ALLIED DRONES AR25 User Manual

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Table of Contents

Overview

Firmware

Flight Controller

Radio Control

Failsafe

Motors, Props, ESCs

Side Plates

Battery

FPV System

Accessories

Specifications

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overview

…the next evolution of high performance racing drones

Impact resistant composite frame core! 4mm carbon fiber booms! Fully integrated power and signal PCBs! 24k gold plated connectors and bus bar! Seriously Dodo rev. 3a F3 flight controller! Runcam Swift FPV 600TL CCD camera! 200mW RaceBand video transmitter w/ display

Integrated MinimOSD Micro! Race-spec 2205 2300kv hollow shaft motors! Flycolor 30A SiLabs F330 ESCs! Internal battery bay! 14 programable RGB LEDs! 12 high intensity solid red rear LEDs! Integrated Frsky XSR micro receiver connector

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Firmware

External Resources

While drone racing is fast and exciting, this new sport is not without its challenges. The only thing

Cleanflight Firmware & Configurator Software! http://cleanflight.com/

Betaflight Flight Control Firmware (installed in the AR25)! https://github.com/betaflight/betaflight

Betaflight Configurator! https://github.com/betaflight/betaflight-configurator

MW OSD Firmware & Configuration Software!

faster than a racing drone are the advancements and improvements to the software and firmware!

That being said, the AR25 comes fully configured and tuned out of the box and should fly just fine for most users. But for those looking to try to get the most out of their hardware, these following resources

http://www.mwosd.com/

BL Heli ESC Firmware & Configuration Software! https://blhelisuite.wordpress.com/

SiLabs Drivers for Flight Controller & ESCs! http://www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspx

are worth exploring and studying in depth.

So to stay on top of the latest developments, keep an eye on these sites listed here as well as allieddrones.com for tutorials, support, and more.

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flight Controller

Seriously Dodo Rev 3a

8 input channels !

We have fully integrated the best flight controller currently on the market, the Seriously Dodo rev. 3a. This is a new F3 generation of flight controllers

8 output channels! 3 UARTs (GPS, Telemetry, S.bus)! 2-6s input power 30v MAX INPUT! 5v output - 0.5A Max! STM32 F303 256k ! 2 megabyte blackbox storage! Barometer! Spektrum satellite port!

enables fast loop times and multiple UART ports. The Dodo board interfaces with an AR25 flight controller adapter board on the right side plate. This adapter board allows for several additional configurable solder pads to enable additional advanced flight controller/RC features such as FC OSD, Spektrum Rx, Frsky S.port, S.bus, and more.!

MPU6050 accelerometer/gyro!

5.4g! MicroUSB socket! WS2811-style LEDs pinout! Preconfigured with Betaflight firmware

The flight controller is pre-configured with Betaflight and S.bus for the optional Frsky XSR receiver, as well as the full set of 14 RGB LEDs.

The FC adapter board allows for future additional flight controller integration.

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RADIO CONTROL

RC Transmitter & Mode Controls

The AR25 has been setup to work nativley with the FrSky Taranis X9D Plus and XSR s.bus receiver. If you purchased an ARF package from Allied Drones, then your receiver has been setup as indicated:

SF - Disarm / Arm! SH - Off / Momentary Buzzer! SG - Mode (Angle - Horizon - Rate)! SD - Airmode Off / AirMode On! Failsafe - no pulse! Mode 2 stick configuration

“Home” position for all switches are forward/away from the perspective of the pilot. Therefore, home position would be; motors disarmed, buzzer off, angle mode, airmode off.

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FAILSAFE

Failsafe Mode

In the event of a loss of radio control signal, both the radio transmitter (if included) and the flight controller have been set with basic failsafe mode functionality.

In the event of a lost link between the transmitter and the RC receiver onboard the RC system is configured to send “no pulses”. In turn, the flight controller is configured for both Stage 1 and Stage 2 failsafes if it receives no pulses from the RC receiver.

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Motors / Props

M4 (CW)

M2 (CCW)

The motor and propeller direction and numbering is critical for the flight of the AR25. Each set of ESC/

M3 (CCW)

Motor solder tabs are labeled on the side plates. Because each ESC is fully configurable through the flight controller via USB, we recommend not worrying about the order in which the ESC output and motor leads are wired into the plates because

M1 (CW)

we can change it in firmware faster than soldering.

NOTE: However, DO pay attention to ESC input wire +/- wiring!

When replacing motors, props, and ESCs, please make note of the proper direction and motor number position.

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ESC / Motors

Motor direction can be changed either by exchanging the position of any 2 motor or ESC leads, or can be done in firmware via a simple software configuration. After replacing motors or ESCs, remove the props, power on, and arm the motors. Note the direction they spin and make adjustments to the wiring or firmware to reverse direction.

ESC Power (check polarity!)

ESC Motor Leads

Motor Leads

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ESC

The ESCs supplied with the AR25 are Flycolor Raptor 30a model number W-FW020004.

Specifications:! Constant Current Rating: 30A! Burst Current Rating (10s): 40A! BEC: No! Cells: 2-4S! Weight: 9.6g! Processor: SiLabs F330! Firmware: BLHeli 14.4

BLheli Options Set:! Dampened Light: On! Oneshot125: On

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side plates

The AR25 side plates feature integrated RGB and rear facing red LED lights, power and signal distribution, integrated 5v regulated power supply, an audible buzzer, XT60 power connector, an auxiliary 5v power pinout, gold plated contacts, solder-less/tool-less internal component connectors, OSD mounting and external FTDI programming pinouts, easily accessible motor/ESC solder pads, and internal LC video filter.

The concept behind the design of the PCB design was to reduce the tangled mess of wires commonly found in FPV racers and offer a cleaner, more reliable, and better performing setup.

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side plates

Right Plate (flight controller side)

Motor 1 ESC Signal Pins! Motor 2 ESC Signal Pins! 5v Auxiliary Power Pins from BEC! Filtered Auxiliary BEC (internal)! Buzzer (internal)! XT60 Main Battery Connector! Gold Plated Bus Bar Screws! Flight Controller Screws, black plastic! OSD Advanced Solder Tabs and FTDI! Video Transmitter Access Ports! Video Camera Tilt Screws

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side plates

Left Plate

Motor 3 ESC Signal Pins! Motor 4 ESC Signal Pins! Gold Plated Bus Bar Screws! Video Camera Tilt Screws

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side plates

LEDs

There are 7 programmable WS2812 RGB LEDs on each of the AR25 side plates. These LEDs are able to

(0)

(1)

(2)

(4)

(3)

be programmed and controlled via the flight controller and Betaflight firmware.

In addition to the 14 programmable LEDs, there are also 12 non-programmable red LEDs facing the rear of the AR25.

(6)

(5)

The address for each WS2812 programmable LED is shown in the following diagrams.

Non-programmable solid red LEDs

Programmable WS2012 LEDs

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side plates

LEDs

The address for each WS2812 programmable LED is shown in the following diagrams.

(10)

(11)

(9)

(12)

(8)

(7)

Non-programmable solid red LEDs

Programmable WS2012 LEDs

(13)

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side plates

Bus Bar

The two side plates of the AR25 have a pair of 24k gold plated aluminum power bus bars connecting them that supply power from the battery, through the right side plate and then into the left side plate.

When the battery is connected no not short metal tools across the gold plated bus bar screws. Disconnect power first!

**check screw torque regularly**

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Auxiliary pins

An auxiliary 3-pin servo header has been provided on the left side plate with a 5v center hot pin. This

Ground

+5v 3A

Signal (unused)

auxiliary pin receives regulated 5v power from the integrated AR25 3A power supply and is intended to allow for the easy addition of an optional LED race transponder.

Compatible transponders are available from vendors such as Trackmate and iLap, for instance. But please check with your local racing venue to see which system they use.

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battery

Specifications

Internal Battery Bay Dimensions: 111mm x 30mm x 35mm! Standard AR25 battery: 4S 1P, 14.8v, 1800mAh, 60C, XT60, 210g! Standard battery dimensions: 105mm x 27mm x 35mm! Standard battery lead length: 150mm! Charge Rate: 1-2C (max 5C)

The AR25 battery has been specifically designed for the internal battery bay and features extended battery discharge leads and a genuine XT60 connector to reach the power input on the left side plate.

To insert the battery the battery leads must face to the rear and bottom of the frame. First pass the XT60 connector through the slot to exit the rear of the composite frame, then tuck the balance connector into the slot. Tilt the rear of the battery into the bay and then rotate the front of the battery into position.

Secure the battery by lightly separating the plates while inserting and rotating the battery plate tabs into the slots in the plates until it “snaps” into place.

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fpv system

Video Camera Specifications

Model!

The video camera installed in the AR25 is the best

RunCam Swift! Image Sensor! Horizontal Resolution! Lens! Signal System! OSD Set! S/N Ratio! Electronic Shutter Speed! Auto Gain Control (AGC)! Back Light Compensation! Minimum Illumination! WDR!

1/3 Sony Super HAD II CCD!

600TVL!

2.8mm 90 fov!

PAL / NTSC!

Yes!

>60db (AGC off)!

NTSC: 1/60 ~100,000!

Yes!

0.01 Lux/1.2F!

D-WDR!

available on the market. Battery voltage (4S,

12.8-16.8VDC) is supplied directly to the camera via the side plate and 3-pin Molex connector. The video signal passes through the MinimOSD and an integrated LC Filter before reaching the Video Transmitter.

DNR! Day / Night! Power! Net Weight! Dimensions

2DNR!

Auto/Color/B&W!

DC 5 to 17V!

12g!

26mm x 26mm x 28mm

2mm screws allow for easy camera angle adjustments between 24° to 70°.

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fpv system

Video Transmitter Specifications

The video transmitter channel display and change button is accessible through two ports on the left

200mW!

CH1!

5865!

CH1!

5733!

CH1!

5705!

side plate. A short press will change channels while a long press will change bands.

Button (short press - channel change, long press - band change)

Alternating Channel / Band Display

CH1!

5740!

CH1!

5658!

5.8GHz! 40 Channels! Race Band! SMA Connector