Help Extension Mbot2 (and Mbot1)

Patryk_F · April 21, 2023, 9:29am

Then follow the next tip.

EMILIE_GAUDICHEAU · April 21, 2023, 9:39am

I don't understand the next tip.....sorry

Patryk_F · April 21, 2023, 9:46am

Add a built-in bluetooth component to your project.
Designer screen:

Connectivity
- BluetoothClient

EMILIE_GAUDICHEAU · May 10, 2023, 1:04pm

I added the:

Connectivity
Bluetooth client

But I still don't see the Mbot whether with an old or new Android

I forgot something??

Patryk_F · May 10, 2023, 1:34pm

Do you see the mbot in the list of paired or unpaired devices in android bluetooth settings?

Or can you see the mbot with a regular bluetooth component?

When you added the bluetoothClient component, are you still getting this error?

EMILIE_GAUDICHEAU · May 10, 2023, 2:15pm

No, I don't get any more errors.

I think it comes from makeblock's bluethoot map.

Because when I try to appear the mbot, I have this message which appears "An application is required to use this device"

It seems that we can find a solution so that the phone connects automatically...

I don't know if I'll make it, my robot contest is falling apart...

Patryk_F · May 10, 2023, 2:28pm

Try it:

AddressesAndNames from component BluetoothClient.

Patryk_F · May 10, 2023, 2:31pm

Are you using mbot2 or mbot1?

EMILIE_GAUDICHEAU · May 10, 2023, 2:46pm

I'm on the Mbot1+bluetooth card because I've been told it won't work with mbot2.

Patryk_F · May 10, 2023, 4:36pm

have you tried?

EMILIE_GAUDICHEAU · May 10, 2023, 5:15pm

Yes..

I see this address. Which is better since before I couldn't see anything...

But I have the impression that the bluetooth card is preventing me from connecting...

Patryk_F · May 10, 2023, 6:05pm

Try extracting the MAC address itself. If the app will only connect to your Mbot, you don't need to select the device from the list. You can connect to a fixed MAC address: 70:3E:97:53:4C:B5.

Taifun · May 10, 2023, 6:05pm

Try to connect using only the Mac address without the device name...

Use the split at spaces block together with the Listpicker.Selection and select the first item from the list to get the Mac address

Taifun

EMILIE_GAUDICHEAU · May 10, 2023, 7:50pm

like that?

Taifun · May 10, 2023, 8:03pm

no

you can find the split at spaces block in the text drawer
http://ai2.appinventor.mit.edu.ezproxy.canberra.edu.au/reference/blocks/text.html#splitatspaces

Taifun

Patryk_F · May 10, 2023, 8:09pm

Use the blue block "item from list at index" from the List drawer. Append it to "addresse" instead of "Mbot2.selection".
In the "list" slot, attach the red split at space block from the Text drawer (this is what Taifun is talking about).
To the "index" slot, attach a blue math block and type 1 into it.
Add "Mbot2.selection" to the "split at space" block.

EMILIE_GAUDICHEAU · May 10, 2023, 8:32pm

it doesn't work.. but i really think it's hardware...
I have the impression that the new makeblock Bluetooth card, prevents any connection to the mbot if it is not with their software .....

If not, I have no idea.

Thank you both for taking your time to help me.

Patryk_F · May 10, 2023, 8:34pm

What do you mean it doesn't work? What's wrong, message?

Patryk_F · May 10, 2023, 8:36pm

What is this card? Is it the bluetooth module? show a picture of this module.

Perhaps the new module is bluetooth Le. Like in mbot2. Can't you use the old BT module?

Taifun · May 10, 2023, 8:39pm

please show us a Do it result

use Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing, and Debugging Tools
Taifun

Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.