diff --git a/src/pages/ota-wizard/ota-wizard.module.ts b/src/pages/ota-wizard/ota-wizard.module.ts
index 2b902cd..1f9d98e 100644
--- a/src/pages/ota-wizard/ota-wizard.module.ts
+++ b/src/pages/ota-wizard/ota-wizard.module.ts
@@ -3,6 +3,7 @@ import { IonicPageModule } from 'ionic-angular';
 import { OtaWizardPage } from './ota-wizard';
 import { Network } from '@ionic-native/network';
 import { OtaWifiProvider } from '../../providers/ota-wifi/ota-wifi';
+import { CompilerProvider } from '../../providers/compiler/compiler';
 
 @NgModule({
   declarations: [
@@ -14,6 +15,7 @@ import { OtaWifiProvider } from '../../providers/ota-wifi/ota-wifi';
   providers: [
     Network,
     OtaWifiProvider,
+    CompilerProvider
   ]
 })
 export class OtaWizardPageModule {}
diff --git a/src/pages/ota-wizard/ota-wizard.ts b/src/pages/ota-wizard/ota-wizard.ts
index 74de915..bbdf76d 100644
--- a/src/pages/ota-wizard/ota-wizard.ts
+++ b/src/pages/ota-wizard/ota-wizard.ts
@@ -14,6 +14,7 @@ import { Network } from '@ionic-native/network'
 import { Subscription } from 'rxjs/Subscription';
 
 import { OtaWifiProvider, WifiStrategy } from '../../providers/ota-wifi/ota-wifi';
+import { CompilerProvider } from '../../providers/compiler/compiler';
 
 @IonicPage()
 @Component({
@@ -43,6 +44,7 @@ export class OtaWizardPage implements OnInit, OnDestroy {
     private otaWifi: OtaWifiProvider,
     private navCtrl : NavController,
     navParams : NavParams,
+    private compilerprovider:CompilerProvider
   ) {
     this.sketch = navParams.get('sketch')
   }
@@ -170,11 +172,16 @@ export class OtaWizardPage implements OnInit, OnDestroy {
     // TODO: implement. use this.sketch
 
     this.state.compilation = 'compiling'
-    setTimeout(() => {
-      this.compiledSketch = 'firmware binary here..'
+    try {
+      this.compiledSketch = await this.compilerprovider.callcompiler(this.sketch)
+      console.log((this.compiledSketch))
+
       this.state.compilation = 'done'
       this.slides.lockSwipeToNext(false)
-    }, 5000)
+    } catch (err) {
+      this.state.compilation = 'error'
+      this.errorMsg = err.message
+    }
   }
 }
 
diff --git a/src/providers/compiler/compiler.ts b/src/providers/compiler/compiler.ts
index 039dc1d..f8cdcbf 100644
--- a/src/providers/compiler/compiler.ts
+++ b/src/providers/compiler/compiler.ts
@@ -1,6 +1,7 @@
 import { HttpClient,HttpHeaders }  from '@angular/common/http';
 import { Http, Headers, RequestOptions } from '@angular/http';
 import { Injectable } from '@angular/core';
+import { BindingFlags } from '@angular/core/src/view';
 
 /*
   Generated class for the CompilerProvider provider.
@@ -8,6 +9,8 @@ import { Injectable } from '@angular/core';
   See https://angular.io/guide/dependency-injection for more info on providers
   and Angular DI.
 */
+const url = "https://compiler.sensebox.de"
+
 @Injectable()
 export class CompilerProvider {
   
@@ -15,25 +18,21 @@ export class CompilerProvider {
     console.log('Hello CompilerProvider Provider');
   }
   
-async callcompiler(Binary : string): Promise<any> {
+async callcompiler(sketch : string): Promise<any> {
   let Headers =  new HttpHeaders({'Content-Type': 'application/json'} );
   
   /*let options = new RequestOptions({ headers: headers });*/
   
-    let data ='{"board":"sensebox-mcu", "sketch":"void setup() {\nSerial.begin(9600);\nSerial.println(\"Hello World\");\n}\nvoid loop() {}"}'
-    
-    return  this.http.post('url', data,{ headers:new HttpHeaders({'Content-Type': 'application/json'} ) })
+    let data ={"board":"sensebox-mcu", "sketch":sketch}
+    return  this.http.post(`${url}/compile`, data,{ headers:new HttpHeaders({'Content-Type': 'application/json'} ) })
     .toPromise()
-    .then((response) =>
-      {
-      console.log('API Response : ', response.json());
-      return response.json();
+    .then((response:any) =>{
+      console.log('API Response : ', response.data.id);
+      return  this.http.get(`${url}/download?id=${response.data.id}&board=sensebox-mcu`,{
+        responseType: 'text',
       })
-   
-    };
+      .toPromise()
+             
+    });
   };
-  /* .catch((error) =>
-    {
-      console.error('API Error : ', error.status);
-      console.error('API Error : ', JSON.stringify(error));
-      reject(error.json()); */
\ No newline at end of file
+}
\ No newline at end of file