Hello
Excuse me for disturbing you.
Sorry for my English, I'm french and I use google translation
I need help probably like many people.
I am totally new to the Arduino field and I lean over to a PC Mod.
My project is to create cooling fins on the top of my box which open depending on the temperature.
Powered with a servomotor and DS18B20
With no knowledge I tried to merge two programs (knob and DS18x20)
I eased the DS18x20 to display the temperature only
But I blocked for 4 lines
Here is my complete code
#include <OneWire.h>
#include <Servo.h>
OneWire ds(10); // on pin 10 (a 4.7K resistor is necessary)
Servo myservo; // create servo object to control a servo
int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin
void setup(void) {
Serial.begin(9600);
myservo.attach(9); // attaches the servo on pin 9 to the servo object
}
void loop(void) {
byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float celsius;
if ( !ds.search(addr)) {
ds.reset_search();
delay(250);
return;
}
for( i = 0; i < 8; i++) {
}
if (OneWire::crc8(addr, 7) != addr[7]) {
Serial.println("CRC is not valid!");
return;
}
ds.reset();
ds.select(addr);
ds.write(0x44, 1); // start conversion, with parasite power on at the end
delay(750); // maybe 750ms is enough, maybe not
present = ds.reset();
ds.select(addr);
ds.write(0xBE); // Read Scratchpad
for ( i = 0; i < 9; i++) { // we need 9 bytes
data[i] = ds.read();
}
int16_t raw = (data[1] << 8) | data[0];
if (type_s) {
raw = raw << 3; // 9 bit resolution default
if (data[7] == 0x10) {
// "count remain" gives full 12 bit resolution
raw = (raw & 0xFFF0) + 12 - data[6];
}
} else {
byte cfg = (data[4] & 0x60);
// at lower res, the low bits are undefined, so let's zero them
if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms
else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms
else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms
//// default is 12 bit resolution, 750 ms conversion time
}
celsius = (float)raw / 16.0;
Serial.print(" Temperature = ");
Serial.print(celsius);
Serial.println(" Celsius ");
}
{
val = analogRead(potpin); // reads the value of the potentiometer (value between 0 and 1023)
val = map(val, 0, 1023, 0, 180); // scale it to use it with the servo (value between 0 and 180)
myservo.write(val); // sets the servo position according to the scaled value
delay(15); // waits for the servo to get there
}
And 4 lines that pose worries I think
int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin
val = analogRead(potpin); // reads the value of the potentiometer (value between 0 and 1023)
val = map(val, 0, 1023, 0, 180); // scale it to use it with the servo (value between 0 and 180)
I look with digitalRead order, but I have not managed to adapt
I saw another program, but was told that it was not compatible with my hardware
the code
// Controlling a servo position using a temperature sensor
// by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>
// edited 5-12-2010 by Will Lyon to include base setting for servo if voltage not detected on pin 7
// edited again 7-4-2010 by crenn to simplify the code a little
// edited yet again 7-5-2010 by crenn to add features
// edited again 7-21-2010 by Will Lyon - recalibrated servo positions
#include <Servo.h>
Servo myservo; // create servo object to control a servo
//Constants
const unsigned char CONTROL = 7; // digital pin used to detect if the system is on or off
const unsigned char temps = 0; // analog pin used to connect the temp sensor
const unsigned char MAX_VAL = 10;
//Main global varibles
char trigger = 0; // varible used to store the control pin value
unsigned int val; // variable to read the value from the analog pin
unsigned int updateAvgtemp(){
static int history[MAX_VAL]={0};
static unsigned char lastHist=0;
static unsigned char numHist=0;
unsigned int temp=0;
unsigned char counter=0;
unsigned char arcount=0;
history[lastHist] = analogRead(temps);
if(numHist<MAX_VAL)
++numHist;
arcount=lastHist;
++lastHist;
if(lastHist>=MAX_VAL)
lastHist=0;
temp=0;
counter=0;
do{
temp+=history[arcount];
arcount--;
if(arcount>MAX_VAL)
arcount=(MAX_VAL-1);
counter++;
}while(counter < numHist);
return (temp/numHist);
}
void setup()
{
pinMode (CONTROL, INPUT); // sets the control pin to input
myservo.attach(9); // attaches the servo on pin 9 to the servo object
digitalWrite(CONTROL, LOW); // ensure internal pullup resistor is disabled.
}
void loop()
{
trigger = digitalRead(CONTROL); // read input of pin CONTROL and store it
if (trigger == HIGH){ // reads if pin CONTROL, if true, do this:
val = updateAvgtemp(); // read the value of the temp sensor (value with range of 1024)
val = map(val, 350, 700, 160, 80); // scale it to use it with the servo (value between 160 and 80)
myservo.write(val); // sets the servo position according to the scaled value
}
else {
myservo.write(180); // sets servo position to 180 if above statment is false
}
delay(125); // wait 25ms for the servo to move to it's new position and also 100ms until it gets the new value
}
Thank you in advance for your help
