Hey all! I am completely new to programming in Arduino, but it's necessary for a project I'm working on this summer. I searched for some information on this topic but I was unable to find any that made sense to me, or was exact to what I'm trying to do.
The components that I have working together are: Arduino Uno, SparkFun MAX31855K Thermocouple Breakout, SparkFun FTDI Basic Breakout 3.3V, Type K Thermocouple, and SparkFun microSD Shield.
I have all of those wired and soldered together using the SparkFun hook-up guide, and when utilizing the code they provide to go with the hook-up, I am able to get proper data to display in the Serial Monitor.
My next step would be to get that exact data to record to a microSD card so that I can collect and record data without being hooked up to a computer.
I've found code provided by Arduino about how to Read/Write to a microSD card, but I'm unable to figure out how to integrate that with my already-working sensor code.
Below is the code I have working for my sensor:
/**************** MAX31855K_Thermocouple_Digitizer_Example.ino *****************
* *
* MAX31855K Thermocouple Breakout Example Code *
* brent@sparkfun.com *
* March 26th 2015 *
* https://github.com/sparkfun/MAX31855K_Thermocouple_Digitizer *
* *
* Use the "serial monitor" window to read a temperature sensor. *
* *
* Circuit: *
* MAX31855K breakout attached to the following pins *
* SS: pin 10 *
* MOSI: pin 11 (NC) *
* MISO: pin 12 *
* SCK: pin 13 *
* VCC: pin 14 *
* GND: pin 15 *
* *
* *
* Development environment specifics: *
* 1.6.4 *
* Arduino Pro Mini 328 3.3V/8MHz *
* *
* This code is beerware; if you see me (or any other SparkFun employee) at *
* the local, and you've found our code helpful, please buy us a round! *
* Distributed as-is; no warranty is given. *
******************************************************************************/
#include <SparkFunMAX31855k.h> // Using the max31855k driver
#include <SPI.h> // Included here too due Arduino IDE; Used in above header
// Define SPI Arduino pin numbers (Arduino Pro Mini)
const uint8_t CHIP_SELECT_PIN = 10; // Using standard CS line (SS)
// SCK & MISO are defined by Arduiino
const uint8_t VCC = 14; // Powering board straight from Arduino Pro Mini
const uint8_t GND = 15;
// Instantiate an instance of the SparkFunMAX31855k class
SparkFunMAX31855k probe(CHIP_SELECT_PIN, VCC, GND);
void setup() {
Serial.begin(9600);
Serial.println("\nBeginning...");
delay(50); // Let IC stabilize or first readings will be garbage
}
void loop() {
float temperature = probe.readCJT();
// Read methods return NAN if they don't have a valid value to return.
// The following conditionals only print the value if it's not NAN.
if (!isnan(temperature)) {
Serial.print("CJT is (˚C): ");
Serial.println(temperature);
}
// Read the temperature in Celsius
temperature = probe.readTempC();
if (!isnan(temperature)) {
Serial.print("Temp[C]=");
Serial.print(temperature);
}
// Read the temperature in Fahrenheit
temperature = probe.readTempF();
if (!isnan(temperature)) {
Serial.print("\tTemp[F]=");
Serial.print(temperature);
}
// Read the temperature in Kelvin
temperature = probe.readTempK();
if (!isnan(temperature)) {
Serial.print("\tTemp[K]=");
Serial.print(temperature);
}
// Read the temperature in Rankine
temperature = probe.readTempR();
if (!isnan(temperature)) {
Serial.print("\tTemp[R]=");
Serial.println(temperature);
}
delay(750);
}
Any help would be greatly appreciated; thank you in advance! 