Controlling LED's from my phone via BluetoothLE

[ChrisWard]

@Muhammad_Zulkifli

I have tried also in MIT App. That shows an error like that sir
What kind of error is that? And how do i fix it

I will take a look at that now - it's the BLE send integer block.

[phil1]

Hi Chris. Interesting. I have android 11, sdk 30
I am using Anke's solution, and still get an ACCESS_FINE_LOCATION

I did what you suggest and dragged a location sensor, but from there, in the block mode, I cannot see any "ask permission" from the location library ?

Thank you

[ChrisWard]

@Muhammad_Zulkifli

I've checked it out sir, and I found that number 10 is unidentified.

Hmm - that should not be the case. We cannot directly send '0' from the App because it is reliant on the List Of Buttons indexes and everything in App Inventor starts with '1'. So, in the App, if the index is '10', we could catch that and send '0' instead - but how did you find '10' to be unidentified? It should be possible to have a Switch Case statement in the Sketch going into the 100s or 1000s......

[ChrisWard]

@phil1

I did what you suggest and dragged a location sensor,

Hello Phil - that is only good to go for Android <11, and permission is not asked for by most other Android versions, the permission is set in the Manifest (because the location sensor component is there).

[ChrisWard]

@Muhammad_Zulkifli

I have tried also in MIT App. That shows an error like that sir
What kind of error is that? And how do i fix it

Can you try this Muhammad:

[Muhammad_Zulkifli]

@ChrisWard

but how did you find '10' to be unidentified?

I don't know sir, because when I type 10 there is no response at all in the bluelight application.

[Muhammad_Zulkifli]

@ChrisWard

Can you try this Muhammad:

I have tried sir but there is still an error

[Muhammad_Zulkifli]

on the serial monitor it just says connected and disconnected

[Muhammad_Zulkifli]

like this right sir?

[ChrisWard]

@Muhammad_Zulkifli

bluelight application

That is not using the file I uploaded?

However, the Block error is the same and unfortunately that smells like a bug in the BLE extension. Does the error occur for every LED Button in the App?

[Muhammad_Zulkifli]

@ChrisWard

That is not using the file I uploaded?

yes, I am using it sir

@ChrisWard

Does the error occur for every LED Button in the App?

The application also shows an error like that sir. And all buttons like that

[ChrisWard]

Not that it is the cause of the problem - why have you changed the UUIDs?

[ChrisWard]

@Muhammad_Zulkifli

The application also shows an error like that sir. And all buttons like that

....and that is using the original BLE send, or the replacement BLE send that uses a List?

[ChrisWard]

@Muhammad_Zulkifli

on the serial monitor it just says connected and disconnected

That's because the App has not sent a value.

[ChrisWard]

Hi Muhammad

Try these, I have changed the App send value type to Short. All Arduino boards will see a Short as a 16bit Integer. The Sketch is changed accordingly.

LED_Control_HM10_4.aia (196.7 KB)

LED_COBAK4.ino (6.9 KB)

[Muhammad_Zulkifli]

@ChrisWard

why have you changed the UUIDs

No, I didn't change the UUID sir

[Muhammad_Zulkifli]

@ChrisWard

and that is using the original BLE send, or the replacement BLE send that uses a List?

I'm using original BLE sir

[Muhammad_Zulkifli]

@ChrisWard

That's because the App has not sent a value.

Yes I know that, I'm just reporting to you sir

[Muhammad_Zulkifli]

I am now using the cobak4 sketch you gave me. Then I try to connect the bluetooth to my android.

What you write in the block and what is written in the application are different, is that okay sir?

[Muhammad_Zulkifli]

As I was worried, there is an error in the UUID