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Just a short reminder :
Everthing you read here comes without warranty or garantee,
you do this on your own risk.
MinimOSD & MultiWii
This is part of the official hardware mod wiki page now. Check the Wiki page for more mods !
Always searched for a cheap and good OSD which works together with MultiWii ?
Well what do we need:
- A minimOSD ( goodluckbuy.com or others)
- A MultiWii Controller
- Rush osd software ( can be find here : http://code.google.com/p/rush-osd-development/ )
Please check the Wiki located on the software page how to install and flash the software onto the MinimOSD.
There is not much to say about the process itself, just make sure you also did the charpter update for the MAX ... otherwise you will get funny pics.
No my concern was the batterie voltage. After I connected the OSD everything was ok, but the batterie voltage.
The reason for this is that the OSD asks the MultiWii board for the voltage, but since the hobbyking board doesnt have any A0 connect to the ATmega2560 I couldn't connect any voltage divider to the board. Now, this gives us the problem that the board can't tell us the voltage ... nooooo good. The batterie level is important for FPV flyers. So , what to do ( talked enough ):
- connect a 22k resistor to the batterie (+)
- connect a 1.5k resistor to batterie (-)
- solder an isolated wire inbetween the resistors
- now you can solder the wire to the ATmega328p
Ok, the hardware is finished. Now comes the software :D
Now download the attachement and upload the code using Arduino to your OSD.
Connect the OSD to Port 1 on the Hobbyking board since the MultiWii is only sending telemetrie info to the first serial port ( which is also conected to your ftdi ) !
That should do.
You have chosen the wrong port if there is no data shown ( its not the one where you can see to cables in this picture going to ).
The Wasp
look what we built last week :D
The Wasp technicals' review
Mechatronics :
6 x AX1806C motors ( From hobbyking.com )
6 x Hobbyking Blue Series 12A ESC
6 x Alu Cone propeller mounts ( from Hobbyking )
Frame:
Aluminium 10x10x1 square tubes
epoxy boards (gfk)
costs ( for the frame only ): about 10 Dollars
Flight Controller :
MutliWii Pro with GPS ( from Hobbyking)
FPV Setup:
25 mW 5.8 GHz Video transmitter (from Foxtech)
700 TVL Sony Camera ( from Foxtech)
E-OSD ( from Hobbyking)
CL Antenna ( self built)
Technical Data:
Flight Time : ca 7 min ( 2200mAh) / 10min (3000 mAh)
Weight ( without Batteries ) : 450g
Typ: Micro Hexcopter
P/I settings ( MultiWii) : 6/6 - LPF : 42 MHz
build time: 10h including soldering,fpv setup & and FC setup
estimated cost ( without FPV, inlcuding flight controller ) : 200 USD
liftn' shift (payload) : ca 200g with 3000mAh
Review:
Probalby not the best modell I ever built. Its is far to heavy and the engines might need bigger propellers. The Wasp needs about 1/2 throttle to hover and 3/4 to climg with a 3000mAh batterie. I would recommend to use a battery not biggger than 2200mAh. The only adavantage oft this copter is that it can carry a GoPro ( due to the way I built the frame ). I would also guess that the controller is not the best to use with this kind of modell. I will try a KK2 later.
vids will follow .....
If you are interested n the frame let me know ( go to contacts, there you will find my details ).