Single Relay unit

Relay Unit can be used as an electrically operated switch, uses an electromagnet to mechanically operate a switch, where it is necessary to control a large power load circuit by a separate low-power signal, like a digital signal output from a microprocessor. Up to 30V DC and 220V AC.

	• Port: B • Connection: Grove cable

Sensor configuration:

{
    {
  "m5devices": [
    {
      "uid": "M5",
      "sensors": [
        {
          "id": "relay",
          "type": "relay",
          "events": {
            "onOpen": {
              "event": "open"
            },
            "onClose": {
              "event": "close"
            }
          },
          "settings": {
            "pin": 21
          }
        }
      ]
    }
  ]
}

Simple usage in content

In this tutorial We will use M5 stack fire as device and a Single relay unit as sensor.

• This Unit uses the B(black)port in M5 stack fire so you have to attach the sensor with a Grove Cable into your device. Then connect your sensor into the screen where you wish to use it.

• In Wallboard Sensor Designer, you have to make the sensor configuration.

• When you open it you have to login into your editor account you use then make a fast connection to your sensor.

• If you are connected, you have to choose port B, then relay.

• Enable the events you wish to use in your content, then send it to the screen you chose in the Content editor you use.

If you wish to see or customize your sensor config:

• Open the Content editor where you sent the configuration, and focus to the screen you selected.

• Right click on the screen: Manage screen >> Set>> Set sensor configuration

How to make your content

	• Inside your content you will need 2 text widgets like this: • Name them as your events: - open - close

Then you need to add Touch actions to your text widgets:

Open:

Close:

Save then assign to your screen. When you click on the button you chose the relay receives the event.