y0OpneL1&pin=V1&isHidden=true

Path Parameters

Name	Type	Description
{server address}*	string	Get from the bottom right of your Blynk console. More information.

Query Parameters

Name	Type	Description
token*	string	Device auth token from Device info
pin*	string	The datastream virtual pin (should start with "v")
{property}	string	The property of the widget you want to update: isHidden
isHidden	string	true or false

200 Success

400 Could not find a device token