Monitor Anemometer Lux Tegangan Arus
Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang dapat memonitor kecepatan angin, lux cahaya, suhu dan kelembaban serta di monitor via Thingspeak dan ditampilkan juga ke lcd, untuk lebih jelasnya berikut adalah kodingnya.
1. Koding Arduino UNO
#include <Wire.h> // i2C Conection Library
#include <LiquidCrystal_I2C.h> //i2C LCD Library
#include <BH1750FVI.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
BH1750FVI LightSensor;
uint16_t lux;
// anemometer parameters
volatile byte rpmcount; // count signals
volatile unsigned long last_micros;
unsigned long timeold;
unsigned long timemeasure = 2.00; // seconds
int timetoSleep = 1; // minutes
unsigned long sleepTime = 15; // minutes
unsigned long timeNow;
int countThing = 0;
int GPIO_pulse = 2; // Arduino = D2
float rpm, rps; // frequencies
float radius = 0.1; // meters - measure of the lenght of each the anemometer wing
float velocity_kmh; // km/h
float velocity_ms; //m/s
float omega = 0; // rad/s
float calibration_value = 2.0;
int adcteg;
float tegangan;
int adcarus;
float v;
float arus;
void setup() {
Serial.begin(9600);
lcd.begin();
lcd.clear();
lcd.noCursor();
LightSensor.begin();
LightSensor.SetAddress(Device_Address_H);//Address 0x5C
LightSensor.SetMode(Continuous_H_resolution_Mode);
pinMode(GPIO_pulse, INPUT_PULLUP);
digitalWrite(GPIO_pulse, LOW);
detachInterrupt(digitalPinToInterrupt(GPIO_pulse)); // force to initiate Interrupt on zero
attachInterrupt(digitalPinToInterrupt(GPIO_pulse), rpm_anemometer, RISING); //Initialize the intterrupt pin
rpmcount = 0;
rpm = 0;
timeold = 0;
timeNow = 0;
}
void loop()
{
adcteg = analogRead(A0);
tegangan = adcteg * (5.0 / 1023.0) * 4.8;
adcarus = analogRead(A1);
v = adcarus * (4.8 / 1023.0);
arus = (v - 2.4)/0.1;
//Measure RPM
if ((millis() - timeold) >= timemeasure * 1000)
{
//countThing++;
detachInterrupt(digitalPinToInterrupt(GPIO_pulse)); // Disable interrupt when calculating
rps = float(rpmcount) / float(timemeasure); // rotations per second
rpm = 60 * rps; // rotations per minute
omega = 2 * PI * rps; // rad/s
velocity_ms = omega * radius * calibration_value; // m/s
velocity_kmh = velocity_ms * 3.6; // km/h
timeold = millis();
rpmcount = 0;
attachInterrupt(digitalPinToInterrupt(GPIO_pulse), rpm_anemometer, RISING); // enable interrupt
}
lux = LightSensor.GetLightIntensity();
lcd.setCursor(0,0);
lcd.print("m/s=");
lcd.print(velocity_ms);
lcd.print(" L:");
lcd.print(lux);
lcd.print(" ");
lcd.setCursor(0,1);
lcd.print("VI=");
lcd.print(tegangan,1);
lcd.print("/");
lcd.print(arus,1);
lcd.print(" ");
Serial.print("*");
Serial.print(tegangan * 100.0);
Serial.print(",");
Serial.print(arus * 100.0);
Serial.print(",");
Serial.print(lux);
Serial.print(",");
Serial.print(velocity_ms * 100.0);
Serial.println("#");
delay(100);
}
void rpm_anemometer()
{
if (long(micros() - last_micros) >= 5000)
{ // time to debounce measures
rpmcount++;
last_micros = micros();
}
}
2. Koding ESP8266
#include <ESP8266WiFi.h>
#include <ThingSpeak.h>
#include <WiFiClient.h>
int temp;
int x = 5;
int y;
int value1;
int value2;
int value3;
int value4;
float tegangan;
int lux;
float arus;
float velocity_ms;
int datain1;
int datain2;
int datain3;
int datain4;
String dataIn;
String dt[10];
int i;
boolean parsing = false;
String apiKey = "C89ZC3YLACG92XXX"; // Enter your Write API key from ThingSpeak
const char* resource = "/update?api_key=";
const char* ssid = "hotspothpku"; // replace with your wifi ssid and wpa2 key
const char* pass = "1234567890";
const char* server = "api.thingspeak.com";
WiFiClient client;
void setup()
{
dataIn="";
Serial.begin(9600);
delay(10);
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
}
void loop()
{
while(Serial.available()>0) {
// dataIn="";
char inChar = (char)Serial.read();
dataIn += inChar;
if (inChar == '\n') {
parsing = true;
}
}
if(parsing){
parsingData();
if (client.connect(server,80)) // "184.106.153.149" or api.thingspeak.com
{
String postStr = apiKey;
postStr +="&field1=";
postStr += String(tegangan);
postStr += "\r\n\r\n";
client.print(String("GET ") + resource + apiKey + "&field1=" + tegangan + "&field2=" + arus + "&field3=" + lux + "&field4=" + velocity_ms + " HTTP/1.1\r\n" + "Host: " + server + "\r\n" + "Connection: close\r\n\r\n");
client.print("Host: api.thingspeak.com\n");
client.print("Connection: close\n");
client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n");
client.print("Content-Type: application/x-www-form-urlencoded\n");
client.print("Content-Length: ");
client.print(postStr.length());
client.print("\n\n");
client.print(postStr);
Serial.println(". Send to Thingspeak.");
}
client.stop();
//Serial.println("Waiting...");
delay(10000);
}
}
void parsingData(){
int j=0;
//kirim data yang telah diterima sebelumnya
//Serial.print("data masuk : ");
//Serial.print(dataIn);
//Serial.print("\n");
//inisialisasi variabel, (reset isi variabel)
dt[j]="";
//proses parsing data
for(i=1;i<dataIn.length();i++){
//pengecekan tiap karakter dengan karakter (#) dan (,)
if ((dataIn[i] == '#') || (dataIn[i] == ','))
{
//increment variabel j, digunakan untuk merubah index array penampung
j++;
dt[j]=""; //inisialisasi variabel array dt[j]
}
else
{
//proses tampung data saat pengecekan karakter selesai.
dt[j] = dt[j] + dataIn[i];
}
}
datain1 = dt[0].toInt();
datain2 = dt[1].toInt();
datain3 = dt[2].toInt();
datain4 = dt[3].toInt();
//kirim data hasil parsing
Serial.print("data 1 : ");
Serial.print(datain1);
Serial.print("\n");
Serial.print("data 2 : ");
Serial.print(datain2);
Serial.print("\n");
Serial.print("data 3 : ");
Serial.print(datain3);
tegangan = datain1 / 100.0;
arus = datain2 / 100.0;
lux = datain3 / 1;
velocity_ms = datain4 / 100.0;
}
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