Building a drone copter

cobito

That could have been avoided with a GPS module and programming the electronics so that the drone goes to some coordinates in case of losing the signal.

@CNCBCN:

by the way can these drones rotate 180 or 360 degrees on the X Y axes? like a helicopter to make ourselves understood

With a gyroscope they can rotate around the xy plane. A gyroscope adds about €130 to the design. It should not be confused with the measuring gyroscope (which informs the electronics of what the drone is rotating in the 3 axes, but which does not modify its position.

I would like not to have to use gyroscopes but servos that modify the angle of the motors. I think it would make it much more manageable and agile, although the design would become considerably more complicated.

CNCBCN

I've been thinking for a while about how those bugs work and I've come to the following conclusions (most likely erroneous) the rotors are numbered as follows:
R1 R2
R3 R4
if you increase the power of R3 and R4 you modify the Y axis if you then equalize the power of all four the bug moves forward. For backward it's the same but inverted and for the sides more of the same but with R1 and R3 (or R2 and R4) but to turn I think it has to be "headbutting" this already takes a while: R1 at 50% R2 40% R3 60% R4 45% is it more or less like that?

cobito

@CNCBCN:

I've been thinking for a while about how these things work and I've come to the following conclusions (most likely incorrect). The rotors are numbered as follows:
R1 R2
R3 R4
If you increase the power of R3 and R4, you modify the Y axis. If you then equalize the power of all four, the thing moves forward. For backward, it's the same but inverted, and for the sides, more of the same but with R1 and R3 (or R2 and R4). But to turn, I think it has to be "headbutting". This already takes a while: R1 at 50% R2 40% R3 60% R4 45% Is it more or less like that?

I don't know if your method would work. They usually use (or so I think) gyroscopes. They are devices that have a disk spinning inside at high speeds so that when the disk is rotated on its axis, a force is exerted on the supports. This is what segways use to keep their balance.

Sylver

And a tail rudder with horizontal propeller(s)? To propel it forward and backward, and with the tail rudder it would already turn… You would have to place these elements well, but it would work according to my calculations, airplane style...

Edit: Even a single rotating propeller would be feasible, like in hovercrafts, it's all about getting a good design.

cobito

@Sylver:

¿Y a tail rudder with horizontal propeller(s)? To propel it forward and backward, and with the tail rudder it would already turn… You would have to place these elements well, but it would work according to my calculations, airplane style...

Are you referring to a fifth engine that turns the machine? The idea is to include the fewest number of elements possible, because every extra gram reduces efficiency.

@Sylver:

Edit: Even a single rotary propeller would be feasible, like in hovercrafts, it's all about getting a good design.

It must be taken into account that a single engine with a single propeller does a quarter of the effort. To save costs it's fine. You would have to calculate if it could lift everything.

CNCBCN

this is the design of Sylver
http://1.bp.blogspot.com/_8IhgYlS934s/TTNeeTONBHI/AAAAAAAAABs/IF4rbVa2BYc/s1600/gorro-helice.jpg

defaultuser

The truth is that the method of playing with the engine regimen through electronics is the one that will make a lighter design.
Lighter, and with more load capacity consequently, and initially also more economical.

incrediboy

@defaultuser:

The truth is that the method of playing with the engine regimen through electronics is the one that will make a lighter design.
Lighter, and with more load capacity consequently, and initially also more economical.

and also much more difficult to work well considering the air currents.

Sylver

@CNCBCN:

this is the design of Sylver
http://1.bp.blogspot.com/_8IhgYlS934s/TTNeeTONBHI/AAAAAAAAABs/IF4rbVa2BYc/s1600/gorro-helice.jpg

Exactly! How did you know? Did it remind you of your childhood? :D:D:D

CNCBCN

@Sylver:

¡Justamente! ¿Como lo supiste? ¿Te recordó a tu infancia? :D:D:D

JODER como lo sabes :D:D:D como disfrutaba dándole con la mano abierta :D:D:D:D:D

cobito

@incrediboy:

and also quite more difficult to make it work well considering the air currents.

I think that playing with the engine settings is the ideal way. The user does not control the revolutions of each engine, but rather the microcontroller does it totally automatically adapting to the conditions with a measurement gyroscope and accelerometer.

In this way, the user just tells the "avionics" what they want the drone to do (for example, to move forward at a certain speed) and it will make the appropriate calculations to offer the right setting for each engine and that what is desired is fulfilled, whatever the environmental conditions (within certain limits).

Sylver

What if you place the motor that acts as a rudder right in the center of the structure? Under the body of the drone right in the middle, so the weight is balanced, and to lift the entire structure you will only need a little more power in all the rotors, but if the motor is not very heavy it will only take a few revolutions.
I see it as less complex and if done right it would be very effective.

Regards

CNCBCN

Sylver …. it's not for nothing but the "Rudders" always get put behind, they could be put in front, but not in the middle .
the only more or less viable and cheap thing would be to do the three motors and a servo of ¿180 degrees? two motors in front and one behind connected to the servo, it would turn on the Y axis to give direction and the rest as I commented before

Sylver