资料链接：https://pan.baidu.com/s/1b31IeLyi_sNMWzRPN0ldqQ 提取码：rv8u

 
MAX31855具有冷端补偿，将K、J、N、T或E型热电偶信号转换成数字量。 器件输出14位带符号数据，通过SPITM兼容接口、以只读 格式输出。转换器的温度分辨率为0.25℃，高温度读数 为+1800℃，低温度读数为-270℃，对于K型热电偶， 温度范围为-200℃至+700℃，保持±2℃精度.

 

说明：

一、测量温度范围： 零下200摄氏度 至 零上1350摄氏度

二、适用探头，K型热电偶，模块不配套，需要独立购买

三、SPI接口，高速传输

四、输入电压3-5v直流

五、直接数字输出温度值，无需放大器，无需ADC

六、14位分辨率，0.25度温度精度

配置文件修改方法：

 
 
temperature_control.hotend.enable            true             # 
temperature_control.hotend.thermistor_pin    0.24             # 
temperature_control.hotend.heater_pin        2.7              # 
temperature_control.hotend.thermistor        RRRF100K         # 
temperature_control.hotend.set_m_code        104              #
temperature_control.hotend.set_and_wait_m_code 109            #
temperature_control.hotend.designator        T                #
 修改为：
 
 
temperature_control.hotend.enable            true             # 
#temperature_control.hotend.thermistor_pin    0.24             # 
temperature_control.hotend.chip_select_pin    0.16
temperature_control.hotend.spi_channel         0    # SPI channel 0 or 1
temperature_control.hotend.heater_pin        2.7              # 
#temperature_control.hotend.thermistor        RRRF100K         # 
temperature_control.hotend.sensor        max31855  
temperature_control.hotend.set_m_code        104              #
temperature_control.hotend.set_and_wait_m_code 109            #
temperature_control.hotend.designator        T                #
Description
Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. The MAX31855K does everything for you, and can be easily interfaced with any microcontroller, even one without an analog input. This breakout board has the chip itself, a 3.3V regulator with 10uF bypass capacitors and level shifting circuitry, all assembled and tested. Comes with a 2 pin terminal block (for connecting to the thermocouple) and pin header (to plug into any breadboard or perfboard).
New! Now uses the MAX31855K instead of the MAX6675, so it can measure a wider temperature measurement range. Please note! the MAX31855 is not pin compatible or drop-in code compatible with the MAX6675. We do have an Arduino library for both chips but you'll need to adjust any existing MAX6675 designs for the mew MAX31855. The MAX6675 has been discontinued by Maxim.

Version 2.0 now includes ferrite beads and filter capacitor onboard for better stability

Works with any K type thermocouple
Will not work with any other kind of thermocouple other than K type
-200°C to +1350°C output in 0.25 degree increments - note that K thermocouples have about ±2°C to ±6°C accuracy
Internal temperature reading
3.3 to 5v power supply and logic level compliant!
SPI data output requires any 3 digital I/O pins.            

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