Shulou(Shulou.com)05/31 Report--

Never say that some manufacturers will not dig deep into their ambitions for raspberry bark. When Ievgenii Tkachenko imagined a challenge, he tried to create an underwater drone to go to a place where several people had been, and succeeded in creating a working prototype that he was working hard on.

Ievgenii learned a lot from his efforts, inspired by the inventors who watched the Discovery Channel. "for me, this is a major engineering challenge," he said. Although he finally drowned himself in a process of trial and error, the results so far have been impressive.

Pi diving

The project began with a loose plan in Ievgenii's mind. "I at least know what the project should include: movement inside the device, lights, cameras and gyroscopes, as well as external smartphone control," he explained. "it's simple, but I don't know what devices drones can use, which are limited by economic conditions."

With this in mind, one of his first actions was to choose raspberry bark 3B, which he said was the perfect choice to control motors, diodes and gyroscopes, while sending video streams from the camera and receiving commands from the control device.

The raspberry Pi 3 is located in the housing and connected to the LiPo battery, which also powers light-emitting diodes and motors.

"I am surprised that this small motherboard has a full-featured UNIX-based operating system that can easily install software such as Node.js server," he told us. It has control input and output pins as well as many libraries. Through the Ethernet port and WLAN as well as the camera, just plug and play. I can't find a better solution. "

The LED is connected to the radiator to prevent overheating, and the pulse driver is used for flashlight control.

Ievgenii works with friends to create suitable housings for components, including twisted-pair cables, motors, electronic speed controllers, LED and pulse drives, and batteries for underwater data transmission. Four motors are connected to the outside of the housing and strive to ensure that they are waterproof. Bathing and lake experiments were carried out.

Streaming video

The onshore WiFi router connects to the raspberry Pi,Ievgenii through a RJ45 connector and an Ethernet cable to develop an Android application that connects to the raspberry Pi through an address and port ("as an Android developer, I'm used to using this platform"). It also allows movement to be controlled through a touch screen, although he says Android game consoles can also be used. When it is up and running, Pi transfers video from the camera to the application-"Real-time video streaming is not easy, I spend a lot of time on the solution"-but the wired connection means that drones currently can only be used if the cable length allows.

Place the camera in the transparent waterproof box installed in front of the waterproof box.

In this sense, it is not perfect. "operating drones is also difficult and needs to be enhanced with additional control panels and more motors to achieve smooth movement," Ievgenii admits. However, in addition to building a project based on fast and reliable C code and using a USB 4K camera, he can also see the potential for the future, which he thinks can swim rather than sink.

"similar drones are used for ship inspection, and they can also be used for rescue teams or for scientific purposes," he said. " They can be used to discover a huge sea world without training or adventure. In fact, now that I know raspberry bark, I know I can create almost anything, from radio electronic toy cars to smart homes. "

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