With the development of drone technology, drones have quickly become popular in our lives and work. Whether you are doing work surveys or simply entertainment aerial photography, you can easily experience the joy of controlling drones. . At present, there are many companies that design and manufacture drones. At present, DJI in China has been relatively successful in designing drones. There are also many different drones on the market for selection and purchase. However, the price of drones is generally thousands, even Tens of thousands are middle and high-end consumer goods, especially for many student parties, they really can't afford it. If the student party also wants to experience drones, what should they do? In fact, you might as well make a drone yourself.
There are two main points for making a drone by hand, one is the design of the fuselage and the other is the production of the remote controller.
Regarding the airframe design, it is usually X or cross type. Basic knowledge of mechanical design is required. Except for blade design and drive motor and battery selection, other parts are mainly optimized to reduce the load. You can refer to the library's aircraft design Books, such as helicopters. Of course, because the actual weight is very light, it is basically enough to use engineering plastics as the shell, and a small part of the structure must be reinforced with carbon fiber reinforced plastic or aluminum. You can do the overall rough design first, and then optimize.
The choice of flight control should consider the latest flight control as much as possible, which is more stable. For example, naza-M-V2. The choice of motor depends on load and frame. DJI's motor and ESC are generally a set. The combination of these two depends on the motor power and ESC parameters, and also affects the configuration and battery of the whole machine. Brushless motor (Brushless motor), its rotor is permanent magnet steel, together with the shell is connected to the output shaft, the stator is a winding coil, remove the brush motor used to alternately change the commutation brushes of the electromagnetic field. The full name of the ESC is Electronic Speed ​​Controller (ESC), which adjusts the speed of the motor according to the control signal, connects the motor to the ESC, and fixes it on the arm to ensure that the motor is perpendicular to the arm.
STM32 single chip microcomputer can be used to design the remote control controller, and it is necessary to master the C language and STM32 knowledge. If you don’t want to design your own circuit board for the control part attached to the fuselage, you can buy those development boards and then connect your own GPS module, camera module, and wireless module. You can also consider buying a Futab remote control, which is relatively stable and low risk. This plan provides consideration. Those who have prior knowledge can understand the design by themselves, for reference only.
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