temperature_control.module_name.enable true Whether to activate this temperaturecontrol module. You can create as many temperaturecontrol modules as you want, simply by giving a new module a name, and setting it's enable option to true
temperature_control.module_name.thermistor_pin 0.23 Pin for the thermistor to read. ADC ports TH1 to TH4 are pins 0.23 to 0.26.
temperature_control.module_name.readings_per_second 20 How many times per second to read temperature from the sensor.
temperature_control.module_name.pwm_frequency 2000 How many times per second to switch the heating element on or off. Set to a low value ( 20 ) if using a Solid State Relay.
temperature_control.module_name.heater_pin 2.7 Pin that controls the heater. This can be used to control a Mosfet on board or an external Solid State Relay. Set to nc if a readonly thermistor is being defined
temperature_control.module_name.thermistor EPCOS100K Set the thermistor model for this module. Several different common models are pre-defined, see here for a list
temperature_control.module_name.beta 4066 Manually set the beta value for your thermistor. This is useful if your thermistor is not in the common pre-defined models.
temperature_control.module_name.r0 100000 Manually set the r0 resistance value for your thermistor. This is useful if your thermistor is not in the common pre-defined models. Besides beta and r0 which are properties of your thermistor, you can also set the r1, r2 and t0 values, but those are properties of your board so they usually never have to be changed.
temperature_control.module_name.get_m_code 105 Calling this M-code will return the current temperature.
temperature_control.module_name.set_m_code 104 This is the M-code for simply setting the temperature. For example here, the value is 104 so you use M104 S50 to set this module's heater's temperature to 50.
temperature_control.module_name.set_and_wait_m_code 109 This is the M-code for setting the temperature then waiting for that temperature to be reached before doing anything. For example here, the value is 109 so you use M109 S50 to set this module's heater's temperature to 50 and then wait.
temperature_control.module_name.designator T The letter this module's temperature will be identified as in the M105 command's answer. For example here the value is T, so M105 will answer ok T:23.4 /0.0 @0
temperature_control.module_name.p_factor 13.7 P factor for PID temperature regulation
temperature_control.module_name.i_factor 0.097 I factor for PID temperature regulation
temperature_control.module_name.d_factor 24 D factor for PID temperature regulation
temperature_control.module_name.max_pwm 64 Maximum PWM value for the heating element. This can be from 0 to 255 . 64 is a good value if driving a 12v resistor with 24v. 255 is the default and the normal value if you are using the right voltage for your heating element.
temperature_control.module_name.bang_bang false Set to true to use bang bang control rather than PID
temperature_control.module_name.hysteresis 2.0 Set to the temperature in degrees C to use as hysteresis for bang bang control
temperature_control.module_name.i_max 64 Maximum value for the I variable in the PID control. This should usually be set to about the same value as max_pwm ( as a rule of thumb, it is not actually a pwm setting ). This helps with preventing overshoot when initially heating up. If you get a strong ( >10°C ) overshoot on startup, try setting this to a value lower than max_pwm
temperature_control.module_name.sensor thermistor Set the type of sensor used to read temperature. Values can be thermistor for the usual thermistor reading via ADC method, or max31855 to read values from a thermocouple over SPI. See Reading a thermocouple
temperature_control.module_name.chip_select_pin 0.16 If the sensor is set to max31855, sets the chip select pin for the SPI port. This allows you to have multiple sensors sharing the same SPI port, as long as they each get a chip select ( CS ) pin.
temperature_control.module_name.spi_channel 0 If the sensor is set to max31855, SPI channel using which to talk to the thermocouple chip.
temperature_control.module_name.max_temp 100 If set, no temperature above this will be accepted and if the temperature exceeds this value the system will be forced into a HALT state.
temperature_control.module_name.runaway_heating_timeout 120 If we take longer than this many seconds to heatup, the system will be forced into a HALT state. Set to 0 to disable it. default is 900 seconds
temperature_control.module_name.runaway_range 20 If set to non-zero, and the target temperature is reached, and temperature diverges from the target temperature by more than this, the system will be forced into a HALT state.