Introduction¶

In this project we have tried to emulate one of the demo programs in Psoc starter kit using mbed chips. For wireless transmission of text , we have used 2 zigbee modules(1 transmitter and 2nd receiver).

In the first part , the data which is transmitted is displayed using red leds and accelerometer . When moving the breadboard fast which has the receiver zigbee module , red leds and the accelerometer , we are able to successfully display the text using persistence of vision property of eye. We displayed around 14 characters.

In the Second part, we have displayed the transmitted text using shiftbrite registers using the same technique as used for LED's. In this part we could only display maximum of 4-5 letters , Numbers(0-9) or Special characters.

The last thing which we have implemented is we displayed a Bitmap image on the shiftbrite registers. The bitmap image was first processed in Matlab and the co-ordinates were included in the source code. We successfully implemented some images like circle, square etc.

Block Diagram¶

Hardware Used¶

• mbed chip LPC 1768
• Xbee module [transmitter and receiver]
• Accelerometer
• 8 Shiftbrite register
• LED's and resistors

Connections¶

Source Code¶

Transmitter

Receiver

Project Images¶

ZigBee Transmitter and Receiver

Shiftbrite module

Demo¶