Help with bluetooth and accelerometer

[Victor Guizien]

Hi, I made an app con control a car via bluetooth with the accelerometer,

.

My problem resides when I try to connect to the bluetooth modules (HC-06) the app crashes.

The screen displays the acceleration for the 3 axis and a coded message that is sent to the bluetooth and then interpreted via software (the message is such as: s500m300, s for servo and m for motor).

I tried disabling the labels that displayed the information and it worked, but I don't understand why it crashes ONLY after connected to the bluetooth module (and connection is succesful).

If the module isn't connected the axis refresh normally and I can see the accelerations changing in real time and the message being updated.

Thanks in advance.

Screenshots of the app code: 

https://gyazo.com/db15ceca8962e9f4710498a2ea1e96e8

https://gyazo.com/db15ceca8962e9f4710498a2ea1e96e8

[Taifun]

probably the accelerometer sensor changed event fires too often and your bluetooth component tries to send too frequently?

use a clock component and the clock.timer event instead, try different timer intervalls, for example 500 milliseconds ...

Taifun

PS: next time please add screenshot directly into your thread, see screenshot below

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Trying to push the limits of App Inventor! Snippets and Tutorials from Pura Vida Apps by Taifun.         

[Victor Guizien]

Perfect ! That might be the issue, I'll look into the timer tonight, thank you for your help, I'll keep you posted since tomorrow I'll test it again. Thanks !

[Victor Guizien]

Hi! So I changed the code and it seems to be working now, thanks a lot.

But I get this permanent error message saying "Error 516: unable to write: Broken pipe".

What is causing this and how can I fix it ?

Thanks.

[Taifun]

first you need a connection, then you can send

if you get error 516, then there is no conection anymore

how to connect correctly

Taifun