MIT Appinventor, Bluetooth and "How to Mechatronics" video

MIT App Inventor Help
1

I'm working throught this helpful YouTube video on setting up Bluetooth comms between Android and Arduino, from the excellent "How to Mechatronics" channel

@4:01 in the video the ListPicker under HorizontalArrangement2 suddenly changes to "BluetoothList". I assume this was not just a rename, but also somehow associated the relevant Bluetooth blocks (as shown later in the first few steps in Blocks editor @4:20). How do I make this association?

In my design If I just rename the ListPicker to BluetoothList the Blocks @4:20 do not appear when I switch to the Blocks editor and select the Bluetooth ListPicker.
What steps am I missing?
TIA

2

That 7 year old video is new to us.

More recent materials can be found on this board.

3

Thanks but too much info to wade through. I'm really just asking how to associate blocks from the bluetooth client with a ListPicker?

4

The name is not important, you can leave any name for the ListPicker component. Below the list of components there is a Reneme button which is used to rename the component.

1 Like
5

Hi,
i confirm what @Patryk_F has just answered you: the author of the video is "renaming" (this is what he says) the components in a more suitable way to recognize them from the Blocks page, therefore the ListPicker is renamed BluetoothList.
Cheers

6

After fiddling around in the app I found how to this issue can be resolved. My question wasn't about renaming, only "how to associate blocks from the bluetooth client with a ListPicker?" as no blocks were appearing in my Block editor view. However if I click on items on the left pane in the Blocks editor the blocks re-appear, if I click again they dissappear. So they are just toggled on/off and they were there all along, just hiding.

7

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