My Arduino code for the above post (unchanged from the example) is:
/**************************************************************
* Blynk is a platform with iOS and Android apps to control
* Arduino, Raspberry Pi and the likes over the Internet.
* You can easily build graphic interfaces for all your
* projects by simply dragging and dropping widgets.
*
* Downloads, docs, tutorials: http://www.blynk.cc
* Blynk community: http://community.blynk.cc
* Social networks: http://www.fb.com/blynkapp
* http://twitter.com/blynk_app
*
* Blynk library is licensed under MIT license
* This example code is in public domain.
*
**************************************************************
*
* This example shows how to use ESP8266 Shield via Hardware Serial
* (on Mega, Leonardo, Micro...) to connect your project to Blynk.
*
* 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
*
* Change WiFi ssid, pass, and Blynk auth token to run :)
* Feel free to apply it to any other example. It's simple!
*
**************************************************************/
//#define BLYNK_DEBUG
#define BLYNK_PRINT Serial // Comment this out to disable prints and save space
#include <ESP8266_HardSer.h>
#include <BlynkSimpleShieldEsp8266_HardSer.h>
// Set ESP8266 Serial object
#define EspSerial Serial1
ESP8266 wifi(EspSerial);
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "YourAuthToken";
void setup()
{
// Set console baud rate
Serial.begin(9600);
delay(10);
// Set ESP8266 baud rate
EspSerial.begin(115200);
delay(10);
Blynk.begin(auth, wifi, "ssid", "pass");
}
void loop()
{
Blynk.run();
}
@joelrsails as @psoro points out you don’t have a Serial1 port on an Uno (Mega’s + Leonardo do) so it needs to be just Serial. You can ‘create’ another serial port by going down the soft serial route but it’s not recommended.
Sure enough, using the Software Serial Blynk example @ 9600 baud works great! Just had to use the “AT+CIOBAUD=9600” command to change the baud rate of the wifi chip.