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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


Now save save $7.97 $7.97

Special Price $10.59 $10.59

You save save $7.97 $7.97

Was  $18.56

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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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Pet | Verified Buyer

  • Overall
  • Quality
  • Value

Very satisfied

Jan 29, 2023

Very convenient for my prototypes!

sergedesessarts | Verified Buyer

  • Overall
  • Quality
  • Value


Jan 16, 2023

Bon matériel à un prix très intéressant mais le firmware doit être remplacé pour un plus efficace.

Quinn | Verified Buyer

  • Overall
  • Quality
  • Value

Works as expected.

Mar 18, 2022

Niece thing about it, it requires no soldering. the bad, it has no optional extras.

gp | Verified Buyer

  • Overall
  • Quality
  • Value

bon programmateur

Feb 19, 2022

bon programmateur drone, facile car peut etre programmé sans pc, il faut acheter le KK2.1 HC programmer

gstar | Verified Buyer

  • Overall
  • Quality
  • Value


Oct 27, 2021

Great bit of kit

CHRISTIAN. | Verified Buyer

  • Overall
  • Quality
  • Value

Old but goody

Oct 26, 2021

Again getting on a bit but easy to use so 5*****

Jo | Verified Buyer

  • Overall
  • Quality
  • Value


Aug 25, 2021

Je connaissais les premières cartes kk, celle ci a évolué, plus facile à brancher et plus sympa à programmer grâce à un module indépendant, c'est une excellente idée du concepteur.

Yngve66 | Verified Buyer

  • Overall
  • Quality
  • Value


Jul 02, 2021

A couple of my KK 2,1,5 have been problematic to program. So i want to try this KK2,1HC and hope it works out better than the old one.

Bertje S | Verified Buyer

  • Overall
  • Quality
  • Value

Zeer goed

Apr 24, 2021

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

Bertje S | Verified Buyer

  • Overall
  • Quality
  • Value

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

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Customer files
kk2-1_1-9S1 Download [128]
KK2.1.X Instruction Manual V1.18S1 Pro.pdf Download [1]
KK_Programmer_Replacement.pdf Download [3]
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