Esp8266 WifiCarRobot di Taman Prestasi Surabaya
Esp8266 WifiCarRobot di Taman Prestasi Surabaya
This my video:
Medan Berpasir Perlu Torsi yg Mantab
Esp8266 WifiCarRobot at Taman Prestasi Surabaya
https://ayojurnalku.blogspot.com/2022/07/esp8266-wificarrobot-di-taman-prestasi.html
Sandy Terrain Needs Stable Torque... i use 16volt to L298N ... very good ☕
This is my video:
👍
This is my code:
/******************* WiFi Robot Remote Control Mode - L298N 2A - aLittleModif
Modif-3:
WifiRobotCar-AP-password
by Fajar Himawan
********************/
#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <ArduinoOTA.h>
// connections for drive Motor FR & BR
int enA = D1;
int in1 = D2;
int in2 = D3;
// connections for drive Motor FL & BL
int in3 = D4;
int in4 = D5;
int enB = D6;
const int buzPin = D7; // set digital pin D7 as buzzer pin (use active buzzer)
const int ledPin = D8; // set digital pin D8 as LED pin (use super bright LED)
const int wifiLedPin = D0; // set digital pin D0 as indication, the LED turn on if NodeMCU connected to WiFi as STA mode
String command; // String to store app command state.
int SPEED = 1023; // 330 - 1023.
int speed_Coeff = 3;
ESP8266WebServer server(80); // Create a webserver object that listens for HTTP request on port 80
unsigned long previousMillis = 0;
String sta_ssid = "ota"; // set Wifi networks you want to connect to
String sta_password = "12345678"; // set password for Wifi networks
String AP_ssid = "APota"; // set Wifi networks you want to connect to
String AP_password = "12345678"; // set password for Wifi networks
void setup(){
Serial.begin(115200); // set up Serial library at 115200 bps
Serial.println();
Serial.println("*WiFi Robot Remote Control Mode - L298N 2A*");
Serial.println("------------------------------------------------");
pinMode(buzPin, OUTPUT); // sets the buzzer pin as an Output
pinMode(ledPin, OUTPUT); // sets the LED pin as an Output
pinMode(wifiLedPin, OUTPUT); // sets the Wifi LED pin as an Output
digitalWrite(buzPin, LOW);
digitalWrite(ledPin, LOW);
digitalWrite(wifiLedPin, HIGH);
// Set all the motor control pins to outputs
pinMode(enA, OUTPUT);
pinMode(in1, OUTPUT);
pinMode(in2, OUTPUT);
pinMode(in3, OUTPUT);
pinMode(in4, OUTPUT);
pinMode(enB, OUTPUT);
// Set the speed to start, from 0 (off) to 1023 (max speed)
analogWrite(enA, SPEED);
analogWrite(enB, SPEED);
// Turn off motors - Initial state
digitalWrite(in1, LOW);
digitalWrite(in2, LOW);
digitalWrite(in3, LOW);
digitalWrite(in4, LOW);
// set NodeMCU Wifi hostname based on chip mac address
String chip_id = String(ESP.getChipId(), HEX);
int i = chip_id.length()-4;
chip_id = chip_id.substring(i);
chip_id = "wificar-" + chip_id;
String hostname(chip_id);
Serial.println();
Serial.println("Hostname: "+hostname);
// first, set NodeMCU as STA mode to connect with a Wifi network
WiFi.mode(WIFI_STA);
WiFi.begin(sta_ssid.c_str(), sta_password.c_str());
Serial.println("");
Serial.print("Connecting to: ");
Serial.println(sta_ssid);
Serial.print("Password: ");
Serial.println(sta_password);
// try to connect with Wifi network about 1 seconds
unsigned long currentMillis = millis();
previousMillis = currentMillis;
while (WiFi.status() != WL_CONNECTED && currentMillis - previousMillis <= 1000) {
delay(500);
Serial.print(".");
currentMillis = millis();
}
// if failed to connect with Wifi network set NodeMCU as AP mode
if (WiFi.status() == WL_CONNECTED) {
Serial.println("");
Serial.println("*WiFi-STA-Mode*");
Serial.print("IP: ");
Serial.println(WiFi.localIP());
digitalWrite(wifiLedPin, LOW); // Wifi LED on when connected to Wifi as STA mode
delay(3000);
} else {
WiFi.mode(WIFI_AP);
WiFi.softAP(hostname.c_str(),AP_password);
//WiFi.softAP(AP_ssid,AP_password);
IPAddress myIP = WiFi.softAPIP();
Serial.println("");
Serial.println("WiFi failed connected to " + sta_ssid);
Serial.println("");
Serial.println("*WiFi-AP-Mode*");
Serial.print("AP IP address: ");
Serial.println(myIP);
digitalWrite(wifiLedPin, HIGH); // Wifi LED off when status as AP mode
delay(3000);
}
server.on ( "/", HTTP_handleRoot ); // call the 'handleRoot' function when a client requests URI "/"
server.onNotFound ( HTTP_handleRoot ); // when a client requests an unknown URI (i.e. something other than "/"), call function "handleNotFound"
server.begin(); // actually start the server
ArduinoOTA.begin(); // enable to receive update/uploade firmware via Wifi OTA
}
void loop() {
ArduinoOTA.handle(); // listen for update OTA request from clients
server.handleClient(); // listen for HTTP requests from clients
command = server.arg("State"); // check HTPP request, if has arguments "State" then saved the value
if (command == "F") Forward(); // check string then call a function or set a value
else if (command == "B") Backward();
else if (command == "R") TurnRight();
else if (command == "L") TurnLeft();
else if (command == "G") ForwardLeft();
else if (command == "H") BackwardLeft();
else if (command == "I") ForwardRight();
else if (command == "J") BackwardRight();
else if (command == "S") Stop();
else if (command == "V") BeepHorn();
else if (command == "W") TurnLightOn();
else if (command == "w") TurnLightOff();
else if (command == "0") SPEED = 330;
else if (command == "1") SPEED = 400;
else if (command == "2") SPEED = 470;
else if (command == "3") SPEED = 540;
else if (command == "4") SPEED = 610;
else if (command == "5") SPEED = 680;
else if (command == "6") SPEED = 750;
else if (command == "7") SPEED = 820;
else if (command == "8") SPEED = 890;
else if (command == "9") SPEED = 960;
else if (command == "q") SPEED = 1023;
}
// function prototypes for HTTP handlers
void HTTP_handleRoot(void){
server.send ( 200, "text/html", "" ); // Send HTTP status 200 (Ok) and send some text to the browser/client
if( server.hasArg("State") ){
Serial.println(server.arg("State"));
}
}
void handleNotFound(){
server.send(404, "text/plain", "404: Not found"); // Send HTTP status 404 (Not Found) when there's no handler for the URI in the request
}
// function to move forward
void Forward(){
analogWrite(enA, SPEED);
digitalWrite(in1, HIGH);
digitalWrite(in2, LOW);
digitalWrite(in3, HIGH);
digitalWrite(in4, LOW);
analogWrite(enB, SPEED);
}
// function to move backward
void Backward(){
analogWrite(enA, SPEED);
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
analogWrite(enB, SPEED);
}
// function to turn right
void TurnRight(){
analogWrite(enA, SPEED);
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
digitalWrite(in3, HIGH);
digitalWrite(in4, LOW);
analogWrite(enB, SPEED);
}
// function to turn left
void TurnLeft(){
analogWrite(enA, SPEED);
digitalWrite(in1, HIGH);
digitalWrite(in2, LOW);
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
analogWrite(enB, SPEED);
}
// function to move forward left
void ForwardLeft(){
analogWrite(enA, SPEED);
digitalWrite(in1, HIGH);
digitalWrite(in2, LOW);
digitalWrite(in3, HIGH);
digitalWrite(in4, LOW);
analogWrite(enB, SPEED/speed_Coeff);
}
// function to move backward left
void BackwardLeft(){
analogWrite(enA, SPEED);
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
analogWrite(enB, SPEED/speed_Coeff);
}
// function to move forward right
void ForwardRight(){
analogWrite(enA, SPEED/speed_Coeff);
digitalWrite(in1, HIGH);
digitalWrite(in2, LOW);
digitalWrite(in3, HIGH);
digitalWrite(in4, LOW);
analogWrite(enB, SPEED);
}
// function to move backward right
void BackwardRight(){
analogWrite(enA, SPEED/speed_Coeff);
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
analogWrite(enB, SPEED);
}
// function to stop motors
void Stop(){
analogWrite(enA, 0);
digitalWrite(in1, LOW);
digitalWrite(in2, LOW);
digitalWrite(in3, LOW);
digitalWrite(in4, LOW);
analogWrite(enB, 0);
}
// function to beep a buzzer
void BeepHorn(){
digitalWrite(buzPin, HIGH);
delay(150);
digitalWrite(buzPin, LOW);
delay(80);
}
// function to turn on LED
void TurnLightOn(){
digitalWrite(ledPin, HIGH);
}
// function to turn off LED
void TurnLightOff(){
digitalWrite(ledPin, LOW);
}
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