Widget Properties
The widget property is a widget attribute like color, labels, min/max, ..., and others that could be dynamically changed from the hardware or HTTPS API.
You can change the widget property assigned to a single datastream from the hardware side.
For example, you can change the color of an LED widget assigned to Virtua Pin 0:
//change LED color
Blynk.setProperty(V0, "color", "#D3435C");
//change LED label
Blynk.setProperty(V0, "label", "My New Widget Label");
//change MENU labels
Blynk.setProperty(V0, "labels", "Menu Item 1", "Menu Item 2", "Menu Item 3");
NOTE : Changing these parameters work only for widgets attached to Virtual pins (analog/digital pins won't work).
color, label, isDisabled, isHidden widget properties are supported for all widgets:label is a string for the label of all widgets.color is a string in HEX format (in the form: #RRGGBB, where RR (red), GG (green), and BB (blue) are hexadecimal values between 00 and FF). For example:#define BLYNK_GREEN "#23C48E"
#define BLYNK_BLUE "#04C0F8"
#define BLYNK_YELLOW "#ED9D00"
#define BLYNK_RED "#D3435C"
#define BLYNK_DARK_BLUE "#5F7CD8"
On the firmware side, widget objects also support
setLabel() and setColor() functions.Widget-specific properties:
Button
onLabel / offLabel is a string for ON/OFF label of a button;Styled Button
onLabel / offLabel is a string for ON/OFF label of a button;onColor / offColor is a string in HEX format for ON/OFF colors of the button;onBackColor / offBackColor is a string in HEX format for ON/OFF colors of the button background.Music Player
isOnPlay is boolean accepts true/false.Blynk.setProperty(V0, "isOnPlay", "true");
Menu
labels is a list of strings for Menu widget selections;Blynk.setProperty(V0, "labels", "label 1", "label 2", "label 3");
Video Streaming
Blynk.setProperty(V1, "url", "http://my_new_video_url");
Step
Blynk.setProperty(V1, "step", 10);
Image
Blynk.setProperty(V1, "opacity", 50); // 0-100%
Blynk.setProperty(V1, "scale", 30); // 0-100%
Blynk.setProperty(V1, "rotation", 10); //0-360 degrees
also, you can fully replace the list of images from the hardware:
Blynk.setProperty(V1, "urls", "https://image1.jpg", "https://image2.jpg");
or you can change the individual image by its index:
Blynk.setProperty(V1, "url", 1, "https://image1.jpg");
Alarm and Sound
Blynk.setProperty(V1, "isMuted", "true");
In addition to the above commands, you can also change the multiple datastream properties with one command. For example, let's assume, you want to disable multiple widgets with a single command:
Blynk.setProperty(V0, V1, V2, "isDisabled", "true");
The above command would be an alternative to the batch of single datastream commands:
Blynk.setProperty(V0, "isDisabled", "true");
Blynk.setProperty(V1, "isDisabled", "true");
Blynk.setProperty(V2, "isDisabled", "true");