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HobbyKing™ KK2.1HC Multi-Rotor Hard Case Flight Control Board

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HobbyKing™ KK2.1HC Multi-Rotor Hard Case Flight Control Board


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This is the KK2.1HC without the programmer (sold separate). Perfect for those who already have an HC set and programmer.

The next evolution of the rotor revolution is here!! The KK2.1HC (Hard Case) is packing new found power with updated sensors, memory, header pins, hard case and remote programmer.

The KK2.1HC is the next big evolution of the first generation KK flight control boards. The KK2.1HC was engineered from the ground up to bring multi-rotor flight to everyone, not just the experts. The remote LCD screen and built in software makes installing and setup easier than ever. The screen and programing buttons have been relocated to a remote plug-in programmer and a hard case installed, this makes the KK extremely durable. The plug in programmer (sold separate) uses the exact same format as the onboard version and can be plugged in at anytime for a quick value change. This new design allows the KK to be installed in frames where access to the onboard buttons and screen was an issue, you can even leave the cable plugged into the KK side and run it out for access to the programmer. The Hard case still retains the standardized 45mm mounting holes and has the buzzer is now internally mounted. Mounting locations and damage to the LCD screen is a thing of the past.

A host of multi-rotor craft types are pre-installed, simply select your craft type, check motor layout/propeller direction, calibrate your ESCs and radio and you’re ready to go! All of which is done with easy to follow on screen prompts!

The original KK gyro system has been updated to an incredibly sensitive 6050 MPU system, making this the most stable KK board ever and allowing for the addition of an auto-level function. At the heart of the KK2.1HC is an Atmel Mega644PA 8-bit AVR RISC-based microcontroller with 64k of memory. An additional polarity protected header has been added for voltage detection, so no need for on-board soldering. A handy piezo buzzer is also included for audio warning when activating and deactivating the board.

The KK2.1HC added polarity protection to the voltage sense header and on-board buzzer. The voltage sense line has been updated for better accuracy. The Hard case is clearly labeled, making installation and connections a snap.

If you’re new to multi-rotor flight or have been unsure about how to setup a KK board then the KK2.1HC was built for you. The 6 Pin USBasp AVR programming interface ensures future software updates will be quick and easy.

Size: 55mm x 55mm x 19mm
Weight: 32g
IC: Atmega644 PA
Gyro/Acc: 6050MPU InvenSense Inc.
Auto-level: Yes
Input Voltage: 4.8-6.0V
AVR interface: standard 6 pin.
Signal from Receiver: 1520us (5 channels)
Signal to ESC: 1520us

Firmware Version: 1.6:
Pre-installed firmware.
Quadcopter +
Quadcopter X
Hexcopter +
Hexcopter X
Octocopter +
Octocopter X
X8 +
X8 X
Singlecopter 2M 2S
Singlecopter 1M 4S

(Custom Mix via the "Mixer Editor" option)

The Mixer Editor allows you to adjust where and how much signal the motors receive from stick input and sensors. This allows you to create any configuration possible with up to 8 motors or servos.

* Note: The programmer (not included) does NOT need to remain plugged in for the KK to operate, Simply plug in, program, unplug then fly

** Note: It is all ways recommended to update to the latest software version as part of your initial setup.(This is different than v1. 6 for KK2.0)  

*** Note: The KK2.1HC uses the same firmware as the KK2.1~2.1.5

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Bertje S | Verified Buyer

  • Quality
  • Overall
  • Value

Zeer goed

Apr 24, 2021

zeer stevig kan tegen een stootje jammer dat ik geen gps kan aansluiten.

Bertje S | Verified Buyer

  • Quality
  • Overall
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Zeer goed

Apr 24, 2021

Stevig kasje handig met programeren met exstern scherm, maar ik kan geen gps aansluiten dat is jammer. verder zeer zeker een goed produkt

Owen | Verified Buyer

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Feb 03, 2021

Did not work upon arrival. Very disappointed

MarBet | Verified Buyer

  • Quality
  • Overall
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Efficace et bon marché

Jul 09, 2020

C'est le deuxième que j'achète et il est d'une stabilité incroyable

Willemjan | Verified Buyer

  • Quality
  • Overall
  • Value

Very stable

May 27, 2020

Flys good after buying a programm board

Frantisek | Verified Buyer

  • Quality
  • Overall
  • Value

Everything O.K. including owners.

Mar 30, 2020

Still very useful.

frank | Verified Buyer

  • Value
  • Quality
  • Overall


Jan 21, 2020


vdsconnect | Verified Buyer

  • Quality
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  • Value

KK2.1HC flight control board

Nov 13, 2019

Netjes geassembleerd en werkt goed.
alleen update van de firmware ging niet helemaal goed.
de flight controller weer goed gekregen en vliegt goed.

Mauro | Verified Buyer

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  • Value
  • Quality


Nov 11, 2019

Come per il programmatore mancano istruzioni di funzionamento

Mauro | Verified Buyer

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  • Overall
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Nov 10, 2019

Ho visto questa scheda in diversi tutorial e come usarla anche per gli aerei

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Customer files
kk2-1_1-9S1 Download [128]
KK2.1.X Instruction Manual V1.18S1 Pro.pdf Download [1]
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