Hey guys,
I've been working on the basic reading of temperature as per the instructions on Arduino site for my trinket pro 3.3v:
I've researching to better understand the use of the usb bootloader as opposed to an FTDI cable, and can't understand if i need the FTDI cable to utilize the serial monitor. I read about the workaround for debugging but i'm not sure if that's related.
When I run the program and open up the serial monitor I get nothing. Am i right in needing an FTDI cable in order to read the temperature values?
I used the following code:
//TMP36 Pin Variables
int sensorPin = A3; //the analog pin the TMP36's Vout (sense) pin is connected to
//the resolution is 10 mV / degree centigrade with a
//500 mV offset to allow for negative temperatures
/*
- setup() - this function runs once when you turn your Arduino on
- We initialize the serial connection with the computer
*/
void setup()
{
Serial.begin(9600); //Start the serial connection with the computer
//to view the result open the serial monitor
}
void loop() // run over and over again
{
//getting the voltage reading from the temperature sensor
int reading = analogRead(sensorPin);
// converting that reading to voltage, for 3.3v arduino use 3.3
float voltage = reading * 3.3;
voltage /= 1024.0;
// print out the voltage
Serial.print(voltage); Serial.println(" volts");
// now print out the temperature
float temperatureC = (voltage - 0.5) * 100 ; //converting from 10 mv per degree wit 500 mV offset
//to degrees ((voltage - 500mV) times 100)
Serial.print(temperatureC); Serial.println(" degrees C");
// now convert to Fahrenheit
float temperatureF = (temperatureC * 9.0 / 5.0) + 32.0;
Serial.print(temperatureF); Serial.println(" degrees F");
delay(1000); //waiting a second
}