diff --git a/src/pattern.rs b/src/pattern.rs
index 3f64837..3daf65a 100644
--- a/src/pattern.rs
+++ b/src/pattern.rs
@@ -25,7 +25,7 @@ pub enum Parameters {
     MovingRainbow(u8, bool),
     Orb(Rgb, u8, u8),
     Solid((Rgb,)),
-    Flashing(Vec<Rgb>, u8),
+    Flashing(Vec<Rgb>, u8, u16),
 }
 
 impl Parameters {
@@ -37,7 +37,7 @@ impl Parameters {
             Self::MovingRainbow(w, f) => Box::new(MovingRainbow::new(w, f)),
             Self::Orb(c, x, y) => Box::new(Orb::new(c, x, y)),
             Self::Solid((c,)) => Box::new(Solid::new(c)),
-            Self::Flashing(cs, w) => Box::new(Flashing::new(cs, w)),
+            Self::Flashing(cs, w, r) => Box::new(Flashing::new(cs, w, r)),
         }
     }
 }
diff --git a/src/pattern/flashing.rs b/src/pattern/flashing.rs
index 0ad6b09..18933a8 100644
--- a/src/pattern/flashing.rs
+++ b/src/pattern/flashing.rs
@@ -9,13 +9,17 @@ use std::{
 pub struct Flashing {
     lights_buf: VecDeque<Rgb>,
     width: u8,
+    step: u16,
+    tick_rate: u16,
     colors: Vec<Rgb>,
 }
 
 impl Flashing {
-    pub fn new(colors: Vec<Rgb>, width: u8) -> Self {
+    pub fn new(colors: Vec<Rgb>, width: u8, tick_rate: u16) -> Self {
         Self {
             colors,
+            tick_rate,
+            step: 0,
             width,
             lights_buf: VecDeque::new(),
         }
@@ -24,17 +28,23 @@ impl Flashing {
 
 impl Pattern for Flashing {
     fn step(&mut self) -> Result<bool, ()> {
+        self.step = self.step.wrapping_add(1).rem_euclid(self.tick_rate);
+        if self.step != 0 {
+            return Ok(false);
+        }
         self.lights_buf.rotate_right(self.width.into());
         Ok(true)
     }
     fn init(&mut self, num_lights: u16) -> Result<(), ()> {
-        if num_lights == 0 {
+        if num_lights < 1 {
             return Err(());
         }
         let length_factor = num_lights.saturating_mul(u16::from(self.width));
 
         let buf_length = color::min_with_factor(num_lights, length_factor)?;
 
+        self.step = 0;
+
         self.lights_buf = self
             .colors
             .iter()
@@ -42,6 +52,7 @@ impl Pattern for Flashing {
             .cycle()
             .take(buf_length.into())
             .collect();
+
         Ok(())
     }
     fn get_strip(&self) -> vec_deque::Iter<Rgb> {
diff --git a/web/package-lock.json b/web/package-lock.json
index 070355b..8c7eaa3 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -1,8 +1,1348 @@
 {
   "name": "svelte-app",
   "version": "1.0.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 2,
   "requires": true,
+  "packages": {
+    "": {
+      "name": "svelte-app",
+      "version": "1.0.0",
+      "dependencies": {
+        "sirv-cli": "^1.0.0"
+      },
+      "devDependencies": {
+        "@rollup/plugin-commonjs": "^17.0.0",
+        "@rollup/plugin-node-resolve": "^11.0.0",
+        "@rollup/plugin-typescript": "^8.0.0",
+        "@tsconfig/svelte": "^2.0.0",
+        "rollup": "^2.3.4",
+        "rollup-plugin-css-only": "^3.1.0",
+        "rollup-plugin-livereload": "^2.0.0",
+        "rollup-plugin-svelte": "^7.0.0",
+        "rollup-plugin-terser": "^7.0.0",
+        "svelte": "^3.0.0",
+        "svelte-check": "^2.0.0",
+        "svelte-preprocess": "^4.0.0",
+        "tslib": "^2.0.0",
+        "typescript": "^4.0.0"
+      }
+    },
+    "node_modules/@babel/code-frame": {
+      "version": "7.14.5",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.14.5.tgz",
+      "integrity": "sha512-9pzDqyc6OLDaqe+zbACgFkb6fKMNG6CObKpnYXChRsvYGyEdc7CA2BaqeOM+vOtCS5ndmJicPJhKAwYRI6UfFw==",
+      "dev": true,
+      "dependencies": {
+        "@babel/highlight": "^7.14.5"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-validator-identifier": {
+      "version": "7.14.9",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.9.tgz",
+      "integrity": "sha512-pQYxPY0UP6IHISRitNe8bsijHex4TWZXi2HwKVsjPiltzlhse2znVcm9Ace510VT1kxIHjGJCZZQBX2gJDbo0g==",
+      "dev": true,
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/highlight": {
+      "version": "7.14.5",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.14.5.tgz",
+      "integrity": "sha512-qf9u2WFWVV0MppaL877j2dBtQIDgmidgjGk5VIMw3OadXvYaXn66U1BFlH2t4+t3i+8PhedppRv+i40ABzd+gg==",
+      "dev": true,
+      "dependencies": {
+        "@babel/helper-validator-identifier": "^7.14.5",
+        "chalk": "^2.0.0",
+        "js-tokens": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@polka/url": {
+      "version": "1.0.0-next.15",
+      "resolved": "https://registry.npmjs.org/@polka/url/-/url-1.0.0-next.15.tgz",
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+    },
+    "node_modules/@rollup/plugin-commonjs": {
+      "version": "17.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-commonjs/-/plugin-commonjs-17.1.0.tgz",
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+      "dev": true,
+      "dependencies": {
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+        "commondir": "^1.0.1",
+        "estree-walker": "^2.0.1",
+        "glob": "^7.1.6",
+        "is-reference": "^1.2.1",
+        "magic-string": "^0.25.7",
+        "resolve": "^1.17.0"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      },
+      "peerDependencies": {
+        "rollup": "^2.30.0"
+      }
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+      "dev": true,
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+        "@types/resolve": "1.17.1",
+        "builtin-modules": "^3.1.0",
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+        "resolve": "^1.19.0"
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+      },
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+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/tslib": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.3.0.tgz",
+      "integrity": "sha512-N82ooyxVNm6h1riLCoyS9e3fuJ3AMG2zIZs2Gd1ATcSFjSA23Q0fzjjZeh0jbJvWVDZ0cJT8yaNNaaXHzueNjg==",
+      "dev": true
+    },
+    "node_modules/typescript": {
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz",
+      "integrity": "sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==",
+      "dev": true,
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=4.2.0"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    },
+    "node_modules/ws": {
+      "version": "7.5.3",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.3.tgz",
+      "integrity": "sha512-kQ/dHIzuLrS6Je9+uv81ueZomEwH0qVYstcAQ4/Z93K8zeko9gtAbttJWzoC5ukqXY1PpoouV3+VSOqEAFt5wg==",
+      "dev": true,
+      "engines": {
+        "node": ">=8.3.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": "^5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    }
+  },
   "dependencies": {
     "@babel/code-frame": {
       "version": "7.14.5",
@@ -956,7 +2296,8 @@
       "version": "7.5.3",
       "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.3.tgz",
       "integrity": "sha512-kQ/dHIzuLrS6Je9+uv81ueZomEwH0qVYstcAQ4/Z93K8zeko9gtAbttJWzoC5ukqXY1PpoouV3+VSOqEAFt5wg==",
-      "dev": true
+      "dev": true,
+      "requires": {}
     }
   }
 }
diff --git a/web/src/Form.svelte b/web/src/Form.svelte
index a0a182c..27793d3 100644
--- a/web/src/Form.svelte
+++ b/web/src/Form.svelte
@@ -28,12 +28,8 @@
 		]},
 		{name: "Flashing", text: "Flashing", formElements: [
 			{name: "color",	type: "colors",	label: "Color",	value: []},
-			// {name: "color", type: "color", label: "Color1", value: "#000000"},
-			// {name: "color", type: "color", label: "Color2", value: "#000000"},
-			// {name: "color", type: "color", label: "Color3", value: "#000000"},
-			// {name: "color", type: "color", label: "Color4", value: "#000000"},
-			// {name: "color", type: "color", label: "Color5", value: "#000000"},
 			{name: "width",	type: "number",	label: "Width",	value: "1"},
+			{name: "tick_rate", type: "number", label: "Tick Rate", value: 8},
 		]},
 	];
 	let selectedPattern = possiblePatterns[0];