BETAFLIGHT WON'T ARM RPMFILTER arming status flag

[@ThE_SaM_22_]

Thank's man! You saved my favourite hobby more than one time with these tutorials! Please don't stop doing 'em!

[@CgitEinsteins]

Thank you Joshua Bawel 👍

[@sniperfpv2323]

Was flying today and went to arm and got the rpm filter alarm. I said I know good and well Joshua Bardwell has a video on this😀. Sure enough. Mine was a case of power cycled and it went away. Thanks Joshua!!!!

[@bigdatapimp]

Bad signal wire connection from the FC to the ESC can cause the arming flag. I've had the jumper wire plug between the boards come loose, but the power wires still had contact. The ESC and FC both made tones, but it gave me the RPM warning when I tried to arm. Once I seated the plug back in it was good to go.

[@TheDro]

i had a bad wire where the wire was broken on the inside of the sleeve so it looked fine but i kept getting random rpm filter warnings and twice the quad just shut off mid air during a flip (probably from the wire moving and then a failsafe occured) so yea, definitely check wires too! sometimes rebooting does fix it though!

[@XenFPV]

Yeah that was my issue, turned out the pins and socket between the FC and ESC was totally ripped off the board and was just about making enough contact to kind of work most of the time.

[@josefdahari]

that's crazy you came out with this I had this issue a few times with the JB xilo build it was driving me crazy!!!! Literally went out to the field to fly and couldn't arm. Rpm filter no idea what was causing it.

[@BruceLuckcuck]

I've only ever seen the intermittent RPMFILTER warning (that goes away with a power cycle) on BLHeli32 and in particular with F3-based ESCs. It's caused by a timing problem on the DSHOT reply packet. The problem actually happens on all BLHeli32 ESCs but the faster F3 processors seem to be worse. That's why there's a 32.7.2 BLHeli32 version as it addresses this timing problem.

[@pavelrumin]

Oh thanks! Have this issue since I've bought kakute stack

[@ExplorewithZac]

Great, just had to plug in the battery and the rpm filter warning is gone, doesn't even show up with the battery unplugged now. Thanks so much!

[@LumpyFPV]

Thanks for this JB! I can always count on you when my feeble brain can't figure something out. 😍

[@TOP_GUN_FPV]

I figured this one out the hard way...good thing I brought my laptop....you the boss

[@ktkt1825]

Thank you Joshua for your all you guidance and explanations! My most favorite quad toothpick (Crux3) stopped arming this morning after a wet grass landing- I'm speculating, but think moisture garbled something and arming stopped. All checked out well, but toggling/saving seemed to reset things properly. Happy again!

[@kenny2644]

I had this RPMFILTER flag! It was preventing me from arming! It took forever to figure it out but it ended up being I had two wires on my crossfire receiver mixed up! Once I put the wires on my crossfire it fixed everything! Thanks for sharing! You rock Bardwell!

[@BruceLuckcuck]

Crossfire has nothing to do with the RPMFILTER arming disabled flag. In your case you couldn't arm because your receiver wasn't working.

[@damianozentile7014]

@@BruceLuckcuck I have the same problem after an accident, but my crossfire receiver works, has a steady green light and communicates with my remote control. What can it be that I can't arm? I also checked all the wires from fc to esc with the multimeter but it seems all right.

[@antonioalemar5406]

JB, not sure if you have seen this issue but here is the description and fix. RPMFILTER flag when trying to arm. Crazybee F4 AIO whoop flight controller, BLHeli_S 16.9, BF 4.2.9. I had to lower the PID loop to 2KHz to keep the processor utilization from breaching 100% overall. I selected the matching DSHOT 150... Not working. When I switched to DSHOT300 it works fine now.

[@MCsCreations]

Thanks, Joshua! 😊 Stay safe there with your family! 🖖😊

[@MattBalder]

I've been having an interesting issue with RPM filter warning on a blheliS 4in1 running JESC. I've noticed that if I have the quad sitting on some surfaces before take off like my drone backpack that has some flexibility I can get this warning and occasionally one motor will not spin up and it's not always the same motor. If I just pick up the quad and hold it firmly in my hand it will arm no problem with no warning and all motors spin. If I take off from a smooth firm surface like concrete I never have a warning. One more detail is I'm using 3 blade folding 4" props. **new info** I folded some small pieces of aluminum tape around my motor wires that are very close and crossing my FC to ESC wire harness to try and stop interference. So far after around 15 or so arming and power cycles I have not been able to re create the rpm warning. Also this is BF 4.4

[@Aerospaceinc53]

Had me flying by the end of the video. Great work, and thanks again.

[@fabiosampaio4250]

I just receive my Mobula 8HD, and sometimes, when I have some light crash and disarm, i try to re-arm the kwad this message appears and I can't arm. If I power cycle the kwad everything goes back. No idea what is going on!

[@minwards]

I've got rpm filter flag on an emax babyhawk r with an f3 magnum tower. Bluejay is working fine so I've reverted back to bf 3.5.7 for now. Thanks for the vid

[@feryllafpv9010]

Thanks mine problem whose not listed in your video but the problem whose i setup Bidirectional on jesc esc software then i have uncheck and working now

[@11111Rich]

Same problem with mine after jest esc software install

[@moreluckthanjudgement8007]

If you're using JESC firmware on your ESCs then don't forget to flash the JESC firmware AND the JESC telemetry. They're two steps and you need both.

[@clementthoo]

Going to watch the whole playlist, this is very useful... Hey... BotGrinder fan!🤟

[@repairengineer]

I think you're onto a bug in BetaFlight. My quad randomly throws an Rpmfilter flag that will persist until the next power cycle. BLheli32 on a luminear esc with a luminear lux f7 fc. Its fine until I'm racing and I do a pack change and I have to run back out and powercycle it. If any Devs are reading this my advice is check if the incoming buffer can get an invalid byte in it that then doesn't get cleared because a buffer overrun occurs.

[@dimgalan1424]

same here! R Same here! Random and rare Rpmfilter flags and I think it's a bug!

[@stone_fpv2599]

Check for water. I landed in wet grass and I couldn’t Arm after plugging in a new battery. Gyro not found. I disassembled the drone and let the fc dry. Put it back together and everything worked perfectly again.

[@kevincarbajal1220]

A lot of people need to see this video

[@terminsane]

My Foxeer Reaper stack was giving me this error after a bump. The connector between the ESC > FC was loose. I put a dab of threadlocker on the edge of the connector... hopefully that keeps it plugged in from now on. Surprised it didn't slip loose during regular flight tbh

[@airtechfpv]

It literally happened to me 3 days ago. And I powered down my quad and powered it back up and it went away

[@MrVIDEOACE]

Just flew a few packs and suddenly my quad decided to fall out of the sky. getting the rpm filtering flag even with diffrent (working) esc's. already reseted the whole config of my quad. Is it possible that my FC is toasted?

[@changeagent228]

What I find annoying is sometimes when using GPS rescue the quad won't arm even with enough sats. I know sometimes there are still not enough good signaled sats and it will show more but less than are shown are usable to satisfy the min sats variable but there is another scenario where no matter how long you leave it it will just not arm. If you power cycle it immediately reconnects and arms. Now if it takes more than a few minutes I always power cycle.

[@RubyS.1]

It's something with the sanity checks read about it first but if you set sanity checks to failsafe only that won't happen not saying you should just that there's a weird issue. I have mine set to failsafe only

[@changeagent228]

@@RubyS.1 That option is about disarming during rescue. It turns Sanity Checks off when Rescue mode is activated by a switch but only turns it on when it’s in failsafe. No worries though I'm going to open a ticket on Github anyhow. 👍

[@mschaffer2826]

Thank you for this video. I reflashed my escs to 16.7 and had to get a blhelim to get back to 16.9.

[@DominionDroneDaily]

Hey fpvgod, I'm curious to why this suddenly started happening after a crash? Everything seems fine electrically. It was a arse end crash that ripped off my ufl-sma extender & antenna but it was all fine

[@markb9896]

So are you saying for the stock BLHeli S we can use version 16.71 or newer to enable rmp filtering or is that for the jazzmaverick firmware and if it is for stock BLHeli S is there a reason you recommend jesc over stock BLHeli S? Thanks for the info

[@JoshuaBardwell]

It turns out that blheli_s 16.71 is jazzmaverick, just "official" and easy to flash using existing tools. But jazzmaverick has done some screwy things with the firmware that in my opinion have the potential to compromise reliability and performance. Version 16.71 is (I think) safe to use, but overall I feel more confident recommending JESC, which has been reliably-reliable.

[@markb9896]

@@JoshuaBardwell thank you I did not know that. Thus far all my BLHeli S are on jesc but I was interested in the 16.71 mention you made as I was again unaware of the connection to jazzmaveric and BLHeli S.

[@BruceLuckcuck]

@@JoshuaBardwell The *ONLY* recommended BLHeli_S version is 16.73. 16.71 had timing bugs and the code was pulled from the official BLHeli_S repo.

[@awesomesauce1214]

Hey this was the issue I was commenting about. Took a minute to search through your videos. But umm I don’t have the dshot option thing in my configuration tab. What do I do to fix it

[@JoshuaBardwell]

It's now in the Motors tab.

[@awesomesauce1214]

I turned it off and my drone still won’t arm 😂 I just want to flyyy

[@zolex5370]

just built an 3s whoop with jhemcu f411 aio (pre flashed with bluejay) in a TinyGo frame.. first arm: 🐝🐝🐝🐝🐝 second arm: rpmfilter power cycle and another try: 🐝🐝🐝🐝🐝 like you said, i think i gonna have to dis and reconnect the battery every now and then and live with it xD lets hope the maiden flight goes well :D

[@BikeGuyFPV]

It can happen if one or more ESCs has an RPM filtering error above 1% error. More common on F3 based ESCs and in use with certian FCs.

[@mcferran6720]

I totally agree I have 4 quads and it only happens to me in one that I have the ESC 4 in 1 holybro Tekko 32 metal 65A, you just have to remove the battery and wait a few seconds and reconnect and everything works again.

[@BruceLuckcuck]

@@mcferran6720 See my comment about F3 BLHeli32 ESCs. You need to update to the BLHeli32 32.7.2 test firmware to prevent the intermittent RPMFILTER warnings.

[@BruceLuckcuck]

The error % has nothing to do with the RPMFILTER arming disabled flag (unless the error is 100%). The arming disabled flag is cleared if the ESC receives *any* responses from the ESC and has nothing to do with the overall quality of the replies.

[@sinankeskin3398]

My drone sees my 4 s battery 2s I checked my battery is okay can you give me an advice thanks

[@publicname515]

I have this issue on a brand new quad Iflight chimera 5. It has an integrated FC and ESC. Not sure why when I flashed it now I can’t arm it anymore because of rpm filter…. I restored the original diff

[@andrewlittleton2209]

NM you just answered my question 😁 should have watched the whole thing before I spoke

[@kdawgstoner6145]

Always doing work..and yes very good on new fc's and higher bheli..but yes need to buy in to get it on the beheli 30a..wish i had it..but other than that..my heavy 5"build flys like a bird/hawk...but u need a higher amp esc for a heavy build and thats the only breaker for my build..heavy but it works faster

[@sugasheeze]

I have the issue mentioned where I will get RPMFILTER error but can just power cycle it and it will go away (usually). Happens about 20% of the time I plug a battery in. I was hoping this vid would help me diagnose and fix it, but then when you're solution to random RPMFILTER errors was the just power cycle it I realized that wasn't happening lmao.

[@BruceLuckcuck]

Read my comment about the cause of intermittent RPMFILTER warnings.

[@sugasheeze]

@@BruceLuckcuck You're right, my quad with issues has F3 ESC processors and BLHeli32.

[@rubenvaneupen7327]

My quad only shows this error only 1/10 arms... usually after a minor crash. Weird stuff. But then 10 seconds later it works. But this keeps repeating so... faulty stack?

[@damianozentile7014]

My quad after a crash does not rearm and rpm filter flag appears, I checked the wires between esc and fc but they seem alright.

[@SantiagoVelezRestrepo]

Joshua, but why when a i was in Beta 4.3 bidirectional dshot works normally, but when i came back to 4.2.9, (because crossfire failsafe), bidirectional dshot doesn´t arm the quad :( Cheers!!

[@crank_FPV]

For whatever reason I cannot connect my BLITZ Mini E55 4-IN-1 2-6S 55A ESC in configurator via my Mac. I tried the battery thing (as I’m newer to the hobby). This is a brand new bnf Nazgûl from iflight direct. Any suggestions guys? Thanks!!! I’ll try the power cycle thing s couple more times too for the heck of it

[@PedroTome75]

This made me scratch my head a little bit and then i power cycle the quad.,......all good.betaflight 4.2

[@crackafpv]

Love your outro Bro. ❤️🙌🙏😉 When you coming back to FL to Rip? 🤘😁👊

[@DaveyFPV]

Thank you again Joshua Bardwell. I didn't have this issue, but I now know why I can't get bidirectional dshot to work. I'm guessing that for it, the ESC needs telemetry? I have also lost the ability to get any response from Ghost in the reciever tab. I went through the troubleshooting for it on immersionrc's website, and it still doesn't work. The receiver is showing bound and I have telemetry working with the nano tramp; I've been able to change the video channel. I've tried both tx and rx on multiple uarts, and checked continuity between the ends of each wire. I've checked the reciever proticol is all correct, and I am using Kakute F7 aio v1.5 on betaflight 4.1. Do you have any ideas on how I can fix it? Thanks again.

[@JoshuaBardwell]

The ESC does not need telemetry. It needs blheli32 version 32.7 or for BLHeli_S it needs JESC.

[@JoshuaBardwell]

For Ghost, the setup depends on the output protocol that you've selected. Email me and I will work through it with you.

[@DaveyFPV]

@@JoshuaBardwell Thank you again for your help, I've just gotten the recent OpenTX release which supports GHST which may help. I just can't find it in betaflight. I'll email you for help if I can't find it in an update or it still isn't working. The battery voltage seems messed up in the latest opentx build though. It went from 7.0 to 7.9. Do you have a video on flashing escs?

[@JoshuaBardwell]

Ghost is not in betaflight yet. You use SRXL2 or SBUS. Have you seen this: kzbin.info/www/bejne/kGjZgIGNl6aSea8&ab_channel=JoshuaBardwell

[@DaveyFPV]

@@JoshuaBardwell Yes, I have. Someone was telling me that I didn't know how to set it up right and that GHST is suppoorted in the latest opentx build so I should use that. There's so much misinformation these days, at least there's your KZbin channel to put things right.

[@PkwyDrive13]

Babyhawk 2 HD, just updated from 4.3 RC2 to RC3...now rpmfilter doesn't work, I get errors. Worked perfectly before, I use Bluejay and blheli_M and doesn't work. Randomly broken now

[@Harald787]

I have one quad with an Airbot Furling32 Airport F3 ESC and it is giving me randomly the RPM filter flag. A reboot always solves the issue. It happens since I have build the Quad a year ago. Very annoying. Several BF and Blheli-32 updates did not solve the issue. Once armed after a reboot the Quad flies without any issues.

[@BruceLuckcuck]

See my comment about BLHeli32 ESCs. You need to use the new 32.7.2 firmware version.

[@Harald787]

@@BruceLuckcuck I am on the latest version

[@ghostyFPV]

Quad worked last time I flew it, took a few days off and was getting RPM filter flag. All I did was reseat the connections to the flight controller and everything was fine 🤷‍♂️

[@adamrobertson7215]

I just had a totally uneventful flight and after I landed and decided to see how much actual battery I had left, I got RPMFILTER and couldn't re-arm. I didn't try power-cycling, but this makes me a bit nervous in case I need to accidentally re-arm in flight... BiDi DSHOT is brand new to me, this is the first flight after enabling it. Aside from the beacon tones being a different (higher) pitch, I haven't noticed other side-effects, but I'm hoping I don't have to turn this back off for reliability reasons. Anyone else encountered this?

[@Jono-le9xz]

Me too, i just got this issue a few days ago (till now). The only changes to my quad is BF firwmare update on fc and change tone in blue jay of my motor. Thats all. So everytime i have to powercyling if i wanna re-arm.

[@maxdoesfpv]

@@Jono-le9xz but how do we fix it

[@toilaxuannam]

Appreciate this!

[@WillyFPV]

Thanks JB

[@MrCrazyhack3r]

When my drone is not plugged in to betaflight it shows the osd, when i unplug , the osd goes away and all i see is the air unit in low power state, cant get it to arm, when i plug the drone in my tbs tango says telemetry recoved and the osd comes back, what could the issue be ?

[@JoshuaBardwell]

The FC 5v regulator is dead so the FC only powers up when you plug in USB. Usually the response is to replace the FC.

[@MrCrazyhack3r]

@@JoshuaBardwelli have a iflight nazgul f6 with a BLITZ Mini F722 Flight Controller, do i need to replace entire fc ?

[@MrCrazyhack3r]

@@JoshuaBardwelli flew through drone, came in for a landing and it was roungh i must admit, disarmed approximately 4 feet of the ground, after that when i try to fly no osd, only shows the air unit in low power state at the bottom, when i plug the drone into betaflight the osd shows, in betaflight i see the arming flags shows rpm filter , even after disabling rpm filter still cant arm or shows any osd

[@JoshuaBardwell]

RPMFILTER means the FC is not talking to the ESC. Again, I think your FC died in the crash. I would replace the FC.

[@WavyHertZFPV]

Good to know thanks !

[@Halphbaked210]

mobula 6 .......mine was from not having a battery plugged during setting changes in bf

[@reecegifted2386]

I don’t need bi directional dshot?

[@dantegeraldino7938]

Thank you soo much!! It works!!

[@supfly51]

My ESC doesn't boot up or arm unless i turn off Dshot600

[@Enderkruemel]

I never Got this flag But now i get it every time. If i arm the flag is there i disarm and arm again it went away. Also a Single Motor is beeps later... I dont know What this is. It was working since i updatet to bf4.2 But now its getting the flag every time...

[@JoshuaBardwell]

Did the instructions in the video help?

[@Enderkruemel]

@@JoshuaBardwell Not realy, i used to have custom Music on the Escs. I reset my Esc and restore the settings, But this didnt help much. Now the flag comes Not every time,But sometimes it came and sometimes Not. I dont know if the Musik makes a Problem But it should Not.

[@Enderkruemel]

@@JoshuaBardwell i just found it, a semi loose wire connection from the Esc to the FC. In flight the Vibrations helpt to get a Good enough contact. It always had connection, But sometimes a realy high resistance. ->the Escs did work in the Motors tab,also in flight. Only on arm (whithout any Vibrations it didnt arm) Also the flightcontroller didnt have any brakeout pads for testing or replacing the plug whith wires, But i did desolder the plug on Esc and the FC and soldered them direktly togeter. Now it works fine, whithout any Problems. My friend had the idea that the wire is Broken or something like this, than after 1h we finaly found it.

[@noisy_boi_fpv_3920]

Next time it happens just move throttle stick to max wait untill visual beeper shows is osd then lower throttle. Then arm.

[@dbcooperfpv9883]

Here ya go - running RPM filtering, no issues - tons of packs, etc. now armed - 1 motor stalls on take off😮 power cycle, arms, only 3 motors spin 😒repeat, same story 😒 next day troubleshooting - now, no motors spin, but I have the RPM flag (now you know how I got here) - plug in Betaflight, motors tab, hit the master, ALL motors spin, tach data all good, now flight test, it rips. WTF? 🙄🤷‍♂ whatever, send it...

[@PMcDFPV]

As I watch this sitting in a parking lot, just crashed my tiny whoop, and now I'm getting RPM filter on arm, I'm thinking I damaged something :-( thank you for the info good sir

[@Dienex]

my quad will arm, let me fly but if i disarm then try to rearm, it wont let me and shows rpmfiltering in osd... if i power cycle it repeats the same process everytime, any ideas? my esc is a 4in1 with bluejay 0.19.2 and im running BF 4.4

[@JoshuaBardwell]

This is a known bug with some ESC's. Try rolling back to an earlier version of bluejay.

[@Dienex]

@@JoshuaBardwell thanks I will try this. I did update to BF 4.4.2 before this started as well so I will roll back both separately and see if either fixes it

[@JoshuaBardwell]

BF 4.x is not the issue. It's the ESC. Roll back Bluejay in my opinion.

[@Dienex]

@@JoshuaBardwell I rolled back to 18.1 and still the same issue

[@Dienex]

@@JoshuaBardwell im thinking a MOSFET might be damaged or I did something wrong upgrading BF 4.4 (flashed firmware then loaded my config backup via preset tab)

[@gozillasin9934]

Great explanation.This is the JB youtube! :)

[@andrewlittleton2209]

I get an RPM filter flag but it still arms what does this mean? I’ve actually never not had that flag but it always works. Lol I said never not...

[@noisy_boi_fpv_3920]

Next time you get rpm warning raise throttle stick wait till osd visual beeper shows then lower throttle should arm after that. 👍👍👍

[@likwidkool]

Shoot this exact situation happened to me last week. Wish I found this video then! lol. Somehow I figured it out on my own.

[@steady747]

I'm getting an RPM filter flag and my rig wont arm, well it arms, it has yaw, roll, pitch, but no throttle.

[@JoshuaBardwell]

With RPM filter flag the motors will not spin the quad will not arm. So something doesn't add up here. I guess you saw RPM filter flag then it went away when you plugged in the battery and the ESC powered up. The situation you describe is like you had turtle mode activated. In that case the sticks would spin just 2 motors but the throttle wouldn't work.

[@steady747]

@@JoshuaBardwell you are correct, with that flag it won’t do anything. I turned off bi lateral and that’s when I have the issue with the throttle

[@clenchedfury6019]

Thanks

[@sleepyheadfpv1507]

Lmao this video was because of me lol

[@userunknown2771]

I fixed it by flashing All telemetry in JESC Configurator. I had just Flashed them all, but did not "Flash Telemetry" Stupid mistakes happen

[@Martin-pu1ti]

👍 good tutorial...cute baby 👶

[@mauritz1774]

Is is possible to configure my Quad with: -Arming in the Hand -Gyro Off -and adjust the Throttle to50% And youse my Quad to Fire on my Carcoal Grill as Grill fan? Dont worry with the Heat, i will Not grill the Quad selv Grüße aus Deutschland bist der Beste

[@BikeGuyFPV]

set pid_at_min_throttle = off kzbin.info/www/bejne/rpqrYXSFqNVgnbs This is a video explaining how to set it up correctly. Similar to how the idle up function works on KISS and how Mr. Steele has always done his quads, just this is the BF way of doing it. You won't need to increase motor speed. Idle will be plenty enough to get a fire going.

[@BruceLuckcuck]

​@@BikeGuyFPV DON'T DO THIS!!! NEVER ENCOURAGE PEOPLE TO ARM THE QUAD AND HOLD IT IN THEIR HAND! The settings you suggested only affect how it behaves at minimum throttle. Accidentally bump the throttle even a little and the PID controller will be active and likely flip out and eat your face!. DON'T DO THIS!

[@BruceLuckcuck]

No, it is not possible to safely do this in Betaflight. Ignore instructions about how "Mr Steele does it" as they don't apply to Betaflight (he flies KISS).

[@ontariodoublex2713]

Randomly I’ll crash and go to arm and it’ll say rpmfilter anyone know why?😊

[@takov_david]

Rebuilt my quad, and now it won't arm bc this bs

[@ivan_usenko]

Спасибо :)

[@rocketronfpv5654]

Thank you😀👊

[@flowrfpv]

Short answer : Your ESC firmware probably doesn't support bidirectinal DSHOT.

[@Jono-le9xz]

Not for me.

[@fredled9486]

cool

[@pacificnorthwestpilots6050]

I am view #420....dope.

[@waldoh414]

E M U

[@BruceLuckcuck]

Which doesn't support RPM filtering - so thanks for the useless comment.

[@waldoh414]

Bruce Luckcuck that was the point 😹 thanks for your useless comment.

[@kduemose]

💪🤓

[@Oxizee]

getting a dejavu..../hiding

[@gabrielnunes159]

You said in another video that Bluejay has bidirectional Dshot and that BHeli_S does not have. And now you are saying the opposite? kzbin.info/www/bejne/r3anmaF4iquEhKs

[@eduardkhilenthusiast]

first :^)

[@johnwalter6410]

My D shot and rpm filter ios on and its still flagging.