diff --git a/package.json b/package.json
index 08069f0..1b93a19 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "@types/mongoose": "^5.11.97",
     "@types/morgan": "^1.9.3",
     "@types/node": "^18.11.9",
+    "@types/rpi-gpio": "^2.1.1",
     "cookie-parser": "^1.4.6",
     "debug": "^4.3.4",
     "express": "~4.16.1",
@@ -27,7 +28,8 @@
     "http-errors": "~1.6.3",
     "mongoose": "^6.7.2",
     "morgan": "^1.10.0",
-    "pug": "2.0.0-beta11"
+    "pug": "2.0.0-beta11",
+    "rpi-gpio": "^2.1.7"
   },
   "devDependencies": {
     "@types/electron": "^1.6.10",
diff --git a/public/stylesheets/buttons.css b/public/stylesheets/buttons.css
index f8c4ab8..f96da48 100644
--- a/public/stylesheets/buttons.css
+++ b/public/stylesheets/buttons.css
@@ -1,11 +1,10 @@
 .btn {
     padding: 11px 15px;
     border: none;
-    cursor: pointer;
     color: white;
     font-size: 0.8em;
     border-radius: 2px;
-
+    cursor:none !important;
 }
 
 
diff --git a/public/stylesheets/style.css b/public/stylesheets/style.css
index 55c59bb..6845fe6 100644
--- a/public/stylesheets/style.css
+++ b/public/stylesheets/style.css
@@ -3,11 +3,26 @@
 @import url("/stylesheets/buttons.css");
 @import url("/stylesheets/modal.css");
 
+
+:root {
+    cursor: none;
+}
+
+
+html * {cursor: none !important}
+
+
+body::-webkit-scrollbar {
+    display: none;
+}
+
+
 body {
     color: white;
     scroll-behavior: smooth;
     font-family: "Roboto", serif;
     font-style: normal;
+    cursor: none;
 }
 
 
@@ -118,10 +133,13 @@ body {
     border-radius: 30px 10px 30px;
 }
 
+
 .drink .thumbnail {
     grid-column: span 1;
     grid-row: span 2;
 }
+
+
 .drink .name {
     grid-column: span 1;
     grid-row: span 1;
diff --git a/src/WebSocketHandler.ts b/src/WebSocketHandler.ts
new file mode 100644
index 0000000..b319489
--- /dev/null
+++ b/src/WebSocketHandler.ts
@@ -0,0 +1,33 @@
+import {WebSocketPayload} from "./WebSocketPayload";
+
+export class WebSocketHandler {
+    private static _ws: WebSocket;
+
+    static get ws(): WebSocket {
+        return this._ws;
+    }
+
+    static set ws(value: WebSocket) {
+        this._ws = value;
+    }
+
+    public static send(payload: WebSocketPayload): Promise<void> {
+        return new Promise(async (resolve, reject) => {
+            try {
+                if( this.ws && this.ws.readyState == 1 )
+                {
+                    await this.ws.send(payload.toString());
+                    resolve();
+                }
+                else
+                {
+                    reject("Websocket is not connected!");
+                }
+
+            } catch (e) {
+                reject(e);
+            }
+        });
+    }
+
+}
\ No newline at end of file
diff --git a/src/WebSocketPayload.ts b/src/WebSocketPayload.ts
index f487b06..147b6da 100644
--- a/src/WebSocketPayload.ts
+++ b/src/WebSocketPayload.ts
@@ -45,8 +45,17 @@ export class WebSocketPayload {
             return null;
         }
 
-        let wsEvent = WebSocketEvent[<keyof typeof WebSocketEvent> rawPayload.event];
+        let wsEvent = WebSocketEvent[<keyof typeof WebSocketEvent>rawPayload.event];
 
         return new WebSocketPayload(wsEvent, rawPayload.status, rawPayload.data);
     }
+
+    /**
+     * Returns the payload as base64 encoded json string
+     */
+    public toString(): string {
+        let json = JSON.stringify({"event": this._event, status: this._status, data: this._data});
+        json = (window) ? btoa(json) : Buffer.from(json).toString("base64");
+        return json;
+    }
 }
\ No newline at end of file
diff --git a/src/database/AbstractContainer.ts b/src/database/AbstractContainer.ts
deleted file mode 100644
index 32e9898..0000000
--- a/src/database/AbstractContainer.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-import {IContainer} from "./IContainer";
-import {IIngredient} from "./IIngredient";
-import {HCSR04} from "hc-sr04";
-
-export abstract class AbstractContainer implements IContainer {
-    slot: number = 1;
-    content: IIngredient | undefined;
-    sensorEcho: number = 26;
-    sensorFilledMax: number = 0;
-    sensorFilledMin: number = 0;
-    sensorTrigger: number = 27;
-    volume: number = 1000;
-    sensor: HCSR04;
-
-    protected constructor() {
-        this.sensor = new HCSR04(this.sensorTrigger, this.sensorEcho);
-    }
-
-    public measure() : Number {
-        let dist = this.sensor.distance();
-        return dist * 100 / (this.sensorFilledMax + this.sensorFilledMin);
-    }
-
-
-
-}
\ No newline at end of file
diff --git a/src/database/Container.ts b/src/database/Container.ts
index 60720de..ceb9b8f 100644
--- a/src/database/Container.ts
+++ b/src/database/Container.ts
@@ -1,17 +1,18 @@
 import * as Mongoose from "mongoose";
-import {AbstractContainer} from "./AbstractContainer";
 import mongoose from "mongoose";
+import {IContainer} from "./IContainer";
 
-export const ContainerSchema = new Mongoose.Schema<AbstractContainer>({
+export const ContainerSchema = new Mongoose.Schema<IContainer>({
     slot: {type: Number},
     volume: {type: Number, required: true, default: 1000},
     sensorEcho: Number,
     sensorTrigger: Number,
-    content: {type: String},
+    content: {type: mongoose.Types.ObjectId},
     sensorFilledMax: Number,
-    sensorFilledMin: Number
+    sensorFilledMin: Number,
+    filled: Number,
 });
 
-const Container = mongoose.model<AbstractContainer>('Container', ContainerSchema);
+const Container = mongoose.model<IContainer>('Container', ContainerSchema);
 export default Container;
 
diff --git a/src/database/Drink.ts b/src/database/Drink.ts
index a04fbfa..a57ec0d 100644
--- a/src/database/Drink.ts
+++ b/src/database/Drink.ts
@@ -4,7 +4,8 @@ import * as mongoose from "mongoose";
 export const DrinkSchema = new mongoose.Schema<IDrink>({
     name: {type: String, required: true},
     ingredients: [{type: {type: mongoose.Types.ObjectId, ref: "Ingredient", required: true}, amount: { type: Number } }],
-    category: String
+    category: String,
+    recommendedQuantity: {type: Number, default: 200 }
 });
 
 const Drink = mongoose.model<IDrink>('Drink', DrinkSchema);
diff --git a/src/database/IContainer.ts b/src/database/IContainer.ts
index 04cdef1..89bd656 100644
--- a/src/database/IContainer.ts
+++ b/src/database/IContainer.ts
@@ -1,7 +1,7 @@
 import {IIngredient} from "./IIngredient";
 import * as mongoose from "mongoose";
 
-export interface IContainer {
+export interface IContainer extends mongoose.Document{
     slot: number;
     content: IIngredient|undefined;
     volume: number;
@@ -9,4 +9,5 @@ export interface IContainer {
     sensorFilledMax: number;
     sensorTrigger: number;
     sensorEcho: number;
+    filled: Number;
 }
\ No newline at end of file
diff --git a/src/database/IDrink.ts b/src/database/IDrink.ts
index 7ab5bb5..c19367a 100644
--- a/src/database/IDrink.ts
+++ b/src/database/IDrink.ts
@@ -12,4 +12,7 @@ export interface IDrink extends mongoose.Document {
     // Category of the drink
     category: Category;
 
+    // Recommended amount in milliliters
+    recommendedQuantity: number;
+
 }
\ No newline at end of file
diff --git a/src/iTender.ts b/src/iTender.ts
index 5d21c33..90a7ef4 100644
--- a/src/iTender.ts
+++ b/src/iTender.ts
@@ -1,10 +1,15 @@
 import {iTenderStatus} from "./iTenderStatus";
-import {AbstractContainer} from "./database/AbstractContainer";
+import Container from "./database/Container";
+import {HCSR04} from "hc-sr04";
+import {IContainer} from "./database/IContainer";
+import Drink from "./database/Drink";
+import {IDrink} from "./database/IDrink";
 
 export class iTender {
     private static _status: iTenderStatus;
 
-    private static containers: AbstractContainer[];
+    private static containers: { container: IContainer, sensor: HCSR04, pump: null }[];
+    private static drinks: IDrink[];
 
     static set status(value: iTenderStatus) {
         this._status = value;
@@ -22,15 +27,65 @@ export class iTender {
         // todo Stop fill method
     }
 
-    static measureContainers() {
-        for( let container of this.containers )
-        {
-            container.measure();
-        }
+    static measureContainers(): Promise<void> {
+        return new Promise(async resolve => {
+            let containers = await Container.find();
+            /*
+            public measure() : Number {
+        let dist = this.sensor.distance();
+        return dist * 100 / (this.sensorFilledMax + this.sensorFilledMin);
+    }
+             */
+        })
     }
 
-    static loadContainers() {
+    static refreshDrinks(): Promise<void> {
+        return new Promise(async resolve => {
+            this.drinks = [];
+            for (let d of (await Drink.find().populate("ingredients.type"))) {
 
+
+                let drinkAccept = true;
+
+                for (let i of d.ingredients) {
+                    let c = await Container.findOne({content: i["type"]});
+
+                    if (!c) {
+                        drinkAccept = false;
+                        break;
+                    }
+
+                }
+                if (drinkAccept)
+                    this.drinks.push(d);
+            }
+        });
     }
 
+    static refreshContainers(): Promise<void> {
+
+        return new Promise(async resolve => {
+            let containers = await Container.find();
+            for (let c of containers) {
+                let i = 0;
+                let found = false;
+                for (let c2 of this.containers) {
+                    if (c2.container._id == c._id) {
+                        this.containers[i] = {
+                            container: c,
+                            sensor: new HCSR04(c.sensorTrigger, c.sensorEcho),
+                            pump: null
+                        };
+                        found = true;
+                        break;
+                    }
+                    i++;
+                }
+                if (!found)
+                    this.containers.push({container: c, sensor: new HCSR04(c.sensorTrigger, c.sensorEcho), pump: null});
+            }
+        })
+    }
+
+
 }
\ No newline at end of file
diff --git a/src/iTenderStatus.ts b/src/iTenderStatus.ts
index 637bc22..e2b1821 100644
--- a/src/iTenderStatus.ts
+++ b/src/iTenderStatus.ts
@@ -1,7 +1,14 @@
 export enum iTenderStatus {
+    // Machine is going to start
     STARTING,
+    // Machine is ready
     READY,
+    // Machine is filling your drink and destroying your leberwurst
     FILLING,
+    // Drinks will be refreshed from global database (the internet neuland :O)
     REFRESHING,
+    // Drinks will be calculated (check containers and which drinks can be done)
+    CALCULATING,
+    // An error happened; Oh no :(
     ERROR
 }
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index 442df5e..b5d8346 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -4,7 +4,8 @@ import {WebsocketApp} from "./WebsocketApp";
 import {Database} from "./database/Database";
 import Drink from "./database/Drink";
 import Ingredient from "./database/Ingredient";
-import {Category} from "./Category";
+import Container from "./database/Container";
+import {iTender} from "./iTender";
 
 const log = debug("itender:server");
 
@@ -12,31 +13,64 @@ const app = new App();
 const wsApp = new WebsocketApp();
 
 
-
-(async( ) => {
+(async () => {
     try {
         log("Starting...");
         await Database.connect();
         await app.listen();
         await wsApp.listen();
-        await test();
-    } catch( e )
-    {
+        await init();
+    } catch (e) {
         console.error("---- ERROR ----")
         console.error(e);
         process.exit(-1);
     }
 })();
 
+function init() : Promise<void> {
+    log("Initializing...");
+    return new Promise(async resolve => {
+        await iTender.refreshContainers();
+        await iTender.refreshDrinks();
+        resolve();
+    });
+}
 
 async function test() {
     console.log("Testing fn");
 
+    let ingredient = await Ingredient.findOne({name: "Cola"});
+    if (!ingredient)
+        return;
+
+    /*let drink = new Drink();
+    drink.name = "Cola";
+    drink.ingredients = [{type: ingredient, amount: 200}];
+
+    await drink.save();*/
+
+    let drink = await Drink.findOne({name: "Cola"}).populate("ingredients.type");
+    if (!drink) return;
+
+    console.log(drink);
+
+    /*let container = new Container();
+    container.slot = 1;
+    container.volume = 750;
+    container.sensorEcho = 26;
+    container.sensorTrigger = 27;
+    container.content = ingredient;
+    container.sensorFilledMax = 2;
+    container.sensorFilledMin = 15;
+
+    await container.save();*/
+
+    let container = await Container.findOne({slot: 1});
+    if (!container) return;
+
+    console.log(container);
 
-    let drink = await Drink.findOne( { name: "Mezzo Mix" } ).populate("ingredients.type");
-    if(!drink)return;
 
-    console.log(drink.ingredients);
     //console.log(drink.ingredients)
     /*let ingredient = new Ingredient();
     ingredient.name = "Cola";
diff --git a/src/routes/ws/websocket.ts b/src/routes/ws/websocket.ts
index 4244940..1517f7d 100644
--- a/src/routes/ws/websocket.ts
+++ b/src/routes/ws/websocket.ts
@@ -1,10 +1,10 @@
 import {WebSocketPayload} from "../../WebSocketPayload";
 import debug from "debug";
+import {WebSocketHandler} from "../../WebSocketHandler";
 
 const express = require('express');
 const router = express.Router();
 
-let currentWS: WebSocket;
 
 const log = debug("itender:websocket");
 
@@ -24,9 +24,9 @@ router.ws('/', (ws, req, next) => {
     });
 
     ws.on('open', (listener) => {
-        if (currentWS)
-            currentWS.close(1001);
-        currentWS = ws;
+        if (WebSocketHandler.ws)
+            WebSocketHandler.ws.close(1001);
+        WebSocketHandler.ws = ws;
     });
 });
 
diff --git a/src/web/WebSocketHandler.ts b/src/web/WebWebSocketHandler.ts
similarity index 96%
rename from src/web/WebSocketHandler.ts
rename to src/web/WebWebSocketHandler.ts
index 56442a9..3af1523 100644
--- a/src/web/WebSocketHandler.ts
+++ b/src/web/WebWebSocketHandler.ts
@@ -1,6 +1,6 @@
 import {Modal} from "./Modal";
 
-export class WebSocketHandler {
+export class WebWebSocketHandler {
     private socket : WebSocket;
 
     constructor() {
diff --git a/src/web/main.ts b/src/web/main.ts
index e3e0dbd..5444e4b 100644
--- a/src/web/main.ts
+++ b/src/web/main.ts
@@ -1,4 +1,4 @@
-import {WebSocketHandler} from "./WebSocketHandler";
+import {WebWebSocketHandler} from "./WebWebSocketHandler";
 import {Modal} from "./Modal";
 
 const main = document.getElementById("main");
@@ -54,6 +54,6 @@ function load()
 let wsHandler;
 function connect()
 {
-   wsHandler = new WebSocketHandler();
+   wsHandler = new WebWebSocketHandler();
 
 }
diff --git a/yarn.lock b/yarn.lock
index 9269a79..c4965b9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -991,6 +991,13 @@
   resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.4.tgz#cd667bcfdd025213aafb7ca5915a932590acdcdc"
   integrity sha512-EEhsLsD6UsDM1yFhAvy0Cjr6VwmpMWqFBCb9w07wVugF7w9nfajxLuVmngTIpgS6svCnm6Vaw+MZhoDCKnOfsw==
 
+"@types/rpi-gpio@^2.1.1":
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/@types/rpi-gpio/-/rpi-gpio-2.1.1.tgz#1f9c04926bae9bc95461c428b0397cf9f7ddbc4a"
+  integrity sha512-GGKVP2BatDgGEnxqBe6PbE2Wu2ZqYXpW5o6GIkOsbuj5hKS4W7DtP3gz3Vq+fNQ6JIDkv9qR0YAyDR4w9He3Bw==
+  dependencies:
+    "@types/node" "*"
+
 "@types/serve-static@*":
   version "1.15.0"
   resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.15.0.tgz#c7930ff61afb334e121a9da780aac0d9b8f34155"
@@ -1278,6 +1285,13 @@ asap@~2.0.3:
   resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
   integrity sha512-BSHWgDSAiKs50o2Re8ppvp3seVHXSRM44cdSsT9FfNEUUZLOGWVCsiWaRPWM1Znn+mqZ1OfVZ3z3DWEzSp7hRA==
 
+async-retry@^1.2.1:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/async-retry/-/async-retry-1.3.3.tgz#0e7f36c04d8478e7a58bdbed80cedf977785f280"
+  integrity sha512-wfr/jstw9xNi/0teMHrRW7dsz3Lt5ARhYNZ2ewpadnhaIp5mbALhOAP+EAdsC7t4Z6wqsDVv9+W6gm1Dk9mEyw==
+  dependencies:
+    retry "0.13.1"
+
 babel-runtime@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.26.0.tgz#965c7058668e82b55d7bfe04ff2337bc8b5647fe"
@@ -1641,7 +1655,7 @@ debug@4.x, debug@^4.1.0, debug@^4.1.1, debug@^4.3.4:
   dependencies:
     ms "2.1.2"
 
-debug@^3.2.7:
+debug@^3.1.0, debug@^3.2.7:
   version "3.2.7"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.7.tgz#72580b7e9145fb39b6676f9c5e5fb100b934179a"
   integrity sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==
@@ -1762,6 +1776,14 @@ envinfo@^7.7.3:
   resolved "https://registry.yarnpkg.com/envinfo/-/envinfo-7.8.1.tgz#06377e3e5f4d379fea7ac592d5ad8927e0c4d475"
   integrity sha512-/o+BXHmB7ocbHEAs6F2EnG0ogybVVUdkRunTT2glZU9XAaGmhqskrvKwqXuDfNjEO0LZKWdejEEpnq8aM0tOaw==
 
+epoll@^2.0.10:
+  version "2.0.10"
+  resolved "https://registry.yarnpkg.com/epoll/-/epoll-2.0.10.tgz#aae54a267d7fb8108074b62646d658b267f73915"
+  integrity sha512-kx5y1SxivN99HjXDZpE/A73FHJV/dzRQt+qoF88CEza3RcEKGqNfkXPPY/oqVBV5w6G2N6b8xd5s5zprgrUVnQ==
+  dependencies:
+    bindings "^1.5.0"
+    nan "^2.14.0"
+
 epoll@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/epoll/-/epoll-4.0.1.tgz#62b787d29980394798fa7b9a45fbefea518fc732"
@@ -2521,7 +2543,7 @@ ms@2.1.3, ms@^2.1.1:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
   integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
 
-nan@^2.14.2:
+nan@^2.14.0, nan@^2.14.2:
   version "2.17.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.17.0.tgz#c0150a2368a182f033e9aa5195ec76ea41a199cb"
   integrity sha512-2ZTgtl0nJsO0KQCjEpxcIr5D+Yv90plTitZt9JBfQvVJDS5seMl3FOvsh3+9CoYWXf/1l5OaZzzF6nDm4cagaQ==
@@ -2927,6 +2949,11 @@ responselike@^1.0.2:
   dependencies:
     lowercase-keys "^1.0.0"
 
+retry@0.13.1:
+  version "0.13.1"
+  resolved "https://registry.yarnpkg.com/retry/-/retry-0.13.1.tgz#185b1587acf67919d63b357349e03537b2484658"
+  integrity sha512-XQBQ3I8W1Cge0Seh+6gjj03LbmRFWuoszgK9ooCpwYIrhhoO80pfq4cUkU5DkknwfOfFteRwlZ56PYOGYyFWdg==
+
 right-align@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/right-align/-/right-align-0.1.3.tgz#61339b722fe6a3515689210d24e14c96148613ef"
@@ -2946,6 +2973,15 @@ roarr@^2.15.3:
     semver-compare "^1.0.0"
     sprintf-js "^1.1.2"
 
+rpi-gpio@^2.1.7:
+  version "2.1.7"
+  resolved "https://registry.yarnpkg.com/rpi-gpio/-/rpi-gpio-2.1.7.tgz#0a478d77133733830b4eb62075fddf5d6bb7ec82"
+  integrity sha512-u6McqKR6QuHP5zq/3UuXkJfY2fJHhvNaJMP58jz7pIf4OFyhBI3hh0vyYn5OGMwFbFdcBfOMC1RAPeRXLKF6YA==
+  dependencies:
+    async-retry "^1.2.1"
+    debug "^3.1.0"
+    epoll "^2.0.10"
+
 safe-buffer@5.1.2:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"