LED Control(On/Off)

Creating LED ON button

Let's create a button to turn on the LED.

• Go to the "Design" section.
• Click on "Button"
• Create button inside the rectangle which we had already created to control PIN 0
• Name the button as "LED ON"
• Select "Style" as "Success Button" which will change button colour to Green.
• Click "Start/Edit workflow" to go to the Workflow section.

Setting an action for LED ON button

We shall now add an action to this button in the Workflow section.

• Go to "Click here to add an action"
• Go to "Plugins"
• Select "digitalWrite"

Set the STATUS as HIGH and PIN as 0. This will configure the action of this button to switch on the LED connected to PIN 0.

Creating LED OFF button

Let's follow the same steps as above and create a button to turn off the LED.

• Go to the Design section
• Click on "Button"
• Create the button inside the rectangle to the right side of the LED ON button.
• Name the button as "LED OFF"
• Select "Style" as "Danger Button" which will change button colour to Red.
• Click "Start/Edit workflow" to go to the Workflow section.

Setting an action for LED OFF button

Let's add an action to this button in the Workflow section.

• Go to "Click here to add an action"
• Go to "Plugins"
• Select "digitalWrite"

Set the STATUS as LOW and PIN as 0. This will configure the action of this button to switch off the LED connected to PIN 0.

Let's test the buttons by going to the Design section and clicking on "Preview".

You should be able to tun the LED ON/OFF by clicking respective buttons.
If the device is offline, below error message is shown.

Here is the step by step video for this section.

In the next section, we shall learn how to control the intensity of the LED or any o/p device connected to the configured PIN.