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> Multi-Rotors & Parts > Electronics
> Multi-Rotors & Parts > Flight Controller


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.


This product available from a warehouse near you!

Weight: 99g
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Price  $12.99

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 Customer rated
Total of 802 discussions.
andreasmon  2 points - 1/16/2015
hello, Acc calibration wrote not ok,quadcopter did not unlock.I put it down surface level and steady.I also made many times factory reset and all the settings again for the begining...but nothing....gyro not ok!!!! Any help* Thank you.
raphael  1 points - 1/13/2015
is this ready to use on a quadcopter i am new to all this stuff what is firmware
 RonRC 4011 points
Hi raphael, It comes configured with a rudimentary plus configuration firmware. If you flash it with newer plus configuration firmware it will fly much better. Most people go with flashing multirotor control boards with X configuration. I can tell you from experience that flashing with newer firmware will make these boards fly much better. Hope this helps and happy flying!
Эдуард  1 points - 1/3/2015
Anyone selling 2 of these controller ? bought but to fly with them and did not work. the second took on possible parts. boxes of the original has not survived. not correctly picked up other components and to engage in free time.
 RonRC 4011 points
Hi Э*д*у*а*р*д*, If you look in the files tab, it will show how it is to be connected in "Correct Programer Connection". You will also need to download and run "kkflashtool" on your computer. Once flashed with new firmware, these boards can be made to fly very stable. All the best and Happy flying!
Abhijith  16 points - 12/16/2014
I have usbasp programmer, i need information for flashing this board to tricopter mode, is it possible? If its possible which is the suitable firmware?
Thanks in advance
 Julian 18 points
Do a quick search on Google for the name of the board and for the required firmare, there are millions of free ones out there in the internet.
Julian  18 points - 12/9/2014
Not working I think I did not arm it
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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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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