UM3 App not connecting

[ryandavidson 1]

I can see the live webcam in the app, although when i try to connect it says it cannot find the printer.

Latest firmware/cura/app.

[Marco_TvM 34]

@ryandavidson Can you humor me and try to connect to the printer with the app without the NFC material spools placed?

If the app works without the material spools placed, you should definitely update the App because there was a bug solved causing this specific issue.

Edited June 28, 2017 by Guest

[BairdB 1]

@ryandavidson Can you humor me and try to connect to the printer with the app without the NFC material spools placed?

If the app works without the material spools placed, you should definitely update the App because there was a bug solved causing this specific issue.

 

That didn't work, I still got the same issue.????

[Nicolinux 288]

Another idea. Please restart the printer to rule out the possibility that the printer API does not respond.

If this still doesn't work, you could enable the developer mode on the printer and check the printer API with a browser.

First enable the developer mode on the printer: System-Maintenance-Diagnostics->Developer mode.

Then find out the IP of your printer. It should be displayed on the printer main menu at the top. Access this URL with your browser (replace with well... the IP address)

http:///api/v1/printer/status

If this works, try the direct url for the video feed:

http://:8080/?action=stream

Good luck

[lvl2contact 3]

I am having the same issue with my new UM3 and S8. On a side note, the UM3 app is also not compatible with Android 7 for model preview as it uses Webview still..

[lvl2contact 3]

Followup - The app now works for me, for some unknown reason. Only changes since have been the installation of a Solex print core which I assume is not relevant.

[lvl2contact 3]

Third time is the charm..

App stopped working again. I did perform a firmware (stable release) update in the interim.

[Phil_ 0]

I was able to reproduce this problem with an attached debugger - looks like it needs a fairly simple fix.

Device: Onplus 3T, running Android 8, Ultimaker 3 App version 1.0.1, firmware update on the printer last done on the 20th.

12-23 18:19:51.418 10509-10509/? W/System.err: com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: Expected an int but was 42115.42551996263 at line 1 column 326 path $.heads[0].extruders[0].active_material.length_remaining
12-23 18:19:51.424 10509-10509/? W/System.err:     at com.google.gson.internal.bind.TypeAdapters$11.read(TypeAdapters.java:249)
12-23 18:19:51.424 10509-10509/? W/System.err:     at com.google.gson.internal.bind.TypeAdapters$11.read(TypeAdapters.java:239)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:116)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:216)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:116)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:216)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:82)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:116)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:216)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:82)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:116)
12-23 18:19:51.425 10509-10509/? W/System.err:     at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:216)
12-23 18:19:51.425 10509-10509/? W/System.err:     at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:37)
12-23 18:19:51.425 10509-10509/? W/System.err:     at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:25)
12-23 18:19:51.425 10509-10509/? W/System.err:     at retrofit2.ServiceMethod.toResponse(ServiceMethod.java:117)
12-23 18:19:51.425 10509-10509/? W/System.err:     at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:211)
12-23 18:19:51.425 10509-10509/? W/System.err:     at retrofit2.OkHttpCall.execute(OkHttpCall.java:174)
12-23 18:19:51.425 10509-10509/? W/System.err:     at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$RequestArbiter.request(RxJavaCallAdapterFactory.java:171)
12-23 18:19:51.425 10509-10509/? W/System.err:     at rx.internal.operators.OperatorSubscribeOn$1$1$1.request(OperatorSubscribeOn.java:80)
12-23 18:19:51.425 10509-10509/? W/System.err:     at rx.Subscriber.setProducer(Subscriber.java:211)
12-23 18:19:51.425 10509-10509/? W/System.err:     at rx.internal.operators.OperatorSubscribeOn$1$1.setProducer(OperatorSubscribeOn.java:76)
12-23 18:19:51.425 10509-10509/? W/System.err:     at rx.Subscriber.setProducer(Subscriber.java:205)
12-23 18:19:51.425 10509-10509/? W/System.err:     at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:152)
12-23 18:19:51.425 10509-10509/? W/System.err:     at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:138)
12-23 18:19:51.425 10509-10509/? W/System.err:     at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:50)
12-23 18:19:51.426 10509-10509/? W/System.err:     at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
12-23 18:19:51.426 10509-10509/? W/System.err:     at rx.Observable.unsafeSubscribe(Observable.java:8666)
12-23 18:19:51.426 10509-10509/? W/System.err:     at rx.internal.operators.OperatorSubscribeOn$1.call(OperatorSubscribeOn.java:94)
12-23 18:19:51.426 10509-10509/? W/System.err:     at rx.internal.schedulers.CachedThreadScheduler$EventLoopWorker$1.call(CachedThreadScheduler.java:220)
12-23 18:19:51.426 10509-10509/? W/System.err:     at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
12-23 18:19:51.426 10509-10509/? W/System.err:     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:457)
12-23 18:19:51.426 10509-10509/? W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
12-23 18:19:51.426 10509-10509/? W/System.err:     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
12-23 18:19:51.426 10509-10509/? W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
12-23 18:19:51.426 10509-10509/? W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
12-23 18:19:51.426 10509-10509/? W/System.err:     at java.lang.Thread.run(Thread.java:764)
12-23 18:19:51.426 10509-10509/? W/System.err: Caused by: java.lang.NumberFormatException: Expected an int but was 42115.42551996263 at line 1 column 326 path $.heads[0].extruders[0].active_material.length_remaining
12-23 18:19:51.427 10509-10509/? W/System.err:     at com.google.gson.stream.JsonReader.nextInt(JsonReader.java:1201)
12-23 18:19:51.427 10509-10509/? W/System.err:     at com.google.gson.internal.bind.TypeAdapters$11.read(TypeAdapters.java:247)
12-23 18:19:51.427 10509-10509/? W/System.err:     ... 39 more

 

[Phil_ 0]

Just noticed... the app was last updated 2016 - I reported this bug in December 2017.

I am beginning to understand the frustrations in the app reviews.