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This project is an example of remotely controlled car via WIFI. The circuit is based on ESP8266, and the software is written in the Arduino IDE. As an engine driver, I used the L298N. The vehicle's speed is controlled by PWM in the range of 0 to 1023. Digital control offers more possibilities than the usual controller. I also added a RGB LED as light and buzzer as a horn.

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DIY WIFI RC car with ESP8266 and Arduino IDE

Step 1: Components

Components that I used in this project.

Step 2: Schematic

Diagram of a remote controlled car.

Step 3: Software for ESP8266

Before you upload the software to ESP8266 setup your WiFi connection.
	#define WIFI_SSID ""
	#define WIFI_PASSWORD ""
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <WiFiUdp.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <Adafruit_NeoPixel.h>

#define PIN D8
#define LICZBADIOD 1
 
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(LICZBADIOD, PIN, NEO_GRB + NEO_KHZ800);

//---------------------------------------

#define CMD_NONE 0
#define CMD_LED 1

typedef struct TRCcar{
  short speed;
  short turn;
  uint8_t flags;

  uint8_t cmd;

  uint8_t r;
  uint8_t g;
  uint8_t b;
};

//---------------------------------------

//const char COMPILED[] PROGMEM  = { __DATE__ " " __TIME__ };
#define WIFI_SSID ""
#define WIFI_PASS ""

int cnt_loop = 0;
long time_loop;

//---------------------------------------

void setup() {
  Serial.begin(115200);
  Serial.println( "\r\n\r\n--------------------------------------" );
  Serial.println( "START setup" );
  delay(500);
  
  BlinkLedSteup();
  MotroSetupA();
  MotroSetupB();

  //---------------------------------
  WiFi.mode(WIFI_STA);
  //WiFi.mode(WIFI_AP_STA);
  //Serial.print("Setting soft-AP ... ");
  //Serial.println(WiFi.softAP(GetNameDev().c_str(), "1234") ? "Ready" : "Failed!");
  //Serial.println(WiFi.softAP("ESP8266-test", "1234") ? "Ready" : "Failed!");
  
  WiFi.begin(WIFI_SSID, WIFI_PASS);
  //WiFi.hostname( GetNameDev() );

  Serial.print("Connecting to WIFI");

  // Wait for connection
  while( WiFi.status() != WL_CONNECTED ) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println( WIFI_SSID );
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  //---------------------------------
  UDPSetup();
  BeepSetup();

  pixels.begin();
  //pixels.setPixelColor(0, 255, 0, 0);
  //pixels.show();
  
  Serial.println( "END setup" );
}


void loop() {
  time_loop = millis();
  
  BlinkLed();
  SerialEvent();
  SerialCMD();
  UDPLoop();
  BeepLoop();
}
Download source code

Step 4: Computer Control Software

The program I control wrote in C #. For PC communication with ESP8266 I used UDP protocol. All commands are executed immediately without delay. The car is driving great, I think much better than the original controller.

Step 5: Test Drive

wwwGoogle pluseTwitter
<p>can you please send the source code for Arduino uno and ESP8266 1</p>
<p>Source code you can download from: <br><a href="http://geek.adachsoft.com/home/article/id/27/n/DIY-WIFI-RC-car-with-ESP8266-and-Arduino-IDE/refid/it#software">http://geek.adachsoft.com/home/article/id/27/n/DIY...</a></p>

About This Instructable

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Bio: Software, electronics, do-it-yourself
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