Commit 5b731d48 authored by Ahicia BOA's avatar Ahicia BOA
Browse files

Upload New File

parent b478b5b0
/*
# This sample code is used to test the pH meter V1.0.
# Editor : YouYou
# Ver : 1.0
# Product: analog pH meter
# SKU : SEN0161
*/
#define SensorPin A0 //pH meter Analog output to Arduino Analog Input 0
#define Offset 0.00 //deviation compensate
#define LED 13
#define samplingInterval 20
#define printInterval 800
#define ArrayLenth 40 //times of collection
int pHArray[ArrayLenth]; //Store the average value of the sensor feedback
int pHArrayIndex=0;
void setup(void)
{
pinMode(LED,OUTPUT);
Serial.begin(9600);
Serial.println("pH meter experiment!"); //Test the serial monitor
}
void loop(void)
{
static unsigned long samplingTime = millis();
static unsigned long printTime = millis();
static float pHValue,voltage;
if(millis()-samplingTime > samplingInterval)
{
pHArray[pHArrayIndex++]=analogRead(SensorPin);
if(pHArrayIndex==ArrayLenth)pHArrayIndex=0;
voltage = avergearray(pHArray, ArrayLenth)*5.0/1024;
pHValue = 3.5*voltage+Offset;
samplingTime=millis();
}
if(millis() - printTime > printInterval) //Every 800 milliseconds, print a numerical, convert the state of the LED indicator
{
Serial.print("Voltage:");
Serial.print(voltage,2);
Serial.print(" pH value: ");
Serial.println(pHValue,2);
digitalWrite(LED,digitalRead(LED)^1);
printTime=millis();
}
}
double avergearray(int* arr, int number){
int i;
int max,min;
double avg;
long amount=0;
if(number<=0){
Serial.println("Error number for the array to avraging!/n");
return 0;
}
if(number<5){ //less than 5, calculated directly statistics
for(i=0;i<number;i++){
amount+=arr[i];
}
avg = amount/number;
return avg;
}else{
if(arr[0]<arr[1]){
min = arr[0];max=arr[1];
}
else{
min=arr[1];max=arr[0];
}
for(i=2;i<number;i++){
if(arr[i]<min){
amount+=min; //arr<min
min=arr[i];
}else {
if(arr[i]>max){
amount+=max; //arr>max
max=arr[i];
}else{
amount+=arr[i]; //min<=arr<=max
}
}//if
}//for
avg = (double)amount/(number-2);
}//if
return avg;
}
  • CODE ECRAN

    #include <Wire.h> #include <I2C_LCD.h> I2C_LCD LCD; uint8_t I2C_LCD_ADDRESS = 0x51; //Device address configuration, the default value is 0x51.

    //For detials of the function useage, please refer to "I2C_LCD User Manual". //You can download the "I2C_LCD User Manual" from I2C_LCD WIKI page: http://www.seeedstudio.com/wiki/I2C_LCD

    void setup(void) { Wire.begin(); //I2C controller initialization. }

    void loop(void) { LCD.CleanAll(WHITE); //Clean the screen with black or white. delay(1000); //Delay for 1s.

    //8*16 font size��auto new line��black character on white back ground.
    LCD.FontModeConf(Font_6x8, FM_ANL_AAA, BLACK_BAC); 
    
    LCD.CharGotoXY(0,0);       //Set the start coordinate.
    LCD.print("Hello World!");  //Display "Hello World!" on coordinate of (0, 10).
    
    while(1);//Wait for ever. 

    }

Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment