The KK2.1.5 Multi-rotor LCD Flight Control Board is one of the most iconic and user-friendly flight controllers ever designed for the RC community. At Electrapac, we recommend this board for beginners and hobbyists because it is the only flight controller that allows you to tune your drone completely without a computer.

Product Overview

The KK2.1.5 is a dedicated flight control board for multi-rotor aircraft (Tricopters, Quadcopters, Hexacopters, etc.). Its defining feature is the integrated LCD screen and four navigation buttons, which allow you to adjust "P" and "I" gains, change motor layouts, and calibrate sensors directly at the flying field. Powered by the Atmel 644PA processor and the highly sensitive 6050MPU (gyroscope/accelerometer), it provides stable and predictable flight characteristics.

Key Features for Electrapac Customers

• Standalone Tuning: No laptop, no Bluetooth, and no apps required. All flight parameters are accessible via the onboard menu.

• Versatile Airframe Support: Supports a vast range of configurations including Dualcopter, Tricopter, Quadcopter (X and +), Hexacopter, H6, Octocopter, and even V-Tail.

• Auto-Level Mode: Features a highly reliable "Self-Level" mode, which makes it incredibly easy for first-time pilots to learn without crashing.

• Voltage Monitoring: Includes a dedicated pin for battery voltage sensing; the board will beep to alert you when your LiPo battery is running low.

• Polarity Protection: The 2.1.5 version includes added protection to help prevent damage from accidentally connecting the power wires incorrectly.

Wiring & Setup Guide

To get your Electrapac drone in the air, follow this essential connection sequence:

1. Receiver Connection: Connect your Radio Receiver (RX) to the pins on the left side (Aileron, Elevator, Throttle, Rudder, and Aux).

2. ESC Connection: Connect your Electronic Speed Controllers to the pins on the right side (M1 through M8).

   Note: M1 provides power to the board. M2 through M8 only share signal and ground.

3. Sensor Calibration: Access the menu to perform "ACC Calibration" while the drone is on a perfectly level surface.

4. Layout Selection: Choose your frame type (Quadcopter "X") in the menu to ensure the motors spin in the correct directions.

Primary Applications

• DIY Quadcopters: The perfect "brain" for 450mm and 500mm class multi-rotors.

• Educational Training: Ideal for STEM students to learn about PID (Proportional-Integral-Derivative) control loops visually.

• Field Testing: Used by pro-builders as a "test board" because it is so fast to set up on a new airframe.

• V-Tail and Experimental Crafts: Its flexible firmware makes it easy to experiment with non-standard motor configurations.

Why Shop at Electrapac?

We ensure our KK2.1.5 Boards come with the latest stable firmware and high-contrast LCDs for easy outdoor reading. Visit us at www.electrapac.com for the flight electronics that make drone building accessible to everyone.