floresta:
Try reading all of reply #1.Don
I did. Have you had a chance to read reply #9 or reply #11?
I agree with your reply number one that the lcd and thermocouple must be working. I also agree the code must be an issue. Here is a copy of the example code that you can download from the ladyada example:
/***************************************************
This is an example for the Adafruit Thermocouple Sensor w/MAX31855K
Designed specifically to work with the Adafruit Thermocouple Sensor
----> https://www.adafruit.com/products/269
These displays use SPI to communicate, 3 pins are required to
interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/
#include <SPI.h>
#include <Wire.h>
#include "Adafruit_MAX31855.h"
#include <LiquidCrystal.h>
// Example creating a thermocouple instance with software SPI on any three
// digital IO pins.
#define MAXDO 3
#define MAXCS 4
#define MAXCLK 5
// Initialize the Thermocouple
Adafruit_MAX31855 thermocouple(MAXCLK, MAXCS, MAXDO);
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
#if defined(ARDUINO_ARCH_SAMD)
// for Zero, output on USB Serial console, remove line below if using programming port to program the Zero!
#define Serial SerialUSB
#endif
void setup() {
#ifndef ESP8266
while (!Serial); // will pause Zero, Leonardo, etc until serial console opens
#endif
Serial.begin(9600);
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
lcd.clear();
lcd.print("MAX31855 test");
// wait for MAX chip to stabilize
delay(500);
}
void loop() {
// basic readout test, just print the current temp
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Int. Temp = ");
lcd.println(thermocouple.readInternal());
Serial.print("Int. Temp = ");
Serial.println(thermocouple.readInternal());
double c = thermocouple.readCelsius();
lcd.setCursor(0, 1);
if (isnan(c))
{
lcd.print("T/C Problem");
}
else
{
lcd.print("C = ");
lcd.print(c);
lcd.print(" ");
Serial.print("Thermocouple Temp = *");
Serial.println(c);
}
delay(1000);
}