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The AR7700’s seamless, one-wire connection and multiple output options make it easy to use a Spektrum radio system with the most popular multi-rotor flight controllers. A remote receiver is included.
The AR7700 is compatible with many of the most popular flight controllers and gives users three connection options to choose from:
Serial (SRXL), PPM and Remote Receiver. Just plug a single connector into the receiver port that supports the option you want to
use and connect it to your flight controller.
The AR7700 includes extra ports that let you run functions like retractable landing gear, lights or gimbal control directly from
The AR7700 will work with these and many other multi-rotor flight controllers.
A small remote receiver is included for larger multi-rotor applications that could use the redundancy and path
diversity of patented MultiLink™ technology. By mounting the remote receiver away from the main receiver with a different antenna
orientation, the odds of experiencing signal fade from signal reflection or antenna polarization are substantially reduced.
When using the SRXL and Remote Receiver connections, the AR7700 will allow you to tap into as many channels as
your transmitter can support. The PPM connection can support up to 8 channels.
Connect to the GND, 5V and RX line from the main or flex port on the CC3D to the Remote Rx port on the AR7700 to run DSM.
Connect the 3 pin servo connector on the 8 pin JST-SH cable to the IO2 port on the SP Racing F3 to the Remote Rx port on the AR7700 to run DSM.
Connect the PPM cable from the Vortex to the PPM port on the AR7700.
Connect to the GND, 5v, and pin 4 from the Naze to the Remote Rx port on the AR7700 to use DSM .
Dedicated Multi-rotor Airware available for all Spektrum generation 2 transmitters including the DX6, DX7, DX9, DX18G2 and DX18
Stealth. This software upgrade was designed specifically for the multirotor enthusiast and offers tailored programming and setup
options for multirotor platforms. Log onto the Spektrum community site to check for the latest AirWare updates for your
transmitter.(Available late October 2015)
Yes; but only through the Gear, Aux1, and Aux2 ports (channels 5, 6, and 7). These are the only output ports on the AR7700 that can drive conventional (PWM) servos. The AR7700 cannot control conventional (PWM) servos for primary flight controls (channels 1 through 4).
Signal Path Diversity: Using only a single remote receiver does not offer RF signal diversity, so resistance to interference is reduced. The AR7700 can be used with its single internal receiver for short range (parkflyer) applications such as racing, or for full range performance with the most robust RF link the remote receiver can be added. Always re-bind after removing or adding the remote receiver.
Binding Ease: The AR7700 binds with a bind plug like other Spektrum receivers. A remote receiver requires an external method to bind. Some flight controllers enable this through the user interface; others require you to use a secondary receiver to bind the remote receiver.
Failsafe Setup: As with existing Spektrum receivers the AR7700 allows the setup of preset failsafe by pulling the bind plug after the receiver is in bind mode and before binding to the transmitter. Preset failsafe will output the settings you designate at binding if RF signal is lost so you don�t have to configure your flight controller for failsafe operation which varies among current controller offerings.
Wider Voltage Range: Remote receivers are designed to run at 3.3 volts. In order to run the remote most flight controllers use a 3.3 volt regulator on the board that may or may not have sufficient capabilities to support the remote receiver. The AR7700 operates in the same voltage range as any common receiver (4.5v-9.6v) so it can be powered with the same 5 volt supply that powers the flight controllers.
PPM Output: The AR7700 offers PPM output which you cannot get when running a remote receiver alone. PPM is widely implemented in many systems and offers the easiest path for many applications. Prime example is the Immersion RC Vortex; It�s compatible with the AR7700 out of the box with PPM, but if you want to run a remote receiver you have to build a cable and go through some configuration steps.
Transponder Power: On some aircraft like the Immersion RC Vortex there is nowhere to plug in a transponder for racing. The AR7700 provides extra ports available giving you a simple and direct option to power your transponder.
SRXL and Remote Receiver are both digital protocols, much like S BUS. The AR7700 SRXL and Remote Receiver protocols are both capable of 11ms latency with 2048 resolution, and support up to 18 channels.
It is very similar, but not the same: The SRXL featured in the X Plus receivers (AR9020, AR12020 and AR12120) do not have the ability to ensure proper timing for the channel outputs. Note that this is not a problem when used as intended with the X Plus module, but it could cause problems if trying to use the SRXL output to control a flight controller. Also, the AR7700 is backwards compatible with the X Plus module if you wish to have additional servo outputs, but it has the check built into the code to ensure proper timing with flight controllers.
Yes: The AR7700 can be used without the supplied remote receiver, but will be limited to parkflyer range. Note that parkflyer range is suitable for most racing applications, but if you want to fly far and low, or are flying a mid to large size model, it is always best practice to utilize the remote receiver.
No: Just like a standard 7-ch Spektrum receiver the AR7700 has 7 sets of pin-outs (connectors ports), but the number of channels is dependent on what transmitter you are using and what output you have selected. PPM output can support up to 8 channels, SRXL and Remote Receiver output can support up to 18 channels.
Example � DX6 will only support 6 channels, DX7 7channels, ect, on up to 18 channels with the DX18.
Most common servos use an analog PWM (pulse width modulation) data stream that only controls one function. �Serial� refers to a type of protocol that combines all the signals into one data stream (one wire). PPM combines all the control signals into one data stream (one wire) and supports 22ms latency for up to 8 channels. A digital protocol like SRXL or Remote Receiver steps up the performance with up to 18 channels @11ms and 2048 resolution. Serial protocols enable a 3 wire lead to supply power and all the command signals from the receiver to a flight control system. Serial protocols are not compatible with conventional PWM servos.
Technical questions about this Spektrum product should be directed to Horizon Hobby's Product Support Department:
Horizon Hobby, LLC. ATTN: Product Support 4105 Fieldstone Road Champaign, IL 61822
To place a Horizon Hobby Support Inquiry please visit our Inquiry Form Support Phone:(877) 504-0233 Fax:(217) 355-1552
If you would like to purchase this product, please go to the Store Locator or contact the Horizon Hobby Consumer Sales Department:
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