To link a standard 16×2 LCD directly with the microcontroller, for instance Arduino, you would need atleast 6 I/O ... which is a general purpose bidirectional 8 bit I/O port expander that uses the I2C ...

In Arduino environment, it's convenient to access BT SPP like a serial port and react to the command string sent from the BT serial port. Many Arduino projects have utilized this way to allow ...