1 Overview

In this lesson, we’ll learn how remote control a relay switch.

2 Hardware Preparation

UNO R3 board 1
Ethernet Shield W5100 1
USB cable 1
Relay 1
Jumper wires several
Breadboard 1

3 Hardware connection

Connect the relay with UNO as following diagram:

4 Add new Device

Log in Cayenne IOT platform, Add new…->Device/Widget


Click Relay Switch, and set the datasheet as followed:

In you dashboard, click”Step 1:Sketch File”, the sample sketch will be displayed,copy and paste the sketch into Arduino IDE.

Choose the Board type Arduino Uno and corret Port, remember to use your authentication token. upload the sketch to Uno board, in your Cayenne dashboad click”Setp 2 :Add Actuators” then you should see the Relay Switch was added on your dashboad:

Now you can remote control the replay switch by clicking the button on your smart phone or web browser. further more you can creat more DIY IOT Project, for example use it to control the LED.

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