PowerBox PowerCube ONE Instruction Manual

Introduction

Dear PowerBox customer, with the PowerCube ONE, PowerBox offers an all-in-one power supply system for the CubePilot Cube flight controller, all the associated sensors, radio system, and 24 high-power servos.

The two XT60 sockets are designed for the connection of rechargeable batteries or DC generator outputs. DC/DC converters of redundant construction provide 5V power to the CUBE and its peripherals, while an additional DC/DC circuit supplies a regulated 8V supply to the RC receiving system, the optional iGyro, GPS or True Airspeed Vario, and four servo sockets. The input voltage of 6V - 35V is available with minimal losses at all the other servo sockets. The entire power supply system is of redundant construction throughout.

However, the PowerCube ONE offers a great deal more: all the telemetry data gathered by the PowerCube ONE, such as battery information, GPS or True Airspeed data (if an optional GPS III or PBS-TAV is connected), are passed via the CAN bus to the CUBE, where the information can be used for flight control, or alternatively simply sent to the ground via the MAV-LINK interface and RC telemetry.

The RC receiver connected to the system (P²-BUS/EX-BUS/S.BUS2/SRXL2) can be used by the radio control system to activate a by-pass, which circumvents the CubePilot control system. In by-pass mode, it is possible with a fixed-wing aircraft to revert to proven iGyro technology, which is easy to set up. This enormously reduces the load on the pilot during manual take-off and landing during the set-up and parameter adjustment phases of the CubePilot flight controller.

All the servo outputs are freely assignable. If your aircraft features multiple servos actuating individual control surfaces, the PowerCube ONE offers a unique automatic servo-match function, which allows these servos to be synchronised in just a few seconds.

Two door sequencers, operating independently of each other, can be used to control a retractable undercarriage and wheel doors, or other control sequences, using only one channel. Each sequencer can control up to six servos with individual timing.

The unit features a full-colour 2.4" monitor which is legible in sunlight. Intuitively designed menus and assistants for initial installation, servo matching, or the door sequencer make it a simple task to prepare the system for operation.

Features

• All-in-one power supply system for the CubePilot Cube flight controller
• High-performance dual power supply with high continuous current delivery
• Low-loss 6-35V power supply for servos connected to the system
• 40A brief maximum current load (10s)
• 20A continuous load
• 8A continuous load for the regulated 8V outputs
• High-performance 5V/3A power supply for the CubePilot and peripherals
• Consistent dual construction of the high-power electronics
• Redundant electronic switch
• 26 channels (S.BUS: limited to 16)
• 22 freely assignable servo outputs
• CAN-BUS connection to the CubePilot system
• Availability of all telemetry data for the CubePilot
• Telemetry data for the RC system (P²-BUS/S.BUS2/SRXLS2/EX-BUS/HoTT/M-Link)
• By-pass function for the controller
• Servo-matching for all 22 outputs
• Auto-matching function
• 2 independent door sequencers with set-up assistant
• Latest type of integral iGyro technology, with iGyroSat as gyro sensor
• 12 independent gyro outputs for: 4x aileron, 4x elevator, 4x rudder
• All 12 gyro outputs with individual gain control
• Graphic menu representation for ultra-simple programming
• Sophisticated assistant for fast initial set-up
• Optional use with GPS III or PBS-TAV for speed-dependent gyro compensation (by-pass mode only)
• Virtually every aspect can be operated from PowerBox and Jeti transmitters
• User-selectable servo frame rate: 10ms, 12ms, 14ms, 16ms, 18ms
• Suppression of servo feedback currents
• 2.4" TFT screen, legible in sunlight
• Bi-lingual menu system
• Latest 32-bit micro-processor for precise high-speed signal processing
• Optimised heat dissipation via high-performance machined metal heat-sink
• Machined, anodised aluminium switch and screen case
• Compact dimensions (137mm x 84mm x 31mm)
• Weight only 170g (without Cube)

Connections

The PowerCube ONE features two main power input connectors (Powerinput 1 and Powerinput 2) and various other ports for system integration.

Powerinput 1 & 2:

These are the primary power inputs, typically for connecting rechargeable batteries or DC generator outputs.

Other Ports:

• USB-C for the Cube: For connecting to the CubePilot flight computer.
• Cube CAN-Bus / I²C / UART connections: For communication with the CubePilot and other peripherals.
• Safety switch connector: For connecting the power switch.
• 4x 8V regulated servo outputs: Dedicated outputs for servos requiring a regulated 8V supply.
• 18x unregulated servo outputs: Outputs for servos that can accept the input voltage (6V-35V).
• Display connector: For connecting the TFT screen.
• Update, data save and restore connector: For firmware updates and data management.
• iGyro / GPS connection for the bypass: For connecting optional iGyro or GPS units and enabling bypass functionality.
• P²-BUS / S.BUS / EX-BUS connection for the bypass: Serial bus connections for receiver bypass.
• S.BUS RX connection for the Cube: Specific connection for S.BUS receivers to interface with the Cube.

Installation and Setup

Initial Installation Sequence

It is important to follow a standard sequence for swift and problem-free installation:

• Connect the CubePilot Cube to the PowerCube ONE and fix it with 4 screws.
• Install the PowerCube ONE in your aircraft, including the switch and screen.
• Connect the batteries and turn on the system.
• Setup the Cube in Mission Planner following the add-on instructions.
• Connect a receiver to RX1 with P²-BUS, S.BUS, SRXL, or EX-BUS.
• Make the battery settings in the General settings menu.
• Set up all functions in the transmitter.
• Carry out the Setup Assistant.
• Carry out the Door Sequencer Assistant (if applicable).
• Assign remaining functions in Output Mapping.
• Set up control surface travels, flight modes, Dual-Rate, Expo etc. at the transmitter.
• Use the Servo Matching feature to equalize servos operating in parallel.
• Teach stick end-points in the iGyro menu (if applicable).
• Dial up the gyro gain in flight (if applicable).
• Fine-tune the iGyro (if applicable).

Mounting

Mount the PowerCube ONE on a robust sub-structure using the provided screws, rubber grommets, and brass eyelets. The location is flexible, but if using an iGyroSat, the sensor must be perpendicular to the aircraft's centreline. The TFT screen should be in a clearly visible location, as its bright lighting is legible even in direct sunlight. Connect the screen to the 'Display' socket. Mount the switch on the fuselage side. A wooden doubler may be needed for GRP fuselages to prevent vibration. The set includes a template for the switch aperture. An alternative MagSensor switch is available. Note that the SensorSwitch is required for programming unless using a Core or Jeti RC system.

Receivers

Once the PowerCube ONE, screen, and switch are installed, connect the receivers. Serial bus connections can be extended to any length due to their digital nature and resistance to interference.

The PowerCube ONE supports a wide range of radio control systems at RX1, including:

• PowerBox CORE P²BUS
• Futaba S.BUS 2
• Jeti EX-BUS
• Spektrum SRXL2

The unit automatically detects the connected system. This detection may take a few seconds on initial power-up. Once detected, the system type is stored for subsequent starts.

RX1 connects directly to the main controller, bypassing the Cube. It controls channel 16 if the signal comes from RX1 or the Cube. If RX1 is not connected, the Cube's signal is always present at the servo outputs.

The 'RX Cube' port is for using S.BUS to control the CubePilot Flightcomputer. Other options like CAN bus or Mavlink connect to the JST connectors on the other side.

Radio System and Settings

• PowerBox CORE: Connect the receiver to RX1 with the P²BUS output.
• Jeti EX-BUS: Set one receiver output to EX-BUS. Frame rate should be 10ms, and Failsafe function must be OFF.
• Futaba S.BUS2: Connect the receiver to RX1 with the S.BUS2 output. For telemetry data, perform a 'Load New' process in the Telemetry Sensor menu to clear the sensor list, then select Slot 16 and 'PowerBox'.
• Spektrum SRXL 2: Connect a SPM4651T satellite using the optional adapter lead set (#9192). Battery data will appear under 'PowerBox Sensor' at the transmitter. The PowerCube ONE works in DX18 compatibility mode by default.

Note: Do not attempt to register the PowerBox as a sensor at the transmitter; this function is not implemented.

Connecting the Batteries

High voltages (up to 35V) are present when connecting batteries. A characteristic sound indicates capacitor charging, which is normal. LiPo or LiIon battery packs up to 8S can be used; the minimum is a 2S pack. Select battery capacity ensuring one pack can supply the aircraft's power needs. Smaller capacities are permissible with higher voltages. Maintain correct polarity when assembling batteries; the unit lacks reverse polarity protection.

Note: Connecting reversed-polarity batteries, even briefly, will destroy the PowerCube ONE.

Switching On and Off

To switch on: hold the SET button until the LED glows red. Continue holding it while briefly pressing buttons I and II to confirm. This allows individual battery switching for checks. The same procedure is used to switch off.

TFT Screen Display

The TFT screen displays key information:

• Analogue battery voltage display: Shows momentary (red line) and minimum recorded voltage (grey line) during flight. The scale adjusts to battery type. Digital display shows exact values.
• Current draw: Two analogue markers show current from left and right batteries. A digital figure shows the sum of currents.
• 8V Output Voltage: Displays the voltage at the 8V output.
• Consumed Capacity: Shown separately for each battery, resettable via a transmitter channel.
• Status Messages: Displays receiver status and lost frames.

Menu Navigation and Settings

Main Menu

Access the menu by holding the SET button for 2-3 seconds. Use buttons I and II to select menus, with the current selection highlighted in red. Press SET to enter a menu and alter values.

The "Rotary Menu" includes:

• iGyro: Settings for the iGyro, available when an iGyroSat is connected to the FastTrack input.
• Matching: Adjusts servos for synchronized movement using a five-point curve, includes Auto Matching.
• Sequencer: Setup for two independent door sequencers, manually or via Assistant.
• Output: Assigns all 22 outputs to transmitter channels, Gyro outputs, or sequencers.
• Input: Assigns transmitter channels to iGyro or sequencer functions.
• General: Alters fundamental settings like language and frame rate.
• Assistant: Guides through basic channel and servo assignments for new aircraft, simplifying setup.

General Settings

Before using primary functions or connecting servos, configure basic settings in the General Settings menu.

• Radio control system: Automatically detected. Shows the detected system if receivers are connected and bound.
• Framerate: Default 16ms for reliable servo operation. 12ms offers better performance for digital servos. Lower rates may overheat analogue servos.
• Capacity reset channel: Assign a channel to reset consumed battery capacity by moving it to +100%.
• Language: Select German or English.
• Battery type: Select the number of battery cells.
• Reset options: Access a sub-menu to reset various settings.

Setup Assistant

The Setup Assistant simplifies basic channel and servo assignments. It is recommended even for experienced users or if an iGyroSat is not immediately used. It initially uses general output terms (e.g., DIRECT-xy) and later specific designations (e.g., Right aileron). It allows retro-fitting an iGyroSat without re-programming.

Note: For first-time setup, follow the sequence: Setup Assistant → Sequencer Assistant → manual output assignment.

Use a pre-programmed RC radio. Connect a receiver to RX1. Ensure primary functions and mixers (delta, tailerons, thrust vector) are set up at the transmitter before starting. If using an iGyroSat, install it and connect it to the FastTrack socket. A GPS III for telemetry can also connect via a Y-lead to FastTrack.

The Assistant guides through selecting wing type (Normal/Delta), tail type (Normal, Tailerons, V-tail), and thrust vector system (Single/Dual). It then prompts for the number of servos per control surface and detects transmitter channels for each function (e.g., ailerons, elevator, rudder). It also helps assign a gain channel for the iGyro.

The iGyroSat orientation teaching involves moving the aircraft (or the sensor itself) to establish correct sense and end-points for elevators, rudder, and stick controls.

Servo Matching

Servo Matching adjusts servo travel and direction using five points, essential for synchronizing multiple servos on one control surface or function. It can be done manually or automatically.

• Initialising: Center transmitter sticks, select 'Initialise', then move sticks to both end-points to calibrate travel.
• Reversing the output: Reverse servo output without adjusting individual points.
• Manual Matching: Adjust servo travel point-by-point using a five-point curve.
• Auto Matching: A new development that matches up to three interconnected servos accurately over five points by measuring current draw. It works in stages (coarse, fine, fine-tuning) and requires servos to withstand brief strain. Servos that remain fixed when signal is off (non-soft) must be matched manually.

Note: This action causes all servos assigned to an input channel to move to the selected position. Ensure mechanically linked servos are properly synchronized to avoid stalling.

Door Sequencers

The PowerCube ONE includes two programmable door sequencers for controlling functions like undercarriage, wheel doors, or canopy latches. The Sequencer Assistant is specifically for undercarriage sequences.

The Sequencer menu allows selection, manual setup via graphics, or using the Setup Assistant. The Assistant can rename functions (e.g., 'Door FL' for front left door) for easier adjustments.

Key sequencer settings include:

• Sequencer: Select Sequencer A or B.
• Function: Adjust specific functions (up to six per sequencer), defining up to seven travel points with servo position and delay.
• Switched channel: Assign a transmitter channel to control the sequencer. Travel should be -100% to +100%. A three-position switch at 0% can pause the sequence.
• Switch position: Displays current channel position, correctable via transmitter servo reverse.
• Manual Setup: Fine-tune timing and position of functions set by the Assistant.
• Setup Assistant: Prepares functions for undercarriage and retract control, learning positions and timing.

The Setup Assistant for undercarriage sequences involves selecting a mode (1, 2, or 3), defining the number of doors, and setting pauses between undercarriage and door movements. After configuration, the Assistant tests and sets positions, allowing adjustments. The system can be re-run to adjust timing without re-setting positions.

Note: When adjusting wheel doors, retract and disable the undercarriage first to prevent mechanical damage.

Output Mapping

Output Mapping assigns servo sockets to transmitter channels, gyro, and sequencer functions. All 22 outputs are assignable, allowing one function to control multiple outputs (e.g., two elevator servos from one channel). It's also used for setting Failsafe response for each channel.

Function types include:

• Direct: Assigns a transmitter or flight computer channel directly.
• Gyro outputs: Assigns gyro channels (e.g., Aileron, Elevator, Rudder) after Setup Assistant completion.
• Sequencer A and Sequencer B: Outputs for door sequencer functions, with general designations or specific names after Assistant use.

The FS/HD setting configures Failsafe response, defaulting to 'Hold'. Failsafe on throttle is essential for safety and legal compliance.

Input Mapping

Input Mapping assigns channels from the transmitter to functions like Gyro, Sequencer, or capacity reset. It's typically done by the Setup Assistant but can be adjusted later. Assigning different Gain channels for the iGyro simplifies complex applications.

iGyro

iGyro features are detailed in the iGyroSat manual. The iGyro relieves pilot workload during test flights without a flight computer. It's not recommended to use iGyro and the flight computer simultaneously due to potential interference. It's crucial to complete the Setup Assistant before changing iGyro settings for correct channel assignments.

Gyro Settings – Before the First Flight

Before fine-tuning the iGyro in flight, ensure:

• General Settings are configured.
• Setup Assistant is completed and orientation learned.
• Door sequencer is set up (if applicable).
• All other functions (throttle, flaps) are assigned.
• Functions are correctly set up (servo centre, end-points, matching, Dual Rates, Expo).

Enter the iGyro menu to 'Learn transmitter stick end-points' for calibration. After setup, turn gyro gain to maximum and check the direction of effect. The iGyro learning process minimizes corrections. If errors occur, repeat the relevant step. Gain control has two ranges (A and B); Range B assigns 'Attitude Assist' to ailerons for precise response. During test flights, set gain to 0% and trim the aircraft without the gyro. Adjustments can be made later by re-learning stick end-points or using the gain control.

Specifications

Set Contents

• PowerBox PowerCube ONE
• TFT-Display
• SensorSwitch
• 2 patch-leads
• 8 retaining screws
• 4 M2x20 screws
• 4 rubber grommets and brass sleeves
• Operating instructions

Safety, Guarantee, and Liability

EU Declaration of Conformity

This device complies with essential requirements and provisions of Directives 2011/65/EU + 2015/863/EU (RoHS) and 2014/30/EU (EMC). The EU Declaration of Conformity can be found at: www.powerbox-systems.com/en/content/certificates

Dimensions

The unit has compact dimensions of 137mm x 84mm x 31mm.

[Diagram showing dimensions of the PowerCube ONE unit and the Sensor Switch.]

Service Note

For technical questions, contact: industrialsupport@powerbox-systems.com

Service Address:
PowerBox-Systems GmbH
Dr.-Friedrich-Drechsler-Str. 35
86609 Donauwörth
Germany

Guarantee Conditions

PowerBox-Systems guarantees products are "Made in Germany". A 24-month guarantee is provided from the date of purchase, covering material faults. Repairs by the Service department do not extend the original guarantee period. The guarantee does not cover damage from incorrect usage (e.g., reverse polarity, excessive vibration, voltage, damp, fuel, short-circuits) or severe wear.

No liability is accepted for transit damage or loss of shipment. For guarantee claims, send the device to the service address with proof of purchase and defect description.

Safety Information

Intended Use:

The PowerBox PowerCube ONE is exclusively for remote-controlled modelling applications, particularly model aircraft. It is not intended for manned aviation, safety-critical, or medical applications and must only be used by qualified persons.

General Safety Instructions:

• Read complete operating instructions before commissioning.
• Installation and connection must only be done when the system is switched off.
• Ensure safe power supply and correct polarity. Incorrect polarity will permanently damage the voltage regulator.
• Each battery must reliably supply the model; redundancy through two independent sources is recommended.
• Keep components dry and dust-free.

Commissioning and Operation:

• Perform a complete range test before the first flight.
• Check all channels and telemetry data before each use.
• Use only approved batteries and observe permissible voltage ranges.
• Install the unit stress-free, vibration-damped with rubber pads and brass bushings.
• Use of two receivers is recommended for reliability, positioned far apart.
• Activate both batteries separately before each flight and check voltage.
• Operate only in dry environments; avoid water, moisture, or fuel.
• Check all connections, cables, and telemetry data before each flight.
• Never open the device, as this invalidates the warranty.

Approval Information:

Complies with directives 2011/65/EU + 2015/863/EU (RoHS) and 2014/30/EU (EMC). Observe country-specific approvals for operation elsewhere.

Disposal:

Do not dispose of with household waste. Hand over to an appropriate collection centre for proper disposal (WEEE Directive).

Liability Exclusion

PowerBox Systems cannot ensure users observe instructions, fulfil recommended conditions, or competently maintain the radio control system. Therefore, liability for loss, damage, or costs arising from use or operation of the PowerBox PowerCube ONE is denied. Obligation for damages is limited to the invoice total of involved products, where legally permissible.

We wish you success with your new PowerBox PowerCube ONE!

[Signature and location/date: Donauwörth, July 2025]

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References

• PowerBox-Systems GmbH
• Certificates - PowerBox-Systems GmbH

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