This is the starting point of rxsr for frsky receiver. At a smaller shape factor, it provides the same full range diversity as XM +, but also provides an s.port pin that allows telemetry back to your transmitter.
Let's take a closer look at this receiver and its functions.
Frsky rxsr receiver
The frsky rxsr remote receiver is a very small full range receiver from frsky, with all the functions of their XM series receivers, but with additional s-port telemetry.
Rxsr is basically a smaller version of the once popular xSr receiver, with smaller form factor and still maintaining full range capability.
The rxsr is the smallest receiver from frsky and can complete the complete 16CH SBUs and intelligent port telemetry. This is the current de facto choice for the forsky receiver in the Mini Quad ads, as it is small and offers all the features for the racing car.
You can get your own frsky receiver rxsr from horusrc for $20
Specifications and functions
Dimensions: 16 * 11 * 5.4 mm (L * w * h)
Weight: 1.5g
Number of channels: 16CH
Working voltage range: 3.5V ~ 10V
Firmware update
Compatibility: accst D16 / access mode
Small size, light weight
Telemetry support s.port
Full range
Switchable SBUs / CPPM signal output
Support redundancy function
IPEX connector, replaceable antenna
redundancy
The frsky receiver rxsr has redundancy features that help you connect two receivers in a master-slave configuration. This allows your slave receiver to work properly even if you lose the range of the master receiver, thus maintaining your control of the ship. It's a neat function when you're on a long-range flight, and it helps you protect against minor glitches.
The only drawback is that you will need two separate transmitter modules connected to each receiver. A receiver (Master) will be bound to the xjt transmitter inside your frsky radio, while the slave receiver will be connected to the external xjt module on the same radio, or you can even use a separate radio to control it.
Because of the complexity and extra cost of using it, it is only useful for long-range pilots, not racing cars or regular freestyle boats. If you often invest in remote protection devices like the R9m, I suggest.
Connect to your flight controller
In the previous article, we saw the wiring of the frsky XM + receiver. The same method is used for rxsr receiver.
Unlike XM +, the rxsr has a connector for the receiver to connect the signal and power lines, so it makes wiring a little easier.
Connect the SBUs line to the SBUs in the flight controller pad (do not connect the "SBUs input" line in the rxsr to this one, this line is used for redundant connection).
To power the receiver, you should also connect the 5V and GND pins to the corresponding pins on your flight controller. This is enough to power your receiver and provide the SBUs signal to the flight controller, but if you also need telemetry, you will need to connect the s.port pin to a free UART RX pin on the flight controller.
If you are using a F3 / F4 flight controller, you will not be able to use the s.port line directly from your rxsr receiver because the F4 and F4 boards have only one hardware inverter and cannot receive the reverse s.port signal from your receiver.
Frsky kindly opened the S. port pad on the rxsr without inversion. You should solder a small wire, very carefully to that pad and to a free UAR RX pin on your flight controller to make s.port work.
The image above shows a non inverted S. port pad, or even a non inverted SBUs pad, if you need it.
The frsky rxsr receiver is undoubtedly one of the best receivers that frsky has ever launched, because it contains many functions in a small form factor. It has become a de facto choice for my mini quads, even Mini quads, because it's so small that it can fit, wow, as well!
Rxsr is a receiver that I can recommend without hesitation. As an additional bonus, the receiver can also upgrade the new access protocol, which will make OTA update as well as!
In the last article, we discussed how frsky x9d became the de facto choice of RC for some time, until it was replaced or upgraded by the version of frsky x9d plus.
Well, frsky has managed to upgrade the model again to offer users with the special edition of frsky x9d with a few upgrades and a really cool looking carbon fiber body!
Let's get started and see what the new radio from forsky can bring us and whether it's worth so much money.First impressionsThe out of the box experience is similar to the frsky Taranis x9d plus version.
You can get the following in the package:Taranis x9d+ChargerRope (collar)Battery (pre installed)Carrying condition1GB SD card (pre installed)Like x9d plus, its content is basically the same.
You will get a perfect chassis, which can perfectly carry your transmitter and its accessories without fear, because it is a rigid chassis with good foam and protection of your equipment.Build qualityFrsky x9d special edition has the same build quality as its predecessor, but with a slightly upgraded switch, pot and feel.It also has a nice looking carbon fiber body, I believe everyone will like it, because let's face it, CF is always very cool;)Gimbals on the x9d plus se is the upgraded M9 Hall effect gimbals, which will give you a super smooth feel and precise control, because it is more accurate than the traditional gimbals based on potentiometer, which you find in the standard version of x9d.
This is the second most noticeable upgrade you'll find in the special edition over the standard edition.To switches, they are decent quality and switches are good tactile with good 'click ness'.
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