# p5-wallplotter

p5.js library for a Marlin polargraph (wall plotter) over Web Serial, plus a zigzag example.

**Anleitung** (Download, Linux/Windows/macOS, USB, Marlin/G-code): [tutorial.md](tutorial.md). Hardware: [hardware.md](hardware.md). G-code: [gcode.md](gcode.md).

```
p5-wallplotter/
├── tutorial.md          # setup + plotter + G-code
├── hardware.md          # motors, board, geometry
├── gcode.md             # G-code used by this setup
├── lib/
│   ├── WallPlotter.js   # library
│   ├── README.md        # short intro + example
│   └── doc.md           # full API
└── examples/
    ├── zickzack/        # example sketch
    └── rechteck/        # rectangle sketch
```

## Run the example

Chrome or Edge. Serve over localhost (Web Serial does not work from `file://`).

```bash
cd p5-wallplotter
python -m http.server 8080
```

Open http://localhost:8080/examples/zickzack/

Press **C** to connect, **H** to set home, then **Test** (preview) or **Plot** (send G-code).

## Use in a sketch

```html
<script src="https://cdn.jsdelivr.net/npm/p5@1.11.3/lib/p5.min.js"></script>
<script src="../../lib/WallPlotter.js"></script>
<script src="sketch.js"></script>
```

```javascript
let wp;

function setup() {
  createCanvas(windowWidth, windowHeight).parent('sketch-host');
  wp = new WallPlotter();
  wp.setSpeed(3000, 1500);
  wp.enableKeyInputs();
  wp.enablePlotButtons();
}

function draw() {
  background(28, 28, 32);
  wp.showInfos();
}

async function plot() {
  await drawPlot(false);
}

async function test() {
  await drawPlot(true);
}

async function drawPlot(testOnly) {
  wp.startPath();
  wp.move(-200, -200);
  wp.draw(200, -200);
  await wp.runPath(testOnly);
}
```

Full API: [lib/doc.md](lib/doc.md).

Baud **115200**. Pen servo: `M280 P0 S90` up, `M280 P0 S50` down. Coordinates in mm, origin at home (`G92`).