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Android based mobile phone Bluetooth control
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Application background Through the software, the user installs the software on Android mobile phone, you can use the Bluetooth module and the lower computer to communicate with the lower computer. The lower computer uses the MCU and the Bluetooth module to carry on the serial port communication, and then the Bluetooth and the mobile phone carries on the communication. The software can automatically search for the Bluetooth connection, the connection after the data transmission, including data receiving and sending, so as to achieve a series of functions. Key Technology The use of mobile phone Bluetooth, easy and simple to receive and send data through a series of functions. The software uses Java language to develop, easy to modify, can meet the developers for any two development. The software has the function of landing verification, to protect the user's security, after landing interface is the functional interface, through the mobile ph
shen1994 1 0
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QT multi function computer (interface data sharing
4.0
Application background Provide the serial interface, through the data frames format of data transfer, can be a simple data display, data transmission, save the data, also can display graph, data transmission speed is very fast, 2ms read a, interface between data transfer is very convenient and effective. In a RFID read card test, the new opened a window, you can read RFID card number and voice broadcast. Key Technology Development platform is the QT development environment, the use of C++ language, and the use of the third party of the serial class and Qwt drawing curves, the idea of the window interface design, using a window can be extended to multiple windows, data can be shared between multiple windows.
shen1994 18 0
1
Four axis aircraft (to achieve balanced regulation
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Application background Through the remote control can control the attitude of the four axis, while the attitude of the four axis can be transmitted through Bluetooth data, from the host computer observation of the attitude of the four axis. Here we use the parameters to adjust the PID to complete the control of the four axis, the attitude of the analytic algorithm is accomplished by the IMU algorithm, with four yuan to calculate, convenient calculation. Key Technology Programming using C language programming, the main control chip STM32, clock speed can reach 72M and control cycle 2ms. In the algorithm, control algorithm has used the PID control algorithm, in regulation parameters, adjusting PD, a reply and a is the damping force, and regulating I, eliminate static error, so that the four axle vehicle can smoothly fly high in the sky, future plans and set high.
shen1994 0 0
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