![]() What I have now is a prototype plan for the power distribution, some 3d printed parts: as head of the arm which envelopes bearings, axial and radial, pulley, shaft, rotor grips, collective arm and 3d printed propeller blades (these blades are exceptional and and very unique,overall diameter with grips is 440mm). I’d wish to see Emlid make a mode for collective pitch quadcopter model - I think it will be more efficient and popular in the end game market in the future. I’m counting on that I could use that code to convert it for my purpose - but I don’t know code of any kind. I don’'t think Navio has a ready setup for to control 1 motor and 4 servos as quadcopter, what only comes to close is a single motor craft which is still different. The craft would be controlled with raspberry pi - navio flight controller, and here I think is the problem. Arms have, for now what I’ve planned - to have 550 size heli tail rotor grips and collective pitch via servo. Short story, I am building a quad rotor (440mm sized rotors), which use one central motor and distributes that power over belt driven transmission to 4 arms. But I feel I started this so that you didn’t fully understand my end goal. Hey, although a very long lasting wait for my answer I will continue this. To save time I’d check that out first for any tips. The guy who created Tilt said (in one of his announcement videos) he had great difficulty to customize one of the other autopilots (think it was CleanFlight or BaseFlight). It would be good to get frames like tilt, variable pitch and maybe later full thrust vectoring supported in APM and other autopilots. Hopefully you intend to keep it open source so we can all share and build on top of great ideas. For example, imagine an FPV race where the rotors can tilt in opposing directions to air-brake on one side and power-through on the other, effectively going around a corner flat like the drone is on rails! The software to control such drones is going to be complex when used to full potential, so you can take advantage of the Navio/RasPi2 here. It would need either a very large drone or better some kind of custom made on-arm gimbal. That’s not possible with current/basic servos I think. In this case we would also need to tilt the motors side to side. On the serious side that mock-up drone with “thrust vectoring” (not just variable pitch) is really more like one of the Avatar ships. To help you with some inspiration check this out (just fun, it’s not real): As you plan to leave your ESCs pretty much constant that should not be a problem with lower update speeds, or maybe you can find good digital servos supporting fast updates. ![]() One issue you will have to consider is servo update speed, similar to another question posted here the other day. ![]() With linear servos (screw-thread style) maybe the arms attach directly onto them. I was inspired by the Tilt drone and Avatar film, with independent servos for each arm. It seems the mixer or the output 8 have a problem.I was thinking about such a design as the “ultimate” drone, so good to see somebody trying to get such a thing working. I did try to connect the ESC1 on the output 3 and the motor turns according to the output 3 This mixer generates a full-range output (-1 to 1) from an input in the (0 - 1) ![]() This mixer assumes the 4 in 1 esc is connected to the output 8 When I upload a log on flight review I can see that my radio inputs are well detected and I can see that my 4 outputs for servos are ok put the 5th output (motor) is absent.ĭoes anyone have an answer ? Do I have to add a “custom output” even if my mixer is ok ?Ī F4 SD omnibus board with 8PWM output, groups : ġ Racerstar RS20Ax4 20A 4 en 1 Blheli_S Opto ESC 2-4S with motort 1 port connected to output 8 of the board I did manage to make a firmware with a custom mixer and a custom config only calling for the mixer => servos move with consistencyīUT i do not have response from my motors (for the moment I only connected one motor to the port 1 of my 4 in 1 ESC). I am building a type of quadcopter which requires an independant control of thrust and other parameters (think about a variable pitch quadcopter). ![]()
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