diff --git a/webserial/src/editor/defaultCode.ts b/webserial/src/editor/defaultCode.ts
index ed40918..03cbd9f 100644
--- a/webserial/src/editor/defaultCode.ts
+++ b/webserial/src/editor/defaultCode.ts
@@ -4,12 +4,19 @@
 // Fixtures library. TODO move this into a separate file
 
 class Fixture {
-    address: number
-    ctx: Context
+    startAddress: number
 
-    constructor(address: number, ctx: Context) {
-        this.address = address;
-        this.ctx = ctx;
+    constructor(startAddress: number) {
+        this.startAddress = startAddress;
+    }
+
+    /**
+     * Write to a DMX channel
+     * @param address Address offset (1 = start address)
+     * @param value between 0 and 255
+     */
+    setChannel(address: number, value: number) {
+        ctx.set(this.startAddress + address - 1, value);
     }
 }
 
@@ -27,42 +34,43 @@ interface GenericRGBW {
 class Par extends Fixture implements GenericRGBW {
     setBrightness(value: number, strobe?: boolean) {
         if (strobe || false) {
-            this.ctx.set(this.address, 255);
-            this.ctx.set(this.address + 7, value * 255);
+            this.setChannel(1, 255);
+            this.setChannel(8, value * 255);
         } else {
-            this.ctx.set(this.address, value * 255);
-            this.ctx.set(this.address + 7, 0);
+            this.setChannel(1, value * 255);
+            this.setChannel(8, 0);
         }
     }
 
     setRGBW(rgb: [number, number, number], w?: number) {
         let [r, g, b] = rgb;
-        this.ctx.set(this.address + 1, r);
-        this.ctx.set(this.address + 2, g);
-        this.ctx.set(this.address + 3, b);
-        this.ctx.set(this.address + 4, w || 0);
+        this.setChannel(2, r);
+        this.setChannel(3, g);
+        this.setChannel(4, b);
+        this.setChannel(5, w || 0);
     }
 
     setAUV(a: number, uv: number) {
-        this.ctx.set(this.address + 5, a);
-        this.ctx.set(this.address + 6, uv);
+        this.setChannel(6, a);
+        this.setChannel(7, uv);
     }
 }
 
 class MovingHead extends Fixture implements GenericRGBW {
     setBrightness(value: number, strobe?: boolean) {
-        let out = (strobe || false)
+        let val = (strobe || false)
             ? 135 + (239 - 135) * value
             : 8 + (134 - 8) * value;
-        this.ctx.set(this.address + 5, out);
+
+        this.setChannel(6, val);
     }
 
     setRGBW(rgb: [number, number, number], w?: number) {
         let [r, g, b] = rgb;
-        this.ctx.set(this.address + 6, r);
-        this.ctx.set(this.address + 7, g);
-        this.ctx.set(this.address + 8, b);
-        this.ctx.set(this.address + 9, w || 0);
+        this.setChannel(7, r);
+        this.setChannel(8, g);
+        this.setChannel(9, b);
+        this.setChannel(10, w || 0);
     }
 
     /**
@@ -82,20 +90,59 @@ class MovingHead extends Fixture implements GenericRGBW {
         let panFine = 0
         let tiltFine = 0
 
-        this.ctx.set(this.address + 0, panRough);
-        this.ctx.set(this.address + 1, panFine);
-        this.ctx.set(this.address + 2, tiltRough);
-        this.ctx.set(this.address + 3, tiltFine);
-        this.ctx.set(this.address + 4, speed || 0);
+        this.setChannel(1, panRough);
+        this.setChannel(2, panFine);
+        this.setChannel(3, tiltRough);
+        this.setChannel(4, tiltFine);
+        this.setChannel(5, speed || 0);
     }
 }
 
+class Flower extends Fixture implements GenericRGBW {
+
+    setBrightness(value: number, strobe?: boolean): void {
+        // dimmer seems unsupported :(
+        this.setChannel(7, (strobe || false) ? 255 * value : 0);
+    }
+
+    setRGBW(rgb: [number, number, number], w?: number): void {
+        const [r, g, b] = rgb;
+        this.setChannel(1, r);
+        this.setChannel(2, g);
+        this.setChannel(3, b);
+        this.setChannel(4, w || 0);
+    }
+
+    setAP(a: number, p: number) {
+        this.setChannel(5, a);
+        this.setChannel(6, p);
+    }
+
+    /**
+     * Set the rotation speed
+     * @param speed Between -1 (clockwise) and 1 (counterclockwise)
+     */
+    setRotation(direction: number) {
+        const val = (direction < 0)
+            ? /* clockwise        */ lib.remap(direction, [0, -1], [0, 128], true)
+            : /* counterclockwise */ lib.remap(direction, [0, 1], [129, 255], true);
+
+        this.setChannel(8, val);
+    }
+
+    setMacro(pattern: number, speed: number) {
+        this.setChannel(9, pattern);
+        this.setChannel(10, speed);
+    }
+
+}
+
 // ******************
 // * CODE GOES HERE *
 // ******************
 
 let color = lib.hsl2rgb(360 * t, 100, 50);
 
-let par = new Par(1, ctx);
+let par = new Par(1);
 par.setBrightness(1);
 par.setRGBW(color);
\ No newline at end of file
diff --git a/webserial/src/editor/defaultEnv.d.ts b/webserial/src/editor/defaultEnv.d.ts
index 9d7cbfd..252c7d4 100644
--- a/webserial/src/editor/defaultEnv.d.ts
+++ b/webserial/src/editor/defaultEnv.d.ts
@@ -23,7 +23,18 @@ type Lib = {
     * @param s between 0 and 100
     * @param l between 0 and 100
     */
-    hsl2rgb(h: number, s: number, l: number): [number, number, number]
+    hsl2rgb(h: number, s: number, l: number): [number, number, number],
+
+    clamp(value: number, boundaries: [number, number]),
+
+    /**
+     * Map a value from one range to the other
+     * @param value to be remapped. Does not need to be in the source range.
+     * @param from [lower, upper] boundaries of source range.
+     * @param to [lower, upper] boundaries of target range.
+     * @param clamp clamp the output to the target range boundaries
+     */
+    remap(value: number, from: [number, number], to: [number, number], clamp?: boolean),
 }
 
 /** The standard library */
diff --git a/webserial/src/eval/lib.ts b/webserial/src/eval/lib.ts
index 6f1f18b..19c72f6 100644
--- a/webserial/src/eval/lib.ts
+++ b/webserial/src/eval/lib.ts
@@ -1,16 +1,42 @@
 /// <reference path="../editor/defaultEnv.d.ts" />
 
-export const lib: Lib = {
-    hsl2rgb(h, s, l): [number, number, number] {
-        // https://stackoverflow.com/a/44134328
-        l /= 100;
-        const a = s * Math.min(l, 1 - l) / 100;
-        const f = n => {
-            const k = (n + h / 30) % 12;
-            const color = l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1);
-            return Math.round(255 * color)
-        };
-        return [f(0), f(8), f(4)];
+function hsl2rgb(h, s, l): [number, number, number] {
+    // https://stackoverflow.com/a/44134328
+    l /= 100;
+    const a = s * Math.min(l, 1 - l) / 100;
+    const f = n => {
+        const k = (n + h / 30) % 12;
+        const color = l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1);
+        return Math.round(255 * color)
+    };
+    return [f(0), f(8), f(4)];
 
-    },
+}
+
+function clamp(value: number, boundaries: [number, number]) {
+    let [l, r] = boundaries;
+    return Math.max(l, Math.min(value, r));
+}
+
+const _clamp = clamp;
+
+function remap(value: number, from: [number, number], to: [number, number], clamp?: boolean) {
+    const [a, b] = from;
+    const normalized = (value - a) / (b - a);
+
+    const [c, d] = to;
+    let remapped = c + (d - c) * normalized;
+
+    if (clamp) {
+        remapped = _clamp(remapped, to)
+    };
+
+    return remapped;
+}
+
+
+export const lib: Lib = {
+    hsl2rgb: hsl2rgb,
+    clamp: clamp,
+    remap: remap,
 }
\ No newline at end of file