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newbie - how does a qaudcopter work? Answered

Hey there, I am thinking of building a quad copter, but am not quite sure, how they work, hopefully someone can clarify this for me.  Do all the motors connected run at the same speed, then  to move directions you increase the speed of the motor that deals with that direction. For example left control button will increase the speed for the left motor causing it to move left?

Also will I be able to get a working prototype using those components below?

4 x 7mm Brushed Motors

4 x propellers.

1 x Arduin UNO 

1 x HC-05 Arduino bluetooth module

Am planning on dealing with the controls by writing a android app that sends command to the Bluetooth module on the arduino. 

Discussions

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MDheliMech

5 years ago

Google QSC tricopter. It is a very good series of videos that take you through all of the electronics, etc. The series is geared toward a tricopter, but there are also plans for a quadcopter frame. I had absolutely no experience with any RC flying or building. I was able to build, and fly the QSC tricopter.

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Raphael1MDheliMech

Reply 5 years ago

Thanks a lot, learned a lot from the QSC tricopter videos XD

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MDheliMechRaphael1

Reply 5 years ago

Glad I could help. I built one myself with very little skill, and the basic tools I have laying around. No fancy CNC machine, or lazer cutter.

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FoolishSage

5 years ago

I am no expert on quads but i have a general understanding of their working.
You have four motors, each with its own controler, receiving signals from a central unit. This unit has sensors telling it its rotation in three dimentions and probably a bunch of other signals depending on what is installed. If the central unit notices a dip to one side it redistributes power to compensate. It does this very quickly.
Once the remote controler sends another signal to the central unit ("go up" "go left" etc), it will once again redistribute power to obey. The human doesnt control each motor but gives general directions which are interpreted.

More advanced models will have more sensors (translation, gps, ultrasound, etc) more equipment (cameras, gimbals, etc) and programming (return to base, follow path, hold possition, etc)

The folks over at www.diydrones.com can probably help out further

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mpilchfamily

5 years ago

Bluetooth will work but you only have an effctive range of about 40 feet. If you want better range you'll want to get an actual RC remote and receivers.