This is my code and my issue. Instead of showing the value of the pottentiometer (A0), is showing this symbol �.
The cause may be an incorrect baudrate. What BT module?
The Bluetooth module is this one. The connection is well made because the symbols react when I spin the potentiometer, but the symbols still appear.
Check it using another application to receive data. For example Serial Bluetooth Terminal:
It keeps doing the same thing. I guess the problem is in the encoding of the Arduino program. But I don't know how to solve it
Try different values:
- 19200
- 38400
Here's an old factor from BBS days: Parity and Bits per byte.
Can those be set using AT commands to the UART?
I've changed the baudrate to 38400 and it worked. Thanks a lot.