openjscam

A TPLang inspired JavaScript to G-Code preprocessor in pure JavaScript.

installation

OpenJSCAM can be installed using any node package manager, in this example we will use npm.

npm install --save openjscam

You can also grab the bundle.js file in the root of the project, which contains the code + dependencies all together in one file. It puts all the openjscam functions on the window.openjscam property, this is usefull for running it in the browser.

usage

You can add openjscam as a dependency to you project, then import the functions you need, or make all of them available in your scope by using the with (openjscam) {} operator

Example using require:

const {
    rapid,
    cut,
    icut,
    log
} = require('openjscam')

const zSafe = 3
const zCut = -1.5

rapid({ z: zSafe })
rapid({ x: 0, y: 0 })
cut({ z: zCut })
cut({ y: 100 })
cut({ x: 100 })
cut({ y: -100 })
cut({ x: -100 })
rapid({ z: zSafe })
log()

Example using with (openjscam) {}

const openjscam = require('openjscam')

// by using `with`, all properties of the `openjscam` object are automatically available in it's scope.
with (openjscam) {
    const zSafe = 3
    const zCut = -1.5

    rapid({ z: zSafe })
    rapid({ x: 0, y: 0 })
    cut({ z: zCut })
    cut({ y: 100 })
    cut({ x: 100 })
    cut({ y: -100 })
    cut({ x: -100 })
    rapid({ z: zSafe })
    log()
}

api

units(units: METRIC | IMPERIAL)

Set the units (Will output G21 for METRIC or G20 for IMPERIAL)

example

const { units, METRIC, log } = require('openjscam')
units(METRIC)
log()

output

G21

tool(tool: number)

Set the tool to use (usefull when having a tool changer)

NOT IMPLEMENTED YET

example

const { tool, log } = require('openjscam')
tool(1)
log()

feed(feedRate: number)

Set the feedrate

example

const { feed, log } = require('openjscam')
feed(200)
log()

output

F200

speed(speed: number)

Set the spindle speed (in RPM)

example

const { speed, log } = require('openjscam')
speed(25000)
log()

output

M3 S25000

dwell(duration: number)

Pause for given duration, duration is given in seconds

example

const { dwell, log } = require('openjscam')
dwell(0.5)
log()

output

G4 P0.5

cut(coordinate: Coordinate, incremental: boolean = false)

Linear movement to given coordinate. A Coordinate is an object with x, y, z properties. Provide a coordinate for at least one of the axes.

example

const { cut, log } = require('openjscam')
cut({ x: 10, y: 10 })
log()

output

Note that the feedrate will be set using our previous call to feed(200), when no feedrate is set yet, an error will be thrown

G1 X10 Y10

icut(offset: Coordinate, incremental: boolean = true)

Incremental linear movement to given offset from last coordinate. A Coordinate is an object with x, y, z properties. Provide a coordinate for at least one of the axes.

example

const { icut, log } = require('openjscam')
icut({ x: 10, y: 10 })
log()

output

Note that we assumed the last point was X10 Y10 from the previous example.

G1 X20 Y20

rapid(coordinate: Coordinate, incremental: boolean = false)

Rapid movement to given coordinate. A Coordinate is an object with x, y, z properties. Provide a coordinate for at least one of the axes.

example

const { rapid, log } = require('openjscam')
rapid({ x: 10, y: 10 })
log()

output

G0 X10 Y10

irapid(offset: Coordinate, incremental: boolean = true)

Incremental rapid movement to given offset from last coordinate. A Coordinate is an object with x, y, z properties. Provide a coordinate for at least one of the axes.

example

const { irapid, log } = require('openjscam')
irapid({ x: 10, y: 10 })
log()

output

Note that we assumed the last point was X10 Y10 from the previous example.

G0 X20 Y20

arc(offset: Coordinate, angle: number)

Create an arc from with a given offset from the last point and an angle in degrees.

example

const { arc, log } = require('openjscam')
arc({ x: 10 }, 180)
log()

output

Note that we assumed the last point was X0 Y0

G2 X20 Y0 I10 J0 Z0

translate(offset: Coordinate, cb: Function)

Translate (move) child operations by given offset

example

const { translate, cut, log } = require('openjscam')
translate({ x: 100, y: 50 }, function () {
    cut({ x: 10, y: 10 })
})
log()

output

G1 X110 Y60

rotate(angle: number, cb: Function)

Rotate child operations by given angle in degrees

example

const { rotate, cut, log } = require('openjscam')
rotate(45, function () {
    cut({ x: 10, y: 10 })
})
log()

output

G1 X14.142 Y0 Z0

log()

Log the G-Code to the console

example

const { cut, log } = require('openjscam')
cut({ x: 10, y: 10 })
log()

output

G1 X10 Y10

save(path: string)

Save the G-Code to a file (only works in Node.JS)

example

const { cut, save } = require('openjscam')
cut({ x: 10, y: 10 })
save('/path/to/gcode/file.gcode')

gcode()

Returns the G-Code as an array of strings (lines)

example

const { cut, gcode } = require('openjscam')
cut({ x: 10, y: 10 })
var code = gcode()
// do something with the gcode