Hoochykins Posted July 16 Share Posted July 16 Looking for a good reliable cheap Receiver with a vario to work with my 4 in 1 Radio master Zorro (and TX16S when I get it). I do have a couple of Spektrum receivers but I believe you need the telemetry box for them then the actual vario sensor on top of that. I've been buying Flysky but their altitude sensor doesn't do vertical speed so looking for something else for my thermals. Quote Link to comment Share on other sites More sharing options...
MaxG Posted July 17 Share Posted July 17 Have a look at the Lemon Rxs. They have varios that work with my Tx16s and they also have gyro stabilisation should you wish to use it. I have found them easy to bind to my 4in1, they are DSM. Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 17 Author Share Posted July 17 (edited) Don't they also require a standalone telemetry box that the sensors connect to? It seems the Vario is built into this box so it would need a lemon RX and the telemetry box? I'm thinking the better long run solution would be to get an ExpressLRS module for the transmitter then I can buy the Radiomaster receivers with Vario built in and I will also be able to use ExpressLRS going forward? I can get the receivers from China for £30 with built in Vario: https://www.hobbyrc.co.uk/radiomaster-er8gv-8ch-elrs-receiver-with-vario Am I missing any negatives to doing this? Edited July 17 by Hoochykins Quote Link to comment Share on other sites More sharing options...
PDB Posted July 17 Share Posted July 17 (edited) 51 minutes ago, Hoochykins said: Am I missing any negatives to doing this? As the uptake of ELRS on fixed wing RC models is currently low getting support will be patchy if you run into problems setting the module and RX up. A flying buddy is currently setting a fixed wing ELRS module and RX up and he is making good progress but it is a learning curve. If you're the type who is used to working through technical hurdles using online resources to resolve then you shouldn't have any issues. I'm following the ELRS developments in the fixed wing world with great interest, who knows where it will go. 👍 Edited July 17 by PDB Quote Link to comment Share on other sites More sharing options...
Kim Taylor Posted July 17 Share Posted July 17 3 hours ago, Hoochykins said: Don't they also require a standalone telemetry box that the sensors connect to? It seems the Vario is built into this box so it would need a lemon RX and the telemetry box? No, the Lemon Rx has all the necessary gubbins 'built in' to the receiver. I've just started using my first 'Gen2' Lemon rx, so haven't set up the vario yet (no real use in my application) but the previous model telemetry rx's had vario and height built in, which definitely did work as a 'stand alone' item. No reason to assume that they'd take a backwards step. Kim Quote Link to comment Share on other sites More sharing options...
Outrunner Posted July 17 Share Posted July 17 I've got some 7 & 10ch Lemon gen 2 receivers and there is no separate box required for the many sensors built in to the receiver. The only external parts are the voltage or current sensor cables and/or optional satellite receiver. Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 17 Author Share Posted July 17 (edited) I have looked again and I was wrong, it's all in one receiver, that saves me going over to ExpressLRS now so much appreciated. I think ELRS will be a future move for me. I've got myself a Lemon RX on order so looking forward to trying it out. Thank you! Edited July 17 by Hoochykins Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 22 Author Share Posted July 22 Received the RX but haven't some issues getting it to work correctly on EdgeTX. I can get it to connect with DSM but keeping the Subtype setting on Auto causes the control surfaces to all go to the maximum when it should be central, when trying different Subtypes such as 2 1F, 2 2F, X1F, X2F, R1F gives different results but either choppy servos or no servo movement, also the motor will beep as if the ESC is receiving no signal from the RX. It's inconsistent also, at one point I had all the surfaces running as normal but on -100% for the throttle it would still run at it's slowest speed. If it was consistent on each setting it would be helpful but it's not. Has anyone setup one of these on EdgeTX that could give me the correct Subtype and I will see if I can get it working from there? I'm thinking it could be a faulty RX but far more likely I am just not changing a setting correctly, although I have had zero with issues with a mixture of other different branded receivers. Quote Link to comment Share on other sites More sharing options...
Kim Taylor Posted July 22 Share Posted July 22 (edited) I've got exactly the same setup and it's bound (and works) using the X2F protocol. Also double check your connections - the 'first' set of pins is Ch7, then the usual TAER spektrum channel order. It's easy to get it wrong (guess how I know??) Kim eta On power up of the Rx, the servos do momentarily twitch to (something like) full deflection, but return to neutral after a second or so. Edited July 22 by Kim Taylor extra detail Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 22 Author Share Posted July 22 5 minutes ago, Kim Taylor said: I've got exactly the same setup and it's bound (and works) using the X2F protocol. Also double check your connections - the 'first' set of pins in Ch7, then the usual TAER spektrum channel order. It's easy to get it wrong (guess how I know??) Kim eta On power up of the Rx, the servos do momentarily twitch to (something like) full deflection, but return to neutral after a second or so. Awesome, thanks! X2F was the one I was having the most luck with so as yours is working on that I will stick with it and hopefully I can find out what I am doing wrong. Much appriciated. Quote Link to comment Share on other sites More sharing options...
Outrunner Posted July 22 Share Posted July 22 I've got a couple of those 7ch Lemons, set as protocol DSM, X2F, no flapping about at switch on. I find the instructions on the Lemon website very helpful, they do a quick start document a full setup document and telemetry document. Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 22 Author Share Posted July 22 Yeah I read them as I suspected they would give me the reason but there isn't really anything helpful other than the basics. Any port I try with the ESC I just get a beeping motor on DSM, X2F, usually you give it a bit of throttle and it detects it and beeps to give the cell count etc but I am not getting anything. I will keep fiddling but it's proving awkward. Quote Link to comment Share on other sites More sharing options...
Outrunner Posted July 22 Share Posted July 22 Have you tried a servo in the throttle port? Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 22 Author Share Posted July 22 After a few hours of trying to get it working I decided to start swapping out hardware starting with the ESC first. It worked first time! I did not think an ESC would cause these kind of issues when it's been working fine with another receiver for many flights. Very odd. Guess this is the perks of using second hand gear. Thanks for the help guys as always! Quote Link to comment Share on other sites More sharing options...
Glenn Philbrick Posted July 22 Share Posted July 22 2 hours ago, Kim Taylor said: I've got exactly the same setup and it's bound (and works) using the X2F protocol. Also double check your connections - the 'first' set of pins is Ch7, then the usual TAER spektrum channel order. It's easy to get it wrong (guess how I know??) Kim eta On power up of the Rx, the servos do momentarily twitch to (something like) full deflection, but return to neutral after a second or so. This might be if you have stability selected, some spektrum receivers do the same. Quote Link to comment Share on other sites More sharing options...
Kim Taylor Posted July 22 Share Posted July 22 10 minutes ago, Glenn Philbrick said: This might be if you have stability selected, some spektrum receivers do the same. You'd think that it would make a difference wouldn't you, but no, it does the same with gyros on or off. Works perfectly fine in flight, so I'm ignoring it, unless I'm told that it's an issue. Kim Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 22 Author Share Posted July 22 Mine also still goes full throw before settling in the centre. @Kim Taylor do you use the vario and if so what settings on the Vspeed sensor? I can see a lot of settings for it and I've settled with Kph with no decimal reading ratio. Of course I haven't been able to fly yet but I'm trying to get it to give me as minimal beeping as possible while still providing me with a good Vspeed reading. Quote Link to comment Share on other sites More sharing options...
Kim Taylor Posted July 22 Share Posted July 22 (edited) No, I don't use the vario, I have no need for it. I did have the feature activated on an older Lemon rx, albeit inadvertently, the rising and falling tones were very easy to hear and interpret, but a bit off putting when I wasn't expecting them!! There's a big thread on RCGroups which covers the g2 Lemon rx's, I'm sure that any answers you need will be there. I'll see if I can find a link and come back. Eta this is it.... https://www.rcgroups.com/forums/showthread.php?3496899-The-official-Lemon-2020-receiver-thread-NEW-USERS-read-first-8-posts-) Edited July 22 by Kim Taylor Link added Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 22 Author Share Posted July 22 11 minutes ago, Kim Taylor said: No, I don't use the vario, I have no need for it. I did have the feature activated on an older Lemon rx, albeit inadvertently, the rising and falling tones were very easy to hear and interpret, but a bit off putting when I wasn't expecting them!! There's a big thread on RCGroups which covers the g2 Lemon rx's, I'm sure that any answers you need will be there. I'll see if I can find a link and come back. Eta this is it.... https://www.rcgroups.com/forums/showthread.php?3496899-The-official-Lemon-2020-receiver-thread-NEW-USERS-read-first-8-posts-) Legend, thank you Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 24 Author Share Posted July 24 I've been looking quite a bit online to get a signal strength warning setup on this but from what I have read it doesn't use the normal RSSI output and uses either TRSS or FLss. I know what they mean but I can't find any information on what to set my warnings at for low signal. Also I don't know which is the best to use (if either) or should I be looking at other telemetry outputs or do I need to look into scripts to give accurate signal strength outputs at the receiver? Quote Link to comment Share on other sites More sharing options...
Kim Taylor Posted July 24 Share Posted July 24 (edited) I use the same rx wirh a TX16S Mk2 running Edge Tx. I get a call out on RSSI, although the actual figures have to be adjusted, as (I've read somewhere in the destructions) their values don't correspond with Spektrums. I think it's in the separate telemetry instructions file:///C:/Users/Kim/Downloads/Telemetry%20with%20the%20Lemon%20Rx%207-%20and%2010-Channel%20Receivers%20R1.1.pdf Yes, thought so - it's on page 13. That all refers to a Spektrum Tx, but as I said, on my TX16 it reports RSSI Low as you would expect (with the caveat that it isn't really RSSI, just a number (should all be clear once you've read P13). Mine gave me a fright on the first flight when it gave an RSSI Low warning 😧 , but I realised that I hadn't altered the warning and critical figures in the telemetry setup screen. No unwanted warnings on subsequent flights. Kim eta I don't know why that link hasn't posted correctly, but paste it into your browser & it'll work Edited July 24 by Kim Taylor link doesn't work Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 24 Author Share Posted July 24 Thanks Kim. The link you have sent is link to the PDF on your computer so won't work. If you wanted to add a PDF or similar use the 'choose files...' button at the bottom of the reply. I think I have found what you were linking to, I have attached it. If it's not then it has answered my question 🙂 Telemetry with the Lemon Rx 7- and 10-Channel Receivers R1.1 (2).pdf Annex 😄 Understanding RSSI The Lemon RSSI (Received Signal Strength Indicator) number is sent back from the model by telemetry and displayed in the “A” field on the transmitter screen, as shown in the photo of a Spektrum DX8e screen. RSSI represents the strength of the radio signal available from the receiver front end for control of the model. It should read close to 100 when the transmitter is next to the model and drop with distance until, at a value typically around 20-30, the telemetry signal is no longer strong enough to convey the data and the display freezes. As the receiver has excellent sensitivity, reliable control will continue well beyond this point. The vertical bar symbol in the top left of the photo shows that telemetry is live and being received. In this case the bars are at zero and indicate that the telemetry signal is soon to be lost. Compare with the full-strength Telemetry signal bars in the pictures on page 7. Depending on the transmitter and software the number of bars may give an indication of the telemetry signal strength. Changes in the RSSI reading can be conveniently explored with the transmitter in Range Test mode. Note that putting a Spektrum transmitter into Range Test mode attenuates output power enough to reduce range by a factor of about 30.14 Thus effective control at 35m (115 feet) in Range Test mode (which should be easily attained) should translate to about 1 km (3600 feet) range at full power. There are, however, many variables involved, so treat this as only a rough guide. There is a very good probability that you will get much greater range than this. The Lemon RSSI number is a relative value and cannot be directly compared to other signal indicators such as antenna fades reported by Spektrum or the FrSky RSSI number. Lemon has stated that the maximum signal measured after the LNA front end when the transmitter and receiver are right next to one another is displayed as a value of 100. A drop in “RSSI” by one unit corresponds to a drop in signal strength of approximately 0.6dBm. At the Lemon recommended minimum reading of 20 the signal is therefore 0.6 x 80 = 48dB down. While the receiver has a lot of reserve sensitivity and should continue to work even beyond that point, it is not recommended that this be taken for granted. Quote Link to comment Share on other sites More sharing options...
Kim Taylor Posted July 24 Share Posted July 24 Yep, my bad, as they say nowadays. That is indeed the document which I was trying to link to. 🙄 Kim Quote Link to comment Share on other sites More sharing options...
Hoochykins Posted July 24 Author Share Posted July 24 Thanks, so the gist from it is change the minimum system values for RSSI signal alarms to 20 - 23 from the default 42 - 45. Quote Link to comment Share on other sites More sharing options...
Kim Taylor Posted July 24 Share Posted July 24 I think I left a bit more margin than that- seem to recall 25 - 28. No rogue alarms since (although to be fair, only one flight). Will be going again at the weekend, having corrected a very rearward c of g on the model (that'll teach me not to take the instructions too literally) Quote Link to comment Share on other sites More sharing options...
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