Javascript / Expressions

Allows Gcode to execute javascript. Please note the German version is the original!

General

Save variable: [var start_x = 5;] Use of variable: G0 X[start_x]

Calculate:G0 X[50+22.5] Y[50/10]Calculate:G0 X[Math.sin(90 * Math.PI / 180)]

Functions

Functions must always be in one line. The easiest way to achieve this is a minifier .

function runHello(number) {
dialog.addInfo("Hello World " + number);
dialog.show();
return;
}

becomes

function runHello(o){dialog.addInfo("Hello World "+o),dialog.show()}

If you now want to execute these lines, type :

[function runHello(o){dialog.addInfo(“Hello World “+o),dialog.show()}]
[runHello(255)]

into the Gcode input
A dialog with “Hello World 255” should appear.

Dialogue

The dialog extension allows the user to display information as well as create input fields.

• dialog.addInfo(info)

String : info

• dialog.addInput(variable,inputname)

String : variable
String : inputname

variable specifies the name in which the input value is stored. Bspdialog.addInput(“x”,”max X: “). Shows “max X:” as an input field and saves the value using var x = value.

• dialog.addInput(variable,inputname,default)

String : variable
String : inputname
String : default

As above, only a default value is displayed.

• dialog.show( )

Shows the dialog. When closing, possible variables are set and info/input fields are deleted.

Save

The save extension allows the user to save custom variables permanently. These are loaded when the software is started.

• data.save(variable,value)

String : variable
String: value

Example: var x = 55;and with data.save(“test”,x) the value 55 for test is saved in the permanent file. The variable test is not created directly, var test = 55 is only executed with data.load().

• data.load()

Loads all variables stored in the permanent file.

Variables

Variables that correspond to the settings of the milling machine. Changing these variables does not change anything in the real settings.

• machine.x
• machine.y
• machine.z

Machine width(x)/ length(y) / height(z) positive values ​​

• last_probe_.x
• last_probe_.y
• last_probe_.z
• last_probe_.valid

X/Y/Z position of last probe operation, valid indicates if probe is valid.

• toolchange.x
• toolchange.y
• toolchange.z
• toolchange.enable

Tool change position stored in settings/gcode. enable indicates whether the tool change is activated.

Examples:

length sensor / probe

Performs a probe towards minimum Z height. The variable machine.z is used for this. The sample position is displayed in a dialog.

G90
G38.2Z[-machine.z] F100
[dialog.addInfo("Probe X:" + last_probe_.x + " Y:" + last_probe_.y + " Z:" + last_probe_.z )]
[dialog.show()]

Timekeeping

Measures the time how long a Gcode took and gives a dialog at the end showing the total time taken as from the current file. The code must be inserted in the settings/Gcode pre and post Gcode

[var start_time = new Date();]

[var end_time = new Date();]
[var timeDiff = end_time - start_time; //in ms]
[ var time_string = new Date(timeDiff ).toISOString().substr(11, 8)]
[dialog.addInfo("The file required " + time_string + " ")][var gcode_time = gcode_time ? gcode_time + timeDiff : timeDiff]
[ var time_string = new Date(gcode_time ).toISOString().substr(11, 8)]
[dialog.addInfo("Total Gcode time " + time_string + " ")]
[dialog.show()]
[data.save("gcode_time",gcode_time)]

Dialog / Customizable Gcode

In this example, the user is prompted for the width and height of a rectangle. This is followed after clicking Next.

[dialog.addInfo("This Gcode is traversing a rectangle.")]
[dialog.addInput("r_width","Width: ","50")]
[dialog.addInput("r_heigth","Height: ","25")]
[dialog.show()]
M0
G0 G91 X[r_width]
G0 G91 Y[r_height]
G0 G91 X[-r_width]
G0 G91 Y[-r_height]

More ideas

Detect if the tool has been damaged : When the cutter is measured, store the Z value and measure again after use and compare the value. If the value deviates too much, move to a safe position, stop the spindle and pause with M0. This could be inserted directly into the ToolGcode for an automatic tool change spindle.

Time measurements: how long was the cutter used /how long did the milling process take

Save your todo list for next time.

Tap: Set to zero probe is run in Z X Y.

If further variables or options are desired, mail to office@minimill.at