Multiwii and cheap RTF quadcopter (V929)

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Erwin
Posts: 2
Joined: Thu Aug 23, 2012 5:17 pm

Multiwii and cheap RTF quadcopter (V929)

Post by Erwin »

Hi All,

I want to get started on my first multiwii project. Since I'm new to Quadcopters, I was thinking of trying to buy the hardware as much ready to fly as possible. I would like to concentrate on the software anyway.

Ideally I would like to start out with something like the V929 beetle quadcopter:

http://www.banggood.com/Wholesale-Wltoys-Ladybird-4-axis-Dexterous-Mini-Ufo-Rtf-p-46172.html

It is simple and light and reviews are very good. It has a small receiver/flight controller board which directly drives the brushed motors.

Image

Furthermore I'm thinking about buying a sparkfun pro micro arduino board, because it is light and has an integrated USB connector.

I searched on the forums a lot about using brushed motors and a pro micro board with Multiwii and both seem to be possible. However I still have a few questions about connecting everything together.

The v929 receiver has to be connected to the arduino board. If I understand correctly, it outputs a PWM signal that drives the motors. Can this signal be used as an input for the arduino board with Multiwii?

Then the arduino board has to output a signal to the brushed motors. I understand that in the multiwii software it is possible to enable PWM output for brushed motors, however to operate properly, mosfets has to be used in between.
Is this correct?

Another way to approach this is to loose the receiver board altogether and replace it with the arduino board with a separate receiver. Will this be a better idea?

arkcom
Posts: 6
Joined: Sun Aug 19, 2012 10:35 am

Re: Multiwii and cheap RTF quadcopter (V929)

Post by arkcom »

Might be simpler to buy something like this - http://www.goodluckbuy.com/cjmcu-mwc-fl ... pter-.html

Seems more like what you're looking for.

Erwin
Posts: 2
Joined: Thu Aug 23, 2012 5:17 pm

Re: Multiwii and cheap RTF quadcopter (V929)

Post by Erwin »

Thanks, looks interesting. If I understand correctly, I only need a receiver, transmitter and lipo to be able to fly.
Only how do I program this?

arkcom
Posts: 6
Joined: Sun Aug 19, 2012 10:35 am

Re: Multiwii and cheap RTF quadcopter (V929)

Post by arkcom »

You need a serial cable, like FTDI or similar. It runs multiwii, and I think it uses MPU6050.

tovrin
Posts: 705
Joined: Tue Sep 20, 2011 4:08 pm

Re: Multiwii and cheap RTF quadcopter (V929)

Post by tovrin »

I love how it says ;
Programmed before shipment,can not provide original code, it is necessary to gain basic foundation if you want to debug

but yet its labeled as a MWC product...

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