π
2015-11-14 00:00
in Rc
The Brotronics Broversity RX is an LRS receiver designed to work with a backup 1S lipo which gets recharged from the main power source and can used to power the emergency beacon and a backup twitter to help you find a crashed model in tall weeds :)
If you are interested in that, I also wrote a page on the smaller Brotronics PowerTowerRX without diversity
It's a great LRS module. On top of having the diversity receiver:
It's a good module with good reception (not like the crap from Orange)
Support for 11 ports (7 PWM, RSSI/LBEEP, Buzzer, RX, TX/Sbus/SUMD/Spektrum)
RX/TX are conveniently wired on 3 adjacent pins (but you have to use the TX pin for SUMD, and GND/5V from the header next to it)
SBUS actually works as the module includes a hardware UART inverter, making SBUS possible. Just use the 3 pins and configure port 11 as SBUS.
However, as a downside the module, or configurator for the module, does not allow setting any port as ANALOG. As a result, you cannot pass 2 analog voltages back to an Frsky receiver via the telemetry link.
Sadly, the author seems to provide absolutely 0 support for his module, and the documentation was minimalistic to say the best. Yet, it's a great little board, but sadly it comes with virtually no instructions, and the author hasn't replied to any of my Emails. I did figure out how to use it in the end, but it took longer than it should have, so I'm going to do the documenting work here:
Wiring is not super obvious, and neither is how everything works, so this little video should be worth a thousand words:PPM support on Ardupilot only works with 12 channels as of AP 3.4 (you can map channels 13-16 to actual pins on the module)
SUMD can be connected to a pixhawk via the spektrum satellite port as long as you route power to a 5V line and not the 3.3V on the satellite port. This supports passing 16 channels to pixhawk.
SBUS, compared to other modules like hawkeye, just works, plug it in and you're in business
However, both SUMD and SBUS will prevent you from using the TX pin to send serial telemetry back, so you have to chose serial telemetry, or 16 channels passed to pixhawk
If you pick SBUS, note that scaling and endpoints are different, so you'll get slighly different values read with SBUS compared to PPM or SUMD.
Here's the RX configuration screen:
you can see both dipole antennas at a 90 degree angle
the buzzer tells me if TX signal is lost, and acts as a lost model finder
Too bad I had to cut all of this open to get working RSSI :(
Wiring is not super obvious, and neither is how everything works, so this little video should be worth a thousand words:
See more images for Brotronics Broversity RX, the Missing Manual
