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While this board has been superseded by the bit version, this 8-bit version is still available in the marketplace and is actively used and supported. It still produces outstanding results. Without the extension board this controller can be used for building high-quality 2-axis camera stabilizing systems. The controller can also be used for 3-axis control systems with the addition of the extension board. In addition the management software is backward compatible, so alexmos board buyer is possible or preferred to use a new version of the GUI SimpleBGC's management software with this board- giving an improved experience with this board and also further making upgrade to the bit board as easy as possible.
In alexmos board buyer, gimbal based on BLDC motors is very similar to regular gimbal based on hobby servo. The absence of gear - a fundamental point that lets you use the inertia of the system is not to harm, but for good.
In case of ideal balance of the camera, the rotor rotates freely without resistance and even without need of applying extra control force, which allows the camera to unleash from the disturbance from UAV frame. In addition, there is no backlash inherent gears or belts. To control the motors, a special controller was designed.
It receives information from gyroscopes and accelerometers mounted on the camera platform. A standard IMU algorithm is used to define camera inclination angles. With the remote control, operator sets desired tilt angle. PID-controller calculates the amount of compensation and send command to the power unit, which controls the current in the windings and thus the direction of the vector of magnetic field in the stator.
Magnetic field moves the rotor to the right position. Due to using IMU, mechanical part of the system is a very simple.
There is no need in complex and expensive high-definition encoders for each axis. Just mount tiny IMU board on the camera platform, connect wires to controller and motors and all done! You may run this on a PC, Mac or Linux. A version is also available for Android. The board has upgradable firmware.
Follow the link for the 8-bit boards for the correct information. To get all of this information including the firmware, User Manual and GUI software see the download section of our website. While there is a User Manual for the 8-bit version, since you may use the GUI alexmos board buyer the bit alexmos board buyer with this board the 8-bit it may alexmos board buyer be instructive to obtain the newer and more thorough User Manual for the newer bit version.
This is especially pertinent if you choose to use the newer version alexmos board buyer the GUI alexmos board buyer this board. Remember however you can only use firmware for the 8-bit board on the 8-bit board. That you must obtain if needed from the download section for the 8-bit board. Connection diagram Kb Stand alone alexmos board buyer is not possible.
When deploying the 3rd axis extension board use the same kind of motors as for the main controller. Do not use regular motors that are for planes or multi-rotors. The internal resistance for power motors is almost zero and it will overload and likely destroy the controller board.
Use only special motors with windings designed for gimbals with resistance between the phases not less than 5 ohms. The choice of motors internal resistance depends on the target voltage. For 4S it the minimum resistance moves up to about 8 or 10 Ohms. At 5S a good choice is 12 to 15 Ohms minimum.
A maximum of about 30 Ohms is suggested though it may still be possible to extract enough power from the drivers to operate well at higher impedances depending on the load of the application. Always observe current ratings 5. To setup the controller, alexmos board buyer special GUI is used. The principle of the camera stabilization using brushless direct drive motors In fact, gimbal based on BLDC motors is very similar to regular gimbal based on hobby servo.
It gives impressive quality of stabilization compared with regular servos. Basic requirements for the mechanical design of gimbal frame The possibility of precise balancing on three axes.
The better the balance, the lower the current need for stabilization. Mechanical rigidity of bearing elements to prevent resonances from working propellers in flight. Minimizing friction in the joints.
Alexmos board buyer better the gimbal axis are unleashed from UAV camera platform, the less effort is required from the engine to stabilize Elimination of vibrations from the main UAV frame. The vibrations have a negative impact alexmos board buyer the quality of the alexmos board buyer.
But another negative effect in this system is that vibration will lead to self-excitation of the alexmos board buyer controller.
