Hardware:
ESP8266 and Arduino UNO, few sensors. Here is the small video about hardware.
Source Code - Complete sketch file
/*
Cayenne ESP8266 Shield WiFi Example
Adapted from Blynk’s ESP8266_Shield_HardSer Example
This sketch connects to the Cayenne server using an ESP8266 WiFi module as a shield connected
via a hardware serial to an Arduino.
You should install the ESP8266HardwareSerial.zip library via the Arduino IDE (Sketch->Include Library->Add .ZIP Library)
from the Cayenne extras/libraries folder (e.g. My Documents\Arduino\libraries\Cayenne\extras\libraries) to compile this example.
NOTE: Ensure a stable serial connection to ESP8266!
Firmware version 1.0.0 (AT v0.22) or later is needed.
You can change ESP baud rate. Connect to AT console and call:
AT+UART_DEF=115200,8,1,0,0
For Cayenne Dashboard widgets using digital or analog pins this sketch will automatically
send data on those pins to the Cayenne server. If the widgets use Virtual Channels, data
should be sent to those channels using virtualWrites. Examples for sending and receiving
Virtual Channel data are under the Basics folder.
*/
//#define CAYENNE_DEBUG // Uncomment to show debug messages
//#define CAYENNE_PRINT Serial // Comment this out to disable prints and save space
#include <CayenneESP8266Shield.h>
// Cayenne authentication token. This should be obtained from the Cayenne Dashboard.
char token = “xxxxxxxxxxx”;
char ssid = “AMIT AGRAWAL”;
char password = “xxxxxxxxx”;
// Set ESP8266 Serial object
#define EspSerial Serial
ESP8266 wifi(EspSerial);
void setup()
{
//Serial.begin(9600);
delay(10);
// Set ESP8266 baud rate
EspSerial.begin(115200);
delay(10);
Cayenne.begin(token, wifi, ssid, password);
}
void loop()
{
Cayenne.run();
}
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 !