Listing 4-1 presents the complete Arduino sketch that can be used to control the Mini Round Robot with the Joystick widget on the Blynk app:
#include <ESP8266WiFi.h>#include <BlynkSimpleEsp8266.h>#include <Wire.h>#include <Adafruit_MotorShield.h>// You should get Auth Token in the Blynk App.// Go to the Project Settings (nut icon).char auth[] = "da999e8ef4ac42148f9fe8427dxxxxxx";// Your WiFi credentials.// Set password to "" for open networks.char ssid[] = "xxxxxx";char pass[] = "xxxxxx";Adafruit_MotorShield AFMS = Adafruit_MotorShield();Adafruit_DCMotor *L_MOTOR = AFMS.getMotor(4);Adafruit_DCMotor *R_MOTOR = AFMS.getMotor(3);// This function will be called every time Joystick ...
