Hardware Components
  • Arduino UNO & Genuino UNO
  • PHPoC WiFi Shield 2 for Arduino
  • DC Motor Controller
  • DIY DC motor Car



Demonstration





Wiring

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How To

1. Web App

We do not need to program for web app. PHPoC Shield has a bult-in web app, called "Web Remote Push". This web app is customizable via a setting page.

Default web app user interface

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Click "setup" to customize

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After changing the setting as above, we has new UI

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2. Arduino Code

The Arduino code is the combination of two example "PHPoC -> WebRemotePush.ino" and "PHPoC Expansion -> ExpansionDCMotor"


Code:
#include <Phpoc.h>
#include <PhpocExpansion.h>

PhpocServer server(80);
byte expansionId = 1;
ExpansionDCMotor dcm1(expansionId, 1);
ExpansionDCMotor dcm2(expansionId, 2);

void setup() {
  Serial.begin(9600);
  while(!Serial)
    ;

  // initialize PHPoC [WiFi] Shield:
  Phpoc.begin(PF_LOG_SPI | PF_LOG_NET);
  //Phpoc.begin();
  Expansion.begin();

  // start WebSocket server
  server.beginWebSocket("remote_push");

  // print IP address of PHPoC [WiFi] Shield to serial monitor:
  Serial.print("WebSocket server address : ");
  Serial.println(Phpoc.localIP());

  dcm1.setPolarity(1);
  dcm2.setPolarity(-1);
  // set PWM period
  dcm1.setPeriod(10000);
  dcm2.setPeriod(10000);
}

void loop() {
  // wait for a new client:
  PhpocClient client = server.available();

  if (client) {
    if (client.available() > 0) {
      // read a byte incoming from the client:
      char thisChar = client.read();

      // when an user presses a button on the web apps, the web app sends an
      // uppercase character corresponding with the name of button to Arduino.
      // When an user releases a button on the web apps, the web app sends a
      // lowercase character corresponding with the name of button to Arduino.

      if(thisChar == 'B')
      {
         Serial.println("Move forward");
         dcm1.setDirection(1);
         dcm2.setDirection(1);
         dcm1.setWidth(5000);
         dcm2.setWidth(5000);
      }
      if(thisChar == 'b')
      {
         Serial.println("Stop");
         dcm1.setWidth(0);
         dcm2.setWidth(0);
      }
      if(thisChar == 'D')
      {
         Serial.println("Turn left");
         dcm2.setDirection(1);
         dcm2.setWidth(5000);
      }
      if(thisChar == 'd')
      {
         Serial.println("Stop");
         dcm1.setWidth(0);
         dcm2.setWidth(0);
      }
      if(thisChar == 'F')
      {
         Serial.println("turn right");
         dcm1.setDirection(1);
         dcm1.setWidth(5000);
      }
      if(thisChar == 'f')
      {
         Serial.println("Stop");
         dcm1.setWidth(0);
         dcm2.setWidth(0);
      }
      if(thisChar == 'H')
      {
         Serial.println("Move backward");
         dcm1.setDirection(-1);
         dcm2.setDirection(-1);
         dcm1.setWidth(5000);
         dcm2.setWidth(5000);
      }
      if(thisChar == 'h')
      {
         Serial.println("Stop");
         dcm1.setWidth(0);
         dcm2.setWidth(0);
      }
    }
  }
}