How to use buttons on esp32/arduino to control MIT app inventor aps via bluetooth?

[ChrisWard]

Hi again Pawel

I think we can use entirely different code in the Sketch to handle the buttons + sensor data. I need to know what your exact hardware model is and a drawing or photo of the setup.

See this by Juan, Section 6:

Bluetooth HC-06. Arduino. Send. Receive. Send text file. Multitouch. Image

5.- App requests temperature and humidity to the Arduino. The Arduino sends values. p9A0i_bluetooth_temperatura.aia (3.3 KB) [bt_14] [bt_15] When Click in tempe_humidity Button, App sends the character “D”. Arduino concatenates the temperature and humidity Strings separated by a comma: 37,80 App ReceiveText 37,80 converts it to a list and separates the values. Note: the DelimiterByte must have the value 10. [10 is ASCII New Line, LF. Arduino \n] [bt_16] In this Arduino code I…