The Bluetooth Bee (BTBEE) is an easy to use Bluetooth Serial Port Profile (SPP) module compatible with existing XBEE sockets, designed for transparent wireless serial connection setup. Using UART interface, BTBEE only can be use as a slave and communicate with host like computer, bluetooth handphone, SKKCA and other bluetooth devices. Bare in mind that communication between 2 BTBEE is not working. Bluetooth BEE is compatible with XBEE starter kit board (SKXBEE-BOARD) and UC00B, so you may use them for BTBEE communication.
Relay have become a common use electronic component which operate as an switching device by simply apply voltage to ON and OFF it. For this project, we will discover a simple relay connected with an LED to show what is the basic function and connection.
Universal Asynchronous Receive/Transmit (UART) has becoming a popular item on sending and receiving data in the fast way. In here, we are going to experience on how to use UC00A to communicate with our computer/PC and SK40C.
Besides on directly connected 7 segment with direct I/O port from microcontroller, we can also use the CD4511 (7 segment encoder) to help on decreasing the microcontroller I/O port and only required to send the binary data.
Nowadays, 7 segment has become the most popular display unit on market because it is cheap, easy to program and small. On market, we can found that there was 2 types of 7 segment which is common anode and common cathode. In this project, we are going to use 7 segment with common cathode and directly interface to microcontroller.