Design and Testing of Wireless Keyboard Based on FPGA
Facing the shortcomings of mechanical keyboard,which is not easy to carry,high noise and high cost,a wireless touch keyboard based on human capacitive sensing and FPGA is devel-oped.The whole platform is composed of peripheral system,FPGA system and upper computer.The peripheral system designs a convenient keyboard or touch board through media and signal acquisition circuit;FPGA system is the FPGA hardware development platform of Nexys4 DDR model,which processes,sends and monitors the received data;The upper computer includes Bluetooth circuit and upper computer program.Through Bluetooth communication,the key-board can realize wireless control applications such as PPT page turning,document typing,game control,mouse movement and piano playing.Practice has shown that due to the diversity of de-sign of peripheral media and PC operation,not only does the platform have hierarchy in width and depth,but also it can mobilize students'interest in learning,train students'thinking ability and stimulate students'innovative consciousness.
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