How to get full range from the 5th channel of ExpressLRS PWM receivers
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- čas přidán 28. 06. 2024
- A few people noted they were having issues getting more than 4 channels out of the various 5 channel PWM ELRS receivers. I hadn't tested this before, so sounded like a good opportunity to see how it worked.
I was using some RadioMaster products in this video... although as it's ELRS you can use any RX to any TX. However, RadioMaster do make some quality gear, so here are some affiliate links to them if you want to check them out as it really helps out my channel -
ER5A RX (pins at side) www.radiomasterrc.com/product...
ER5C RX (pins on top) www.radiomasterrc.com/product...
TX12 Mk2 Radio www.radiomasterrc.com/product...
If you liked this video and want to show your support please feel free to join my Patreon supporters here / currykitten or if you decide to shop at Banggood, here's a general affiliate link which helps me out if you use it www.banggood.com/?p=E81211714...
If you want to look at other ways of supporting my channel, then check out all the ways you could help out here www.currykitten.co.uk/support-me/
Thanks, this video helped me! :) I'm using ver 3.1.1 with a BetaFPV PWM module, but even so, channel 5's input on the RX module definitely still needs to be remapped in order to get full resolution.
The fact is that ELRS uses the channel 5 input for arming, ALWAYS! So ELRS treats channel 5 as a switch. This is the crucial take-away here.
I chose to arm/disarm channel 3 (the throttle) on my radio, so I can afford to remap channel 5 on the receiver.
It however now works for me. I can now have the left and right ailerons on different servos, using full range on all 5 channels of this receiver:
Elevator: input 1, output 1
Rudder: input 2, output 2
Throttle: input 3, output 3
Left Ail: input 4, output 4
Right Ail: input 6 (!!!), output 5
So on the radio's mixer, I'm sending my Ailerons to the Radio output channels 4 and 6, which means they'll arrive at the receiver's input channels 4 and 6, and will the receiver will output them on ports 4 and 5. It's a hack, but it works.
Bravo thank you so much!!!! Spent the last 2 days fighting this - 8 ch full/100hz, thank you so much - full rez flaperons with ch 1/6. Fantastic. Also running elrs 3.3 on Frsky R9M/R9mini ( thx for that as well ). Hobbies are so relaxing lol! whew.
Glad it was helpful - there's been some useful changes since I made this though, so much better support for large amounts of PWM channels with full range on them
Worked perfect! got my flybar heli going on 5 channels now. Thank you.
Great to hear!
I wish there was a pistol grip ELRS radio for ground vehicles. Great tutorial 👌
Same here, I wish there was at least an accessible OpenTX dev board that allows people to create their own radios without having to buy a new radio to gut it for parts.
Would be great wouldn't it - I think the closest we can get (maybe) is trainer cable from a car radio into an ELRS radio and then to the car. Which is a very long-winded way of doing things, but better than nothing I guess
@@CurryKitten Albert Kim did something similar with crossfire.
@@RCinginSC Hi mate, Have a look at what's going on with unlimited control and UHD FPV over the 4G and 5G network using Ras PI 4 mate.. Its absolutely insane, I believe that's the way its heading as we go forward. Ras PI 4 boards have gone from $20 to $300 in some places as people click onto this infinite RC link tech. For those of us into ground vehicles or boats and also cruising wings, It doesn't get any better🙂@CurryKitten - You could build one up easily with your skill set ...Give it a go!
Fantastic video, Wayne! Thanks a bunch! 😃
Stay safe there with your family! 🖖😊
Cheers MC!
Thanks CK, this exact issue has been bugging me for ages! took me a while to find your expert answer but really glad i got there in the end, thank you!
Beers on me any time you're down the Horse and Jockey 😊
Glad it was helpful :)
Liked, Subscribed and Thanked ! you just save my set up ! 5 channels is the bare minimum for a standard airplane using 1 servo per wing. Thank you so much, have a great day !
There's something more exciting coming to ELRS which is SBUS with the option to drive additional PWM channels with RX's like this as well!
Good review, and, +1 for the 8ch Elrs pwm receivers (hope) to come soon. ;o)
Thaaaank you!! This video helped me setting up my glider
Glad I could help!
I'm an ELRS n00b and this is brilliant!
Glad it was helpful
I hope I was a muse for creating this video by asking you how to do that on a different video couple of days ago :D, thanks for doing that!
Yes indeed - you jogged my memory into doing this. Cheers
Excellent. Thanks a lot 👍
Welcome 😊
❤ useful info..
perfect explanation!
Thanks!
Thank you
Thank you....
Welcome
Another excellent tutorial easy to follow and understand... Thank you.
You're very welcome!
Since I was aware of the basic approach - using a kopilot its necessary - I skipped most of this. I hope you told viewers to drive the over the air ch5 high permanently. Otherwise some other issues with ELRS get wonky.
Hello! I have a LEFEI SN-L v2 flight controller which I access via sbus with ELRS with a Matek CFRS to SBUS converter. The problem that I have is that the flight modes are made with channel 5 of 3 positions and in ELRS, as you mention, there are only 2. The serious question is if the same thing that you explain for PWM works for CROSSFIRE? Thanks a lot
What ELRS aren't very good at is looking at older flight controllers, or protocols - so I don't think they'll ever have ch 5 as anything but a binary switch. ELRS was developed for latency over everything else, and the less full range channels they have the faster they can run. Crossfire was mainly developed towards long range, so aside form the fact it can speak SBUS (as well as CRSF) you've always had full range channels to do with as you please
I didn't realize ELRS had such limited scoop. I suppose nothing is for nothing.
Learned a lot , but not sure if I understood it all considering you had pushed switch mode from 8 to 16 channel.
Is there any way to run elrs with more than these 5 channels ?
I need to add a camera gimbal which requires additional 2 channels beyond the usual 3 needed for a glider and 4th for the motor.
But how would I get the 5 th and 6th channel needed for control of the camera gimbal pan and tilt ?
Or is that what you meant that is still missing in the elrs receiver portfolio ?
It was missing, but watch a video I'm releasing on Thursday for some gear that might satisfy your requirements. Also, ELRS are bringing SBUS out in their latest release (which is in Release Candidate at the moment)
Can i use this elrs er5a for fpv flight controller
Please mention the rx tx pin
Change it from 8ch to 16/2 and you will get full resolution
I thought the telemetry ratio only has someting to do with how often a telemetey package is sent back to the TX? But appareantly it also changes the number of position that can be sent in a channel?
Don’t really understand this🤔
I would guess this is down amount of data coming in/out and it having to reduce the amount of bits it can transfer per channel to keep up with the demands of the telemetry
Hi, I googled it without success, so I will try asking here: Is there any branch of ELRS with PWM outputs with the 0-100 % signal for DC motors? I would like to control motors by transistors directly connected to the RX outputs without ESCs of an FC.
This almost certainly doesn't exist. I did think you could actually drive a DC motor with a transistor via PWM. But I haven't read up in proper detail. Perhaps you need to stick an arduino in the middle to interpret the PWM signal and put out the necessary signal to your motor
So you know if this will work on an sbus receiver? Will I need to get a pwm receiver in order for this to work?
Since making this video - ERLS has developed more and you can pretty much get full range out of all channels, so it should be fine on SBUS as well. if you look up some videos I made from a few months ago flying my legacy autopilot in my mini talon, I used a mix of SBUS and PWM to fly
Grest stuff.
What do I select in the confiqutor to update the ER5A reciever to version 3 .. seams to not listed.
It's there, but probably not what you are expecting. The ER5A runs the DIY firmware, you'll see it if you join the wifi network that the RX will provide and look at the webpage at 10.0.0.1 where it tells you. The device category in the configurator is DIY 2.4 GHz and the device is DIY 2400 RX PWMP
@@CurryKitten Oh wow thanks a million.. wouldn't have picked up on that straight away..
From New Zealand
@@CurryKitten
Do you know if there is anything on the horizon to read battery volts for these recievers that may a use channel for telemetry like Graupner do?
There's discussion on this, I think it's likely be a pad you'd solder power onto rather than a channel. But there's nothing available (that I can see) right now
Can it read the battery voltags?
No. If I use these in FPV, I use a camera that has it's own OSD with voltage on. There's discussion in ELRS about how this could be implemented in the current hardware, but what I'd expect we might eventually get is a PWM RX with a VBAT input so it is easily able to send back telemetry
Hi do you no how i can get a 3 position to work on a pocket trying to get a kopilot lite to with radiomaster er4 receiver but channel 5 is only 2 position thanks
Have a look at what I do at 3:00 Ch 5 in ELRS is always a binary switch, so the answer is you don't use Ch5, you redefine the output to Ch6 and use that instead
Ya doesn't work ers4 receiver no 5th channel listed so setup with just a 2 postion switch so stability mode and return to home but now I can't get the kopilot neutral calibration to work and when I turn the radio of it doesn't go into return to home haven't a clue what I've done wrong thanks
Ok, so the 4 channel version. In which case how are you using ch 5 with the kopilot.. it can't talk CRSF can it?
@@CurryKittenstill asine mod to channel 5 but only works as a two position switch rth and stability mode no manual mod
Could you teach me how you combine Ch4 and Ch6?
just go to mixes and set both ch4 and 6 to use the same input
If I have an ER8 receiver, can I set Ch5 to ch 9 in the ELRS WIFI and then set the mixer to Ch9 on the TX16, which is then set to ch5 on the RX? Google translates.
Wenn ich einen ER8 Empfänger habe kann ich dann im ELRS WIFI beim Ch5 den ch 9 einstellen und bei der TX16 dann den Mischer auf Ch9 einstellen, der dann beim RX auf ch5 ist? Google übersetzt.
Yes. Since the time I made this video, ELRS is much better on PWM, so check out some of my later videos where I reassign channels and basically skip over channel 5. Ja. Seit ich dieses Video gemacht habe, ist ELRS bei PWM viel besser, also schauen Sie sich einige meiner späteren Videos an, in denen ich Kanäle neu zuordne und Kanal 5 im Grunde überspringe.