Serial does not name a type error in script

Projects Programming
1

Hello, i am fairly new to playing around with arduinos and i've ran into a problem, i keep getting an error on a script that i have thrown together in hopes of it working (it probably won't there is no doubt a billion things worng with it heres the script, hopefully someone smarter can figure out the issue.

#define RT0 10000   // Ω
#define B 3977      // K
#define VCC 5    //Supply voltage
#define R 10000 
#include <LiquidCrystal.h>

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup() {
  lcd.begin(16, 2);
  lcd.print("serial.output");
  lcd.setCursor(0,1);
  lcd.print("");
}

void loop() {
}


float RT, VR, ln, TX, T0, VRT;

  Serial.begin(9600);
  T0 = 25 + 273.15;                 
}

void loop() {
  VRT = analogRead(A0);              
  VRT = (5.00 / 1023.00) * VRT;      
  VR = VCC - VRT;
  RT = VRT / (VR / R);               

  ln = log(RT / RT0);
  TX = (1 / ((ln / B) + (1 / T0))); 

  TX = TX - 273.15;                 

  Serial.print("Temperature:");
  Serial.print("\t");
  Serial.print(TX);
  Serial.print("C\t\t");
  Serial.print(TX + 273.15);        
  Serial.print("K\t\t");
  Serial.print((TX * 1.8) + 32);    
  Serial.println("F");
  delay(500);

{
2

How many loop() functions do you want to have?

That code is not in a function and has an extra thingy.

is typically placed in setup().

3

It always helps if you post the error messages you see.
The IDE even has a control to help you.

4

Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advice on) your project.

Thanks for using code tags in your first post.

5

Your (second) loop() function should end in '}', not '{'.

6

Here is my best guess of what you meant to write. It compiles but I don't know if it 'works'.

#include <LiquidCrystal.h>

#define RT0 10000   // Ω
#define B 3977      // K
#define VCC 5    //Supply voltage
#define R 10000

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup()
{
  Serial.begin(9600);

  lcd.begin(16, 2);
  lcd.print("serial.output");
  lcd.setCursor(0, 1);
  lcd.print("");
}

void loop()
{
  float RT, VR, ln, TX, T0, VRT;

  T0 = 25 + 273.15;
  VRT = analogRead(A0);
  VRT = (5.00 / 1023.00) * VRT;
  VR = VCC - VRT;
  RT = VRT / (VR / R);

  ln = log(RT / RT0);
  TX = (1 / ((ln / B) + (1 / T0)));

  TX = TX - 273.15;

  Serial.print("Temperature:");
  Serial.print("\t");
  Serial.print(TX);
  Serial.print("C\t\t");
  Serial.print(TX + 273.15);
  Serial.print("K\t\t");
  Serial.print((TX * 1.8) + 32);
  Serial.println("F");
  delay(500);
}
7

theres alot of things that need to be ironed out, its really just two scripts jammed together

8

You just jammed them together wrong.

9

3 posts were split to a new topic: Error with Serial does not name a type

10

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