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HobbyKing Multi-Rotor Control Board V2.1 (Atmega168PA)

HobbyKing Multi-Rotor Control Board V2.1 (Atmega168PA)
HobbyKing Multi-Rotor Control Board V2.1 (Atmega168PA)

Based on and built in conjunction with the original QUADBoard designer Rolf and the popular and already well supported KK Control board, the Hobbyking Multi-Rotor control board is bringing Quadcopter madness to the masses with its breakthroughs in quality and price!

The HobbyKing Multi-Rotor control board uses Japanese Murata piezo gyros that are less sensitive to vibration than SMD type gyros and also features state of the art SMT manufacturing to ensure quality. This board also uses a user programmable Atmega168PA IC.

Size: 50.5mm x 50.5mm x 23.5mm
Weight: 14.5 gram
IC: Atmega168PA
Gyro: Murata Piezo
Input Voltage: 3.3-5.5V
Signal from Receiver: 1520us (4 channels)
Signal to ESC: 1520us

Whats is a Multi-Rotor Control board you ask?

The HobbyKing Multi-Rotor controller is a flight control board for 4 rotor Aircraft (Quadcopters). Its purpose is to stabilise the aircraft during flight. To do this it takes the signal from the three on board gyros (roll, pitch and yaw) then passes the signal to the Atmega168PA IC. The Atmega168PA IC unit then processes these signals according the users installed software and passes control signals to the installed Electronic Speed Controllers (ESCs). These signals instruct the ESCs to make fine adjustments to the motors rotational speed which in turn stabilises your Quadcopter.

The HobbyKing Multi-Rotor control board also uses signals from your radio systems receiver (Rx) and passes these signals to the Atmega168PA IC via the ail, ele, thr and rud inputs. Once this information has been processed the IC will send varying signals to the ESCs which in turn adjust the rotational speed of each motor to induce controlled flight (up, down, backwards, forwards, left, right, yaw).

Note: A user manual is available under the files tab.
*Royalties paid on each unit to Rolf, the original KK Board Designer.


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 Customer rated
Total of 776 discussions.
__alek  42 points - 7/18/2014
If you guys want to do real flying, no need for fancy controllers. I have had lots of boars (Naza, MultiWii, FreeFlight...) but this is one of my all times favorites. It was my first board and I still love it.
 RonRC 3543 points
Hi Alek, Agreed! Not only can this board fly nice and stable, but also do some great aerobatics as in your video. To me, I'm not sure why people want to spend more and have more of a headache in tuning when all that is needed for an aerobatic multi is this board or an i86 board. All the best and happy flying!
 __alek 42 points
Thanks a lot! I also have Phantom 2 for filming, but this one is great for having fun flying while not being afraid of having some crashes here and there.
Jean  1 points - 7/7/2014
I've got the same problem as John's : i checked the connections, reflashed the board successfully, bound the receiver as an aircraft then as a helicopter, reversed the throttle but nothing works. the led flashes when i plug the battery then stops. As anyone found any answer ? Thanks
 Evan 4 points
Hi Jean I answered Johns question
John  2 points - 7/1/2014
Help required - I have followed the instructions and checked the connections. I have bound the receiver as an aircraft. I have tried reducing and reversing the throttle setting. The controller and the ESC's will not arm. The LED will only flash on and off when supply is connected
 Evan 4 points
Hi John, I've experienced similar problems I solved them. Did you purchase the 2.4GHz 6 channel receiver? To arm the motors press the throttle sticks in the up. Make sure the front switches on the controller not on (flick them down). Then you should be all set. If you have a different receiver please let me know.
RonRC  3543 points - 6/19/2014
Hi all, If tuned properly and trimmed out well, this board can fly quite well on a multirotor. I used the V1 version of this board to build my first quadcopter and it flew great after getting it tuned right and trimmed out. All the best and Happy flying!
 RonRC 3543 points
Lately though, I only use these type boards to stabilize fixed wing aircraft to fly better in gusty winds. It makes them fly as if it were a calm day.
jose antonio  1 points - 6/15/2014
alguem pode me ajuda gual a melhor atualizaç*ao ..meu aki ate tenta levanta voo e kai...
Customer Reviews
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Overall Rating
Samo Cankar
3 thumbs up!
Better Board than version 1 for almost the same price. I damaged V1 in a crash and then bought this one..

With V2 you can fly Hexacopter. Very easy to use and program with appropriate usb flash tool (from eBay)

If board had smd gyros instead of Piezo (for less drift) it would be a winner.

19 comments. Reply..

Overall Rating
2 thumbs up!
Una pasada venia dentro de una cajita de goma espuma negra de esa prensada, la he usado para poner la tapa debajo de la placa para evitar las vibraciones y luego tapare todo el conjunto con el resto, en poder pongo fotos. La placa esta ok con ese enbalaje no le puede pasar nada un 10 para hobbyking. Los pines del motor M5 y M6 no están soldados, acordaros de soldarlos po si algún día hace falta y os toca desmontar todo. Saludos.

3 comments. Reply..

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Overall Rating
1 thumbs up!
The board works very well. Flashed it with the AVR programmer I obtained off ebay and worked like a charm. Maybe one of the downsides is the bottom of the board where the solder mounds are is slightly dirty. I'm not sure if this is from the flux that was used to solder the board or if its just poor quality control. Either way it is purely cosmetic and does not affect the functions of the board. Also keep in mind that when you are taking the board out of the foam box it arrives in, be sure to pull it straight out - as pulling it out at an angle will cause the vertical yaw gyro to bend. Had this happen to me, but I realized what was happening and bent it right back into place.

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Overall Rating

Like it?
good source for multicopter. fly well with kk firmware

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Like it?
This board is a great deal for those starting out in multicopters. I think it's awesome that HK has these at such a low price. Other vendors charge $10 each just for the gyros. I couldn't stop laughing when the other vendors boards went from $80 to $40 once HK started selling these, and theirs are still one and a half times the price!!!. Now if HK would make one with mems gyros and camera compensation at a crazy low price they would dominate the multicopter comunity!!!.

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