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Questions and Answers

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Charles Sanders
Charles Sanders


The Community College Quadcopter Challenge was excited to return to in-person after a hiatus due to the pandemic. Teams representing Norwalk Community College, Naugatuck Valley Community College, Northwest Connecticut Community College, Quinnebaug Valley Community College and Tunxis Community College gathered at CCSU on April 29, 2022 to show off their quadcopter designs and compete in a variety of challenges. The event was full of cheerful flights and spectacular crashes as each team had a video and presentation made to judges, plus 10 minutes to show what their quadcopter could do in-person.


Note: These items are just recommendations from us and what we have had luck with, you may choose to switch some items for other variations, which is completely fine! These parts are used to make a basic quadcopter. And you may wish to buy additional sensors for more capabilities of your quadcopter. Drones must be registered by the FAA on their website before flying outside and are required to compete in the competition.

For safety when flying near people or inside, propeller guards should be attached to the quadcopter. Propeller guards are required on the day of the challenge, and you can earn points by designing your own propeller guards. Keeping spare propellers and propeller guards on hand is a good idea, as minor crashes can damage them.

Pavo25 frame is made of high-quality PA12 material with strong and durable injected molding, which grants more stable flight and no fear of damage. The whole frame with pusher and duct design can generate more lift for the whole quadcopter, improving the ability of endurance and propulsion. Besides, the vibration damping structure for the camera mount is optimized to carry an action camera easily, allowing pilots to have an excellent experience.

Pavo25 whoop quadcopter is equipped with the Toothpick F405 AIO 20A FC V4 BMI270, it extremely reduces the weight while improving the ability of the ESC to continuous current 20A, and brings pilots more power to fly the Pavo25 quad! Meanwhile, 20A FC V4 has 2 pin connector ports for DJI Digital VTX and RX, just plug & play, less solder work needed, and super easy to install.

The nRF52 Quadcopter is a small miniquad that utilizes the nRF52 as both flight controller and for radio communication. The quadcopter uses the Physical Web and Web Bluetooth to make it as easy as possible for anyone to fly it.This is an open source project, and the source files are available here. See it in action here.

In most miniquads there is often used two or several dedicated chips which cooperates to make the whole quadcopter system work. Usually you have one main chip which controls the quad and keeps it stable in the air, and one chip which maintains communication through radio.

Thanks to the power of the nRF52, we can use only one chip for both control and communication. This single chip solution simplifies the electronic layout, and in turn will make the quadcopter both cheaper, and smaller if needed.The design and parts of the firmware is based on the Crazyflie quadcopter project by Bitcraze.

The quadcopter is a small PCB containing the nRF52 chip, one MPU-9250 inertial measurement unit, two barometers, one fuel gauge chip, a charger chip and 4 DC motors. Have a look at the schematics and PCB layoutand the bill of materials for more details.

The control loop is the most important part of the quadcopter, and its main task is to keep the copter in the air. Its secondary task is to make necessary changes in the quadcopters attitude based on the controllers input, and also halt any flight if anything goes wrong.

A rule of thumb is that as long as a control loop is performed with a frequency of 50Hz, the quadcopter will fly somewhat. The faster the control loop is beyond 50Hz, the more stable it will be, but a control loop is really performance heavy and demands a lot of processing power.

We have implemented some of the functionality in the Physical Web in the quadcopter. The quadcopter acts as an Eddystone beacon advertising a URL to a web page from which it can be controlled. That way anyone close to the quadcopter with Physical Web enabled on their mobile device will see a notification inviting them to navigate to the control page for the quad and actually fly it without having to install a separate app for that purpose.

The quadcopter is controlled with two joysticks and the pilot can adjust basic properties such as throttle, yaw, roll and pitch.The joysticks are made using the nippleJS library. This library makes it possible to add multiple joystick instances to the same webpage and registers touch events from them at the same time. On each touch event from the joysticks, the position of the joystick is registered, and from that the throttle, roll, pitch and yaw output is calculated.

In addition to the above mentioned basics, having a website as controller, gives us possibility to make a graphical interface to easily adjust many other preferences and settings for both the controller itself and the quadcopter. Here's what we have added for now:

On every new touch event on the joysticks, the throttle, roll, pitch and yaw is calculated and the output values are stored in a 20 byte long Uint8Array. These values are then sent to the quadcopter using Web Bluetooth. If there's no already ongoing GATT operation, the array is sent right away. A GATT operation in our code typically takes a little more than 20ms, depending on the connection interval set in the firmware. This means that all touch events and updated joystick data during one GATT operation will be discarded and not sent. The only exception to this is if the joystick is released, and the user wants the quadcopter to stop. This action will get priority and will be sent as soon as the ongoing GATT operation is finished, and the quadcopter will stop its motors. When flying the quadcopters, it is not noticeable (at least to us) that some joystick position data is discarded.

is this design for quadcopter is still valid or we need to make changes in the design or components for better performance. and how much better performance we can get with the current design. as I check the video on =ySj3hlKUGd0. can we improve its performance than this video's performance. and any more suggestion are welcome. Thanks.

Beyond Titan's surface, Dragonfly will also target its atmosphere and interior. During flight, it can collect measurements, much like instruments mounted on a balloon would. And it is also equipped with a seismometer that could use vibrations induced on the moon by its tidal lock with Saturn to gauge the ocean hidden beneath its crust, which scientists have suggested could be made up of ammonia-water or water and sulfate. Ultimately, the quadcopter's explorations may be able to last up to 8 years after landing before its nuclear power source peters out.

Use the Outdoor Quadcopter to teach beginners the joy of flying. While cadets and students are learning to navigate the skies, they will also become skilled in teamwork activities, eye-hand coordination, motor skills and a variety of disciplines in and out of the classroom. Cadets and students can even experiment with simple modifications of the quadcopter to allow for drone racing and obstacle course flying. Included with the quadcopter will be a remote-control transmitter, an extra battery and a battery charger. For further applications and activities of the kit, download the CAP Unmanned Aerial Vehicle Activity Booklet that is available in the AE Downloads and Resources section of the CAP member portal, eServices.

Aviation Connection: Youth can fly this remote-controlled quadcopter to learn more about the dynamics and forces of flight. Learning to fly this quadcopter will give cadets and students the opportunity to explore the thrill of potential careers in the use of remotely-piloted aircraft (RPA) or small Unmanned Aerial Systems (sUASs). Having youth suggest various jobs this quadcopter can do to be beneficial to people will allow further exploration of potential sUAS careers.

Many quadcopter UAV are gyro-stabilised to allow them to fly smoothly even in windy conditions. An IMU (inertial measurement unit) detects changes in the yaw, pitch and roll of the drone and sends data to a flight controller, which adjusts the output to the quad rotors to achieve the desired outcome.

Quadcopter drones are used in a wide range of professional applications, with the drone and payload specifically chosen to suit the application type. Industrial quadcopters are used in applications such as pipeline and infrastructure inspection; agricultural quadcopters can be used for crop monitoring; and survey-grade quadcopters with high-resolution cameras and/or LiDAR technology can be used for mapping, surveillance and surveying applications.

The typical flight time of a battery-powered quadcopter UAV is around 30 minutes. New designs have managed to extend this by incorporating battery cells into the majority of the structure. Hydrogen fuel cells, providing a greater energy density than batteries, can also be affixed to larger quadcopters to extend flight endurance.

Aerial imaging is the most popular application for quadcopter UAV, and many quadcopter manufacturers offer packages pairing multirotors with a specific camera payloads. These cameras may be integrated into multi-axis gimbals that allow the camera to be moved during flight and also reduce the effects of vibration.

Video and still image camera payloads can offer powerful optical and digital zoom capabilities to professional quadcopter drones, with 4K video and still image resolutions in the tens of megapixels, making them ideal for tactical and professional applications such as surveillance and industrial inspection. Some also offer FPV (First Person View) capabilities, in which low-latency video is fed back to the pilot via 4G/LTE to a screen or headset. FPV quadcopters are often used in the sport of drone racing.

On December 1, the Army announced that the 3rd Battalion, 75th Army Rangers are now fielding a dedicated quadcopter, built for military use. The Rangers are the second Army formation to field the Skydio-built RQ-28A drones. The fact that these drones are being used in more training shows how important quadcopters have become on the modern battlefield. 041b061a72


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