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temperaturecontrol [2017/11/07 12:41]
143.159.81.63
temperaturecontrol [2018/03/13 18:48] (current)
66.243.238.211 Add a note about not using max31855 as read only
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 Note: the MAX31855 does not like having the thermocouple electrically connected to ground, and will flag an error if this happens. Make sure your thermocouple is isolated. If you must use a non-isolated thermocouple,​ try the AD8495 analog amplifier instead (see next section). Note: the MAX31855 does not like having the thermocouple electrically connected to ground, and will flag an error if this happens. Make sure your thermocouple is isolated. If you must use a non-isolated thermocouple,​ try the AD8495 analog amplifier instead (see next section).
 Note: Connecting a thermocouple and a RRD GLCD panel to the same SPI bus does not work. Note: Connecting a thermocouple and a RRD GLCD panel to the same SPI bus does not work.
-Note: you need the latest edge build if you want to have multiple Thermocouples on the SPI bus. +Note: you need the latest edge build if you want to have multiple Thermocouples on the SPI bus. 
 +Note: As of 2/13/2018, the max31855 module does not work when configured without a heater pin
  
 Here is an example of how to connect the [[http://​www.adafruit.com/​products/​269|Adafruit Thermocouple Amplifier MAX31855 breakout board]] to the smoothieboard. ​ Here is an example of how to connect the [[http://​www.adafruit.com/​products/​269|Adafruit Thermocouple Amplifier MAX31855 breakout board]] to the smoothieboard. ​