myDevices Cayenne allows you to quickly design, prototype, and visualize IoT solutions. You can use Cayenne as a tool to visualize real-time and historical data, sent over The Things Network.
Change the payload to Cayenne LPP
In order to display your content in the Cayenne dashboard, the payload has to be encoded with the Cayenne Low Power Payload (LPP)
We need to send extra data for Cayenne to understand what data comes into their dashboard. Before we send the sensor data, we need to define what type of data it is. The first byte is the so-called
Channel ID. The second byte explains the
Data Type. The latter bytes contain the actual sensor values. Please have a look here to find more information on the Cayenne Low Power Payload (LPP).
Documentation about altering your Arduino Sketch to encode data with
CayenneLPP can be found here.
TheThingsNetwork ttn(loraSerial, debugSerial, freqPlan); CayenneLPP lpp(51); // create a buffer of 51 bytes to store the payload lpp.reset(); // clear the buffer lpp.addTemperature(1, 22.5); // on channel 1, add temperature, value 22.5°C lpp.addBarometricPressure(2, 1073.21); // channel 2, pressure lpp.addGPS(3, 52.37365, 4.88650, 2); // channel 3, coordinates ttn.sendBytes(lpp.getBuffer(), lpp.getSize());
Contact your device
In order to send data to your device, you first need to “open” a channel. For that, send a packet saying that an
Output is available, you only need to do that once. Both digital and analog are available.
lpp.addDigitalOutput(2, 1); //or lpp.addAnalogOutput(2, 120.0);
An action button will then appear on your dashboard; Now you can send data to your device with a click!
Be aware, the data sent by the dashboard will arrive on the same channel as the
Output but will be tagged as
Set the Payload Format in the Console
After encoding data with CayenneLPP, have a look at the console to change the Payload Formats
- Go to your Application in The Things Network Console and click Payload Formats
- In the dropdown menu select Cayenne LPP instead of Custom
Set up your myDevices account
- Create an account on myDevices
Log-in and click on LoRa
- Select The Things Network at the bottom of the left menu bar, click on Cayenne LPP and fill in your DevEUI of your device (which you can find in the Console)
Add the myDevices Cayenne integration in the Console
Go to your application in the Console and add the Cayenne integration via Add Integration
- You can find your Process ID in the URL of the myDevices Cayenne dashboard, starting after
- Add the integration
Build your Cayenne dashboard
Click the device on the left side of your dashboard in Cayenne and your data as well as the actions buttons are shown right away. After a bit of editing you can make quite some fancy stuff.
🎉 Now impress some folks with this amazing dashboard you built on Twitter, using @thethingsntwrk @CayenneIoT