BEC: the acronym of battery eliminator circuit, it indicates that the ESC is supplied open source quadcopter hardware failure an internal voltage regulator. LIPO charger and lithium-ion battery. If nothing happens, download the GitHub extension for Visual Studio and try again. I am having a persistent and very irritating issue. Before using it, you will have to modify the remote control, by removing the potentiometer on the o;en of the antenna and by mounting open source quadcopter hardware failure 3-position unipolar deviator, to which you will connect — between the centre and the ends — qusdcopter 2. Add WebGL?

Decent radio transmitters come with this feature such as the Taranis, it shouts at you when signal strength drops below certain level so you can make a turn in time. Also make sure failsafe is setup properly on your radio receiver and flight controller. But since they are very exposed to crash damages, ripped wires, bent shaft or loose magnets can happen. This involves tuning your PID properly, clean your power system noise with capacitors.

In extreme cases where nothing seems to help, you can also consider soft mounting your FC or even motors. Another common issue with motors are long screws. If screws are too long they could touch and short the wildings in the motor. This could cause the motor to overheat, or even burn out the motor. Here is how to determine the correct length for motor screws.

If 1 side of the motors are warmer than the other side, this usually suggest there is a problem with center of gravity COG. For example if the back is heavier than the front, then your back motors are going to work harder to keep the craft in the air and thus get warmer.

When losing video you have absolutely no idea where the quadcopter is flying into, and this is extremely dangerous to people around. When this happens the best thing you could do is probably cutting throttle immediately, let gravity take care of the rest and crash your quad in to the ground.

Most people fly 5. Trees and walls are very effective at blocking 5. Getting jumping lines in your video during flight? It could be noise in your power and adding some capacitors could help.

Also make sure your FPV gear shares a common ground ground are connected together. To get the best possible signal, FPV antenna is probably the most important factor. It could save someone hours to find out the problem. Before a flight session, remember to check all of your bolts and nuts are fastened, especially the motors.

After a rough landing or crash, triple check your props and frame for damages as well, do not fly with propellers with crease lines. I have two quads that reboot either when I flip hard or when they get shaken a little bit harder. So when I accidentally touch the ground for example, it is as if the battery gets disconnected, and then connected again after seconds, beeps and I can fly again. I also resoldered all the esc connections and will check for any wires touching the frame.

Other things that come to mind… battery cable too thin? Can faulty escs produce this kind of error? I have tested it with diefferent batterys and it happens every time at the end of the battery.

I Have a happymodel mobula7 with the f3 fc and a f4 as a spare. I have had this quad for about 4 mos with no flights as of yet , not due to lack of trying but I have another new fault.

Any suggestions would be so deeply appreciated. Please can you help, this is a recent gift. Many thanks. Handset beeping but drone not responding to it. Know what it is? Hey Oscar! Hope you are in good health. I am having a very frustrating problem with my quadcopter. Now, the motors are rotating fine if I am powering the arduino via my laptop USB port.

But whenever I am trying to use my battery as the power supplier through the Vin pin of Arduino,,, the more I am increasing the throttle, the receiver gradually loses the power. So , before even taking off, the motors stop to functoion.

After a couple of seconds, the receiver again gets adequate power, and all of a sudden, the motor starts to rotate and again the receiver loses full power. The same cycle repeats again and again.

I am using a mah, 35C, Please help. I am having problems with my fx quadcopted. The controller keeps vibrating do you know why this is? Hey Oscar, I know this is an old thread but please be kind and help me out here. I am having a persistent and very irritating issue. It happens randomly, and unpredictably. I hope you can help me out with a puzzling problem about my first quadcopter build of a FlexRC Mini Owl.

During testing the 50C LiPo drains alarmingly quickly. Betaflight has also been properly set up and calibrated — except for the PIDs which have been left stock because I have no idea how to mess with those yet.

To my shock, I almost immediately started getting low battery alarms from what was a fully charged battery. It must have been hovering at half throttle for less than 30 seconds before I saw the voltage drop to After I disarmed the quad the battery recovered to around Wishing to blame it on a bad battery I tried my other 2 MAh batteries and I got exactly the same result.

I made sure to select the parts that were either recommended motors and props from the FlexRC site or familiar my pre-built Helipal Storm Owl uses the BRF3 and Littlebee ESC thinking to avoid major issues with compatibility or suitability. Could the ESC be faulty? The motors do not seem to be damaged or burnt out and they do work because the quad can hover. Could the batteries not have a high enough C rating? Please could you repost this question on our forum?

Hi Oscar, I am having a problem that is driving me nuts. I am a first time quadcopter builder. I am building one as a project with my son. We have 2 of them. One was from ReadyToFlyQuads and had all the connections pre-soldered. The other we soldered the connections ourselves. Even if our board supports both Multiwii and MegaPirateNG, in this article we will describe only the first one of the two in detail; given that Multiwii is for a general usage, we need to configure it before loading it on the board.

For the purpose, please load the last Multiwii version from website in our case, it is version 2. Once this has been done, please proceed with the following configurations: the Multiwii failsafe monitor is a form of protection that — in the case of contact lost with the receiver — prevents the quadcopter from advancing. As soon as the failsafe is detected, the software will try to avoid the crash by keeping the quadcopter stabilized by means of the internal sensors and by gradually cutting off power from the motors, for the landing.

It is possible to enable a buzzer that will acoustically warn about the operating state; you need a buzzer having an electronics that is compatible with a 5V power supply, to be connected to the board at the contacts marked as buzzer, and please be careful with respecting the polarity.

The acoustic warnings consist in a sequence of three beeps having a variable duration, that depend on the operating state. The durations of the beeps and of the pauses are defined as follows:. Each warning has different priorities: the first ones have a greater priority and are:.

Additional acoustic warnings have been provided, that is to say:. In order to use this function you have to remove the comment characters on the define VBAT line of the config. The gyroscope is the main sensor and the only essential one: thanks to it, it is possible to compensate possible rotations with respect to the three axes and therefore to prevent that the quadcopter spins around itself or that it turns upside down.

The gyroscope suffers from a deviation that in time prevents from knowing the absolute angle of the vehicle; for this reason the gyroscope alone does not allow to keep the quadcopter perfectly levelled to the ground. The accelerometer takes care of this problem, by supplying an absolute angle for the bearing and by guaranteeing that the quadcopter remains horizontal, and avoids that it may slip towards some direction.

Unluckily, the gyroscope — and even more, the accelerometer — that we use they are MEMS are influenced by vibrations and, as you will see, we will have to take them into account.

In order to better the stability it is possible to filter the values acquired by the IMU module, especially if there are still vibrations, and notwithstanding all the precautions placed in the mechanic construction; the line on which to act is the following one:. The magnetometer, however, determines the magnetic north, which differs from the geographic north because of the magnetic declination: things get more complicated by the fact that the latter changes in time.

The magnetic declination is therefore the angle between the direction of the magnetic north and the geographic one; in order to know its value in the point where you stand you may use the service offered by the website.

Once you have set your position, the website will give you the magnetic declination, expressed in degrees and minutes and with a sign that you will have to convert in degrees by means of the following formula:. Please remember that before any measuring you will have to calibrate the sensor. The IMU GY module that is used in this project has — in addition to a gyroscope, an accelerometer and a magnetometer — a barometer that is suitable for measuring the atmospheric pressure.

To entrust this to an automatic function helps quite much and becomes essential when flying with the help of the GPS. Even in this case you may carry out a simple test, thanks to the data from the telemetry: if the reading of the altimeter suffers from too many disturbances, when activating the gas, it is the case to carry out a shielding. It is often possible to see — in some quadcopters — the usage of a GPS with an integrated compass, installed on a high tree, far from all the electric circuitry: it is not a case.

The barometer is used in order to determine the height from the ground, on the basis of the atmospheric pressure, which varies depending on the altitude; the influencing factors — or those that somehow make the pressure change — are many first among them the weather conditions , thus preventing the exact determination of the absolute height. Such a problem is not very relevant if you are flying at a high altitude, but is a critical one if the multicopter is close to the ground: an error of some decimeters is not dramatic at 50 meters from the ground, but it makes the difference between a soft landing and a crash at one meter from the ground.

In order to obtain an accurate indication of the approach to the ground you may use a SONAR ultrasound module, but at the moment we write the software V2. Therefore you should modify the firmware by yourself. The IMU module that has been chosen for this project is a 10DOF 10 degrees of freedom , a very complete one, equipped with the last generation digital sensors, that are high accuracy and low noise ones.

As hinted before, it includes a gyroscope, an accelerometer and a magnetometer with all the three axes in addition to a high sensitivity barometer. Please insert the IMU module in the specific connector and make sure that the connection is excellent. In order to be sure that the IMU module does not suffer from vibrations or that it may move, it is appropriate that it is fixed to the printed circuit board; please do not use metal elements but prefer plastic ones, such as for example some small nylon screws.

At a first impression it may appear chaotic and complicated, but you will see that you will soon become familiar with its various functions. As you may see, the software supports even a GPS, a sonar and an optical sensor. Please keep the board in front of you, with the arrow pointed onwards; by rotating it towards right and towards left, the ROLL indicator will change accordingly.

For this project we used a cheap — but anyway complete — six-channel remote control, signed as FS-CT6B. It is a remote control operating on the 2. Before using it, you will have to modify the remote control, by removing the potentiometer on the left of the antenna and by mounting a 3-position unipolar deviator, to which you will connect — between the centre and the ends — two 2.

The MODE2 is also the mode used on the toys, and it is therefore the most familiar one in this kind of applications. The transmitter, the receiver, the cable for the connection to the PC and the software for Windows are included in the package: the batteries are not, however. Since the 2. Please make sure that the transmitter is turned off, then insert 8 Mignon batteries also known as AA batteries in the battery holder: it is better if they are of the rechargeable kind.

Please turn off the receiver, remove the jumper and connect a test servo to one of the channels, and verify by means of the remote control that everything works properly. The correct procedure for booting the system always consists in turning on the transmitter first, and only later the receiver in this case, the quadcopter ; vice versa, in order to turn the system off please start from the receiver and turn off the transmitter last.

Please connect the receiver to the board by using eight small cables with a female-female end, accordingly to the instructions in Table 3. At this stage you may make the transmitter and the board operational and to analyze the data received. In order to obtain this configuration it is needed to opportunely program the transmitter, and then we will use the dedicated cable supplied in the bundle , so to connect it to the PC.

The cd rom supplied in the bundle contains both the drivers and the software, that will be installed according to the normal procedures. It is essential that each channel goes under the value of 1, and over the value of 1,, since many functions of the MultiWii software are implemented only if the channels exceed these limits. We will end then by talking about the management modes from smartphone. PITCH: it represents the pitching, that is to say the oscillation on the transverse axis.

ROLL: also said rolling, it is the term used to define the rotation Open Source Quadcopter Hardware Youtube of the model on its longitudinal axis. YAW: the movement around the yaw axis, that is to say the rotation of the model on its vertical axis. CLASS: it indicates the category the quadcopter belongs to, that is identified from the transverse distance between two engines expressed in millimeters. ESC: the acronym of electronic speed controller, that is to say the power driver for the brushless engines.

BEC: the acronym of battery eliminator circuit, it indicates that the ESC is supplied with an internal voltage regulator. PDB: the acronym of power distribution board, that is to say the printed circuit board that is used for bringing the battery power to all the ESCs. BIND: it indicates the association between the remote control and the receiver as in the RC radio equipment.

PID: it indicates the triad formed by the proportional, integrative and derivative parameters of a control. Board quadcopter Open Source. SimonK ESC.

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