Houndpup Rc
Elite member
Because it goes thru one wire.
Help! Getting into multirotors - Looking for my first quadcopter
- Thread starter SkyEye
- Start date
PPM is serial, but mostly unsupported these days. It is analog in that each channel is still represented by pwm rather than binary numbers. Each channel's PWM in succession in a loop. It is limited in the number of channels that can be passed.
Newer protocols are digital and can pack more channels in smaller space and at a higher refresh rate. There is also checksums so the receiver can validate that it received a valid signal. There is also bidirectional chatter between the TX and RX for sharing telemetry back from the aircraft to the ground. Technically your new RX is also a TX so it can talk back to the ground.
This is all starting to make a little more sense now. Thanks everyone.
www.getfpv.com
www.getfpv.com
Thoughts on these ones? They sort of caught my eye. For the second one, I've never even had a Li-ion powered aircraft but the extended flight time is intriguing
DarwinFPV Baby Ape Pro 3" Quadcopter w/ Caddx Ant - PNP
The DarwinFPV Baby Ape Pro is a 3" quadcopter that features the upgraded Caddx Ant camera for those wanting to dive into either beginner or professional FPV skill sets. This quad includes and F411 flight controller, 15A ESC, and a 40 CH Switchable VTX for the ultimate FPV flight experience!
www.getfpv.com
Rekon FPV Rekon35 Nano LR 3.5" 2S 18650 FPV Drone - Analog
The REKON 35 Analog is based on designs by Dave_C FPV. This 3.5-inch platform is an evolution of a nano long-range concept adapted to carry a camera such as the Naked GoPro or Insta360 while staying under 250g.
www.getfpv.com
Thoughts on these ones? They sort of caught my eye. For the second one, I've never even had a Li-ion powered aircraft but the extended flight time is intriguing
Well, the 2nd one is in stock... Might be easier to get. LOL I was kinda leaning tword it anyhow. Get the PNP version and solder in your own RX. Longer flight times are a good thing. Both seem good for a starter drone.This is all starting to make a little more sense now. Thanks everyone.
DarwinFPV Baby Ape Pro 3" Quadcopter w/ Caddx Ant - PNP
The DarwinFPV Baby Ape Pro is a 3" quadcopter that features the upgraded Caddx Ant camera for those wanting to dive into either beginner or professional FPV skill sets. This quad includes and F411 flight controller, 15A ESC, and a 40 CH Switchable VTX for the ultimate FPV flight experience!
Rekon FPV Rekon35 Nano LR 3.5" 2S 18650 FPV Drone - Analog
The REKON 35 Analog is based on designs by Dave_C FPV. This 3.5-inch platform is an evolution of a nano long-range concept adapted to carry a camera such as the Naked GoPro or Insta360 while staying under 250g.
Thoughts on these ones? They sort of caught my eye. For the second one, I've never even had a Li-ion powered aircraft but the extended flight time is intriguing
I've flown Li-Ion on all sorts of stuff including some of my first quads I built 8-ish years ago. The Max power is not as good, but extended runtime can be awesome. Got my Flying spider to last MUCH longer in Flite Fest Combat instead of dropping out after about 5 minutes.
Houndpup Rc
Elite member
ooh. okay thanks! doesn't ppm have more latency too?
Yeah, it can. Higher refresh rates usually translate to lower latency. I've intentionally tried to be "smooth" aka more latent in my control inputs even though I run higher refresh, lower latency protocols. I trend tword freestyle/cinematic/endurance/touring rather than hyper fast ragged edge racing or crazy fast flippy floppy. Even back in my racing days, Smooth and controlled was often faster than ragged edge ripping. Consistency FTW!
Thanks for all recommendations and sound advice.
While I have the thread, I've got a related question.
Are there any flight controllers that work well with DSMX receivers?
Is it a bad idea to stick with my old DX8/DSMX if I am getting into flight controller territory?
My main 'wants' in my fixed wing FPV flying is failsafe-RTH and an OSD, no matter how basic.
While I have the thread, I've got a related question.
Are there any flight controllers that work well with DSMX receivers?
Is it a bad idea to stick with my old DX8/DSMX if I am getting into flight controller territory?
My main 'wants' in my fixed wing FPV flying is failsafe-RTH and an OSD, no matter how basic.
An eight channel will be fine. About anything can do spectrum. You can use the OSD for telemetry rather than having telemetry alerts on your radio since Spectrum telemetry generally doesn't work and play well with flight controllers.. Just use the basics on the OSD. Battery monitoring and RSSI if you can, forget the artificial horizon and sidebars, they just obstruct the view without much added benefit.
What do you mean by 'About anything can do spectrum'? Maybe I am looking in the wrong places but the FCs I am looking at like the speedybee F405 fixed wing or ZOHD Kopilot seem to support protocols like ELRS or Frsky more easily than spectrum. I am yet to find a straight forward way to connect a DSMX receiver to one of those FCs.
I use AR610 and Lemon RX 7-ch receivers (recently got a diversity satellite), and I was hoping there was a way I could still use these receivers with whatever flight controller I decide to get. Hopefully I am not misunderstanding how this works.
A follow on question is, do I need an FC to have an OSD or is there some standalone OSD I can use?
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Houndpup Rc
Elite member
Yeah that's what I thought. You can only use the protocols that are listed as supported by that FC. But @LitterBug knows a LOT more about that kind of stuff than i do.
The FCs have serial ports that the RXes can be connected to. You MUST use a RX with serial output like the diversity satellite. The Firmware that runs on the FC (INAV, BetaFlight, Ardupilot, etc..) support the different radio protocols. You wire the RX to a serial port on the FC, And then configure the firmware telling it what port, and protocol it is. POOF it works! Some Firmwares can autodetect the RX protocol as long as it is connected to their "standard" RX port.
Most modern FCs have an analog OSD built in. Old school was to use an external OSD connected to the FC via a serial port. You could still use an external OSD like MINIMOSD, but it requires seperate configuration and firmware and must be connected to a serial port on the FC to get it's data from the firmware.
HD FPV gear all has it's own OSD gear built in and connects to the FC via a serial port.
Thank you. That is very good to know. I will double check that the FCs I am looking at can accept the cable from my satellite receiver. Hopefully I can avoid having to solder the receiver to the F405 (soldering and me aren’t friends yet).
I am sure I will have a plethora more of questions after I start messing around with the FC but that should get me started.
You may need an adapter cable or to solder....
Is there anyway you could send a picture of that? I don’t have the FC yet but it would be great to refer to that once I do
Well, there is one thing I forgot about the older Spektrum/LemonRX Satellite receivers. Most of them need 3.3V and are not tolerant of 5V. It has been a good while since I've hooked one up to something that didn't have a dedicated DSMX port. I started digging deeper and there is no 3.3v pin on my speedybee f405-wing FC or Matek Fxxx-wing FCs. The newer Spektrum satellite RXes are tolerant to higher voltages.
My Diatone Mamba F722-wing does have a 3.3v breakout.
What are the exact make and model of dsmx receivers you plan to use. You will need to double check their voltage requirements
My Diatone Mamba F722-wing does have a 3.3v breakout.
What are the exact make and model of dsmx receivers you plan to use. You will need to double check their voltage requirements
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I plan to use a gen2 lemon rx diversity receiver. However, I just checked the specs and it does say the input voltage is 2.7-3.3V 😬 Good catch, thank you
I’ll look into one of the spectrum satellite receivers then and check the specs
Houndpup Rc
Elite member
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