Hobbypower KK2.1 LCD Flight Control Board 1.9S Firmware for Multirotor Flying Wing V-tail;

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TOOGOO(R) KK 2.1 LCD Flight Control Board 1.9S Firmware for Multirotor Flying Wing V-tail Green
The Atmega644PA IC unit then processes these signals according the users selected firmware 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 stabilizes your multi-rotor craft.
The KK2 Multi-Rotor control board also uses signals from your radio systems receiver (Rx) and passes these signals to the Atmega 644PA IC via the aileron, elevator, throttle and rudder 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).
At the heart of the KK2 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.
Size: 50.5mm x 50.5mm x 12mm
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: 1.9S.
Package List:
KK2 Multi-Rotor controller
Note:Light shooting and differnent displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is ¡€1-3 cm.