ESP8266 Wifi + 1 Relay Configuration

rsiegel · June 26, 2017, 10:37pm

Hi @er.simarpreetsingh, I wanted to let you know that we recently added official ESP8266 support to Cayenne through Add New > Device Widget > Microcontrollers in the web dashboard UI. I should be clear that this is support for ESP8266 as a standalone board to do your project with, not as a Wifi shield to be combined with an Arduino (or any other device).

Is it possible that you could design your project in this way so as to rely on our official support rather than sketches obtained through this community? I think if you are just turning controlling a single relay this may simplify your project a lot and allow you to eliminate the Arduino from the equation entirely.

rsiegel · December 4, 2017, 9:14pm

Bumping this old thread to share that we’ve just provided support in our MQTT Arduino library for using ESP8266 as a shield for an Arduino device. We’ve done basic testing and works well. Give it a try for your project and let us know how it works out for you !

Here is the updated library on our github:

and the code can be found here:

github.com

myDevicesIoT/Cayenne-MQTT-Arduino/blob/master/examples/Connections/ESP8266Shield/ESP8266Shield.ino

/*
This sketch connects to the Cayenne server using an ESP8266 WiFi module as a shield connected via a hardware serial to an Arduino.

The CayenneMQTT Library is required to run this sketch. If you have not already done so you can install it from the Arduino IDE Library Manager.

Steps:
1. Install the ESP8266SerialLibrary.zip library via the Arduino IDE (Sketch->Include Library->Add .ZIP Library) from the Cayenne extras/libraries
   folder (e.g. My Documents\Arduino\libraries\CayenneMQTT\extras\libraries) to compile this example.
2. Connect the ESP8266 as a shield to your Arduino. This example uses the Serial1 hardware serial pins available on the Mega. You can also try 
   using a software serial, though it may be less stable.
3. Set the Cayenne authentication info to match the authentication info from the Dashboard.
4. Set the network name and password.
5. Compile and upload the sketch.
6. A temporary widget will be automatically generated in the Cayenne Dashboard. To make the widget permanent click the plus sign on the widget.

NOTE: This code requires ESP8266 firmware version 1.0.0 (AT v0.22) or later.
*/

//#define CAYENNE_DEBUG       // Uncomment to show debug messages
#define CAYENNE_PRINT Serial  // Comment this out to disable prints and save space

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ESP8266 Wifi + 1 Relay Configuration

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