copilot

Cpp
#include 

#define MAX31865_CS 10 // Depends on your wiring

// If using normal SPI connection, make sure to comment the following lines
//#define SCK_PIN 13
//#define MISO_PIN 12
//#define MOSI_PIN 11

#include 

// Use software SPI: CS, DI, DO, CLK
Adafruit_MAX31865 max = Adafruit_MAX31865(MAX31865_CS);
// Our PT100 has 2 wire connection
uint8_t nWires = 2;

void setup() {
  Serial.begin(9600);
  
  max.begin(MAX31865_2WIRE);
}

void loop() {
  uint16_t rtd = max.readRTD();

  Serial.print("RTD value: "); Serial.println(rtd);

  float ratio = rtd;
  ratio /= 32768;
  
  Serial.print("Ratio = "); Serial.println(ratio,8);
  Serial.print("Resistance = "); Serial.println(max.temperature(RNOMINAL, RNOMINAL));
  
  Serial.print("Temperature = "); Serial.println(max.temperature(100, 4300)); // pt100: 100 Ohms, 4300 reference resistance
  delay(1000);
}

valent

copilot

Cpp
#include 

#define MAX31865_CS 10 // Depende de tu configuración

// Si se utiliza una conexión SPI normal, asegúrate de comentar las siguientes líneas
//#define SCK_PIN 13
//#define MISO_PIN 12
//#define MOSI_PIN 11

#include 

// Usa SPI de software: CS, DI, DO, CLK
Adafruit_MAX31865 max = Adafruit_MAX31865(MAX31865_CS);
// Nuestro PT100 tiene una conexión de 2 cables
uint8_t nWires = 2;

void setup() {
  Serial.begin(9600);
  
  max.begin(MAX31865_2WIRE);
}

void loop() {
  uint16_t rtd = max.readRTD();

  Serial.print("Valor RTD: "); Serial.println(rtd);

  float ratio = rtd;
  ratio /= 32768;
  
  Serial.print("Ratio = "); Serial.println(ratio,8);
  Serial.print("Resistencia = "); Serial.println(max.temperature(RNOMINAL, RNOMINAL));
  
  Serial.print("Temperatura = "); Serial.println(max.temperature(100, 4300)); // pt100: 100 Ohms, resistencia de referencia 4300
  delay(1000);
}

valent

copilot

Cpp
#include 
#include 

#define MAX31865_CS_PIN 10 // CS pin on the MAX31865. Modify as necessary.

Adafruit_MAX31865 max31865 = Adafruit_MAX31865(MAX31865_CS_PIN, MAX31865_2WIRE); // for 2-wire PT100 connection.

void setup() {
  Serial.begin(9600);
  max31865.begin();
}

void loop() {
  uint16_t rtd = max31865.readRTD();
  float ratio = rtd;
  ratio /= 32768;
  Serial.println("Valores leídos del sensor:");
  Serial.print("RTD: "); Serial.println(rtd);
  Serial.print("Ratio: "); Serial.println(ratio,8);
  
  float temperatura = max31865.temperature(100, 4300.0); // Para PT100, es 100 ohmios a 0 grados Celsius y constante de resistencia de 4300.

  Serial.print("Temperatura: "); Serial.println(temperatura);

  delay(1000);
}

valent

copilot

1. Arduino Uno - MAX31865 Module

• Connect 5V on the Arduino to VCC on the MAX31865.
• Connect GND on the Arduino to GND on the MAX31865.
• Connect D10 on the Arduino to CS on the MAX31865.
• Connect D11 on the Arduino to SDI or DIN on the MAX31865.
• Connect D12 on the Arduino to SDO or DO on the MAX31865.
• Connect D13 on the Arduino to CLK on the MAX31865.

2. MAX31865 Module - PT100 Sensor

• Connect RTD+ on the MAX31865 to one lead of the PT100.
• Connect RTD- on the MAX31865 to the other lead of the PT100.
• If you're using a 3-wire PT100, connect RTD- to the second lead and RTD3 or RTDlo to the third.