Im trying to use bluetooth with arduino, and I need app inventor to connect. But i get the error The operation > cannot accept the arguments: , [*empty-string*], [10]

[Nilton_Santos]

Hi, I have posted here some Tutorials about AppInventor and Arduino, maybe can help you

App Inventor - Arduino

I provide 15 tutorial links about App Inventor communicating with Arduino Uno. The tutorials start with a Bluetooth connection and they are developed ending with a monitor for 2 potentiometers, leds, buttons and small supervisory using procedure blocks, canvas, etc Tutorial 1/15: connecting with bluetooth Tutorial 2/15: Led ON / OFF Tutorial 3/15: Led ON / OFF - Changing Button Color Tutorial 4/15: Led ON/OFF - Using a single button on App Invento…