The KK2.1.5 Flight Control Board is a user-friendly and cost-effective flight controller designed for hobbyists building multi-rotor drones. Featuring an Atmel ATmega644PA processor, a built-in 2.1" LCD display, and advanced gyroscope and accelerometer sensors, it provides excellent stability and on-the-field configurability. It supports a wide range of multirotor configurations including quadcopters, tricopters, hexacopters, and octocopters.

Key Features:

• ATmega644PA 8-bit AVR Microcontroller
• Integrated 2.1" LCD Display – For easy setup and tuning without a computer
• Multi-rotor Support – Supports Quad, Tri, Hex, Octo & more
• Auto-Leveling & Self-Stabilizing Modes
• Precise Sensor Suite – With MEMS gyroscope and accelerometer

Specifications:

• Microcontroller: Atmel ATmega644PA 8-bit AVR @ 20MHz
• Display: 2.1" Monochrome LCD (8x2 lines)
• Sensors: 6050 MPU – 3-axis Gyro + 3-axis Accelerometer (InvenSense)
• Input Voltage: 4.8V – 6.0V (typically powered by ESC BEC or external UBEC)
• Motor Outputs: 8x PWM Outputs (for ESCs)
• Receiver Input: 6x PWM Channels (from RC receiver)
• Memory: 64KB Flash, 4KB SRAM, 2KB EEPROM
• Signal Interface: PWM for both input and output
• Firmware Upgrade: ISP Header available (for firmware flashing)
• Dimensions: 50mm x 50mm (standard mounting)
• Mounting Holes: 45mm x 45mm (M3 holes)

Supported Multi-Rotor Configurations:

• Quadcopters
• Tricopters
• Hexacopters
• Octocopters
• Dual Copters & Y6/V-Tail Setups

Applications:

• Custom Multirotor Drone Builds
• RC Flight Testing & Tuning
• Autonomous Navigation Projects (with external modules)
• Educational UAV Platforms