Arduino/Bluetooth

This is a really fun way to learn talking to the board. It can display almost anything the Serial monitor can and can send nearly any command imaginable.

There are tons of tutorials out there and unfortunately they all seem to leave something out. As I am sure this one will as well.

Wiring

It is important that you reduce the voltage send to the bluetooth chip.

We do this with a classic wheatstone bridge voltage divider.

Uploading

You need to disconnect the Rx and Tx pins when uploading.

If you are using Software Serial Library to use alternate pins you may not need to do this.