Las versión 12 de Android no me permite conectarme con bluetooth. Las aplicaciones hechas para conectar Arduino con app Inventor no me funcionan con la versión 12 de Android.
Welcome!
Please search the community to find out, that you have to ask for 2 permissions to get it working
For example
Taifun
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Hello Jose
In fact, you also need to ensure that your Android Device (Smartphone) has fine location switched on. Drag in a Location Sensor from the components palette: