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This is applied to any homing command, even if it doesn't home the Z axis. The default is to not implement Z hop. The default is False. If a G28 is contained in this list of commands then it will invoke the normal homing procedure for the printer. The commands listed here must home all axes. For example, if this is set to "z" then the override script will only be run when the z axis is homed eg, via a "G28" or "G28 Z0" command. Note, the override script should still home all axes.
The default is "xyz" which causes the override script to be run in place of all G28 commands. Setting this disables homing checks for that axis. This may be useful if the head must move prior to invoking the normal G28 mechanism for an axis. The default is to not force a position for an axis. This represents the maximum error distance the endstop may trigger eg, if an endstop may occasionally trigger um early or up to um late then set this to 0.
Only set this value if one is sure the stepper motor driver is reset every time the mcu is reset. If this is not set, then the stepper phase will be detected on the first home and that phase will be used on all subsequent homes. If used on the Z axis and the print layer height is a multiple of a full step distance then every layer will occur on a full step. The given variable name will be assigned the given value parsed as a Python literal and will be available during macro expansion.
Variable names may not use upper case characters. This can be used to override builtin G-Code commands. Care should be taken when overriding commands as it can cause complex and unexpected results. The default is to not override an existing G-Code command. Default "G-Code macro". G-Code templates are supported. The default is seconds. This is a read-only directory sdcard file writes are not supported. The default is false. Default is The default is 0 mm.
Each segment's length will equal the resolution in mm set above. Lower values will produce a finer arc, but also more work for your machine. Arcs smaller than the configured value will become straight lines. The default is 1mm. This is usually a resonance frequency of X axis that the input shaper should suppress.
For more complex shapers, like 2- and 3-hump EI input shapers, this parameter can be set from different considerations. The default value is 0, which disables input shaping for X axis. This is usually a resonance frequency of Y axis that the input shaper should suppress. The default value is 0, which disables input shaping for Y axis. The default is mzv input shaper.
Default value is 0. In most circumstances this parameter requires no tuning and should not be changed. This may be useful if the accelerometer is mounted in an orientation that does not match the printer orientation. For example, one could set this to "y, x, z" to swap the X and Y axes. It is also possible to negate an axis if the accelerometer direction is reversed eg, "x, z, -y". The default is "x, y, z".
ADXL supports the following data rates: , , , , , , 50, and Note that it is not recommended to change this rate from the default , and rates below will considerably affect the quality of resonance measurements. At least one point is required. Either this, or the next two parameters must be set.
Can be useful, for instance, on bed slinger printer, if two separate accelerometers are mounted on the bed for Y axis and on the toolhead for X axis. By default no maximum smoothing is specified. The default is 5 Hz. The default is Hz. Higher the value, the higher is the energy of the oscillations. Can be set to a lower than the default value if the resonances get too strong on the printer. However, lower values make measurements of high-frequency resonances less precise. Small values make the test slow, and the large values will decrease the precision of the test.
The default value is 1. The default is to apply the aliases to the main "mcu". If the pin is on a different microcontroller than the Z steppers then it enables "multi-mcu homing".
The default is True. The probed z-values will be averaged. The default is to probe 1 time. The default is 2mm. The default is to use the same value as the 'speed' parameter. The default is average. On a retry, all current samples are discarded and the probe attempt is restarted.
If a valid set of samples are not obtained in the given number of retries then an error is reported. This may be useful if the probe needs to be activated in some way. Do not issue any commands here that move the toolhead eg, G1. The default is to not run any special G-Code commands on activation. Do not issue any commands here that move the toolhead. The default is to not run any special G-Code commands on deactivation. This should be True for all genuine BLTouch devices. This setting should not be used on other types of probes.
Set to "5V" to request a sensor pin output of 5 Volts only use if the controller board needs 5V mode and is 5V tolerant on its input signal line. Set to "OD" to request the sensor pin output use open drain mode. The default is to not request an output mode. Otherwise, the stepper will home until the endstop on the primary stepper for the axis is triggered.
See the "extruder" section for available stepper and heater parameters. The default is to not reuse an existing heater. The default is "extruder". An acceleration of zero will result in no acceleration. Smaller values result in stricter checking and larger values allow for more time before an error is reported.
Specifically, the temperature is inspected once a second and if it is close to the target temperature then an internal "error counter" is reset; otherwise, if the temperature is below the target range then the counter is increased by the amount the reported temperature differs from that range.
Specifically, during initial heating, as long as the heater increases in temperature within this time frame specified in seconds then the internal "error counter" is reset.
It is rare to customize this value. The default is 2. The default is to disable all heaters. The three measurements will be used to calculate the Steinhart-Hart coefficients for the thermistor. These parameters must be provided when using Steinhart-Hart to define the thermistor. This parameter must be provided when using "beta" to define the thermistor. A set of temperatures in Celsius and voltages in Volts to use as reference when converting a temperature.
At least two measurements must be provided. Alternatively one may specify a set of temperatures in Celsius and resistance in Ohms to use as reference when converting a temperature. It is rare to set this. The default is 0 ohms. The default is 5 volts. The defaults for each parameter are next to the parameter name in the above list.
Some BME sensors have an address of 0x If True no other bus communication can be performed while reading is in progress. Default is False. Normal range is 0xx4F and the 3 low bits of the address are configured via pins on the chip usually with jumpers or hard wired. The default is "mcu".
This may improve the reported temperature accuracy on some chips. Use some other temperature sensor on the printer to find the corresponding ambient temperature. The default is to use the factory calibration data on the micro-controller if applicable or the nominal values from the micro-controller specification. Doing so may provide calibrated "temperature slope" information. Default is 3. This setting may be used to limit the total power output over extended periods to the fan. If this value is less than 1.
It is recommended this be 10 milliseconds or greater when using software based PWM. Most fans do not work well with hardware PWM, so it is not recommended to enable this unless there is an electrical requirement to switch at very high speeds. This setting may be used to prevent fan stalls and to ensure kick starts are effective. Gradually lower the fan speed to determine the lowest input speed which reliably drives the fan without stalls. A pullup is generally required. This parameter is optional.
For a BLDC fan this is normally half the number of poles. If a comma separated list of heater names is provided here, then the fan will be enabled when any of the given heaters are enabled. The default is 50 Celsius. The default is 30 seconds. The default heater is "extruder", the default stepper is all of them.
The default is 40 degrees. The default is to not report the temperature via M The default is degrees. This should correspond with an angle of 0 degrees.
The default is to not send any signal at startup. The default is 1 which indicates only a single Neopixel is connected to the pin. The default is GRB. Each value should be between 0. The default for each color is 0. On the mightyboard, the white led is not populated. The default is to use digital gpio for the button. The default is to not run any commands on a button release. If this is true, the value fields should be between 0 and 1; if it is false the value fields should be either 0 or 1.
A static pin uses slightly less ram in the micro-controller. The default is to use runtime configuration of pins. The default is 0 for low voltage. If host can not keep up with an update, the MCU will shutdown and set all pins to their respective shutdown values.
Default: 0 disabled Usual values are around 5 seconds. If provided, then the 'value' parameter should be between 0. This may be useful when configuring a PWM pin that controls a stepper voltage reference. The 'scale' can be set to the equivalent stepper amperage if the PWM were fully enabled, and then the 'value' parameter can be specified using the desired amperage for the stepper.
The default is to not scale the 'value' parameter. The pin will be set to a high level unless the pin name is prefaced with "! This pin will be set to low at the start of SPI messages and raised to high after the message completes. The two parameters define the stepper position in the chain and the total chain length. Position 1 corresponds to the stepper that connects to the MOSI signal. The default is to not use an SPI daisy chain.
The default is to not reduce the current. When set, "stealthChop" mode will be enabled if the stepper motor velocity is below this value. The default is 0, which disables "stealthChop" mode. This may be used to set custom motor parameters. Only a single diag pin should be specified. Doing this enables "sensorless homing". The default is to not enable sensorless homing. This may be useful for configuring an analog mux for UART communication.
The default is to not configure any pins. This pin will be set to low at the start of SPI messages and set to high after the message transfer completes. This only works if microsteps is set to The current will be raised again once the stepper has to move again.
Make sure to set this to a high enough value such that the steppers do not lose their position. There is also small delay until the current is raised again, so take this into account when commanding fast moves while the stepper is idling. The default is no reduction. This may be used to set custom driver parameters. The defaults for each parameter are next to the parameter name in the list above. See the TMC datasheet about what each parameter does and what the restrictions on parameter combinations are.
This is typically set to a number between 0. However, the range may be changed with the 'scale' parameter see below. If a channel is not specified then it is left unconfigured. This may be useful when the AD is used to set stepper voltage references. If a wiper is not specified then it is left unconfigured. This may be useful when the MCP is used to set stepper voltage references. The 'scale' can be set to the equivalent stepper amperage if the MCP were at its highest voltage 2.
If provided, then the 'wiper' parameter should be between 0. The 'scale' can be set to the equivalent stepper amperage if the MCP is at its highest resistance, and then the 'wiper' parameter can be specified using the desired amperage value for the stepper. The default is to not scale the 'wiper' parameter.
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