Radiomaster Nexus • RotorFlight Arming and Throttle Cut on a Single Switch

[@Drd4all]

Nice and simple. All this video series has been amazingly helpfully. Subscribed 😱

[@RCVideoReviews]

Welcome to the channel.

[@nfavor]

Such an elegant solution!

[@RCVideoReviews]

I'll post the configuration in my discord in the #rotorflight channel.

[@Glamis56]

Simply Awsome, as are all of your videos!

[@RCVideoReviews]

Wow, thanks!

[@124MPH]

Well Done 👏👏👏👏👏

[@RCVideoReviews]

Thank you! 😃

[@JustPlaneChris]

It's an elegant solution, but having the separate switches is actually a good safety feature! Having a heli jump alive with a single switch command can make for a very bad day if you bump the radio or knock it over and flip that switch. (Voice of experience here...)

[@RCVideoReviews]

Every other fbl I have uses single switch arming. I don’t subscribe to the what if I bump a switch school of thought. In RC there are all kinds of switches that can cause bad things to happen if used by mistake. For example do you have two stage disarm? What happens if you’re flying and you accidentally disarm the fbl? Could you turn the motor off re arm, and then get the motor on again before it crashes? At the end of the day, your money, your hobby. Do your thing.

[@JustPlaneChris]

@@RCVideoReviews For sure, there are gotcha's to having a separate arm / safety switch. I guess I'm a bit paranoid after an accidental arm situation myself, plus a friend who ended up with 50 stiches from a plane runaway after his radio fell over and armed / went full throttle. Everyone has to do their own risk assessment and act accordingly. Heck, I know there are guys in my club who don't even have an arm switch at all for their planes! Bump the throttle stick and there she goes.

[@RCVideoReviews]

Exactly. That's why I say your money, your hobby. You have to do what makes sense for you. I'm just showing options.

[@JustPlaneChris]

@@RCVideoReviews your comment about possibly disarming RF in flight prompted me to do some logic switch action on my setup so I can only disarm if the motor switch is in the OFF position. Now I still have the two step arming I’m comfortable with, but can’t accidentally disarm in flight! Thanks for the thoughtful discussion on this topic. 👍

[@simonsutherland814]

Great information thank you. I fly two very old FB helis 11.1v 3 cell batteries with a TX16s is there a receiver that will give me battery telemetry easily. I currently use a radiomaster R86C Cheers

[@RCVideoReviews]

This is one of the main reasons I use ExpressLRS--all of the current receivers have a vbat pad so I get battery telemetry without any external hardware. One wire to the balance plug when I connect my battery and I have voltage on everything I fly. Sounds like your radio has a 4in1 (R86C is not ELRS). You can add an ELRS ranger module to the TX16s easily though.

[@simonsutherland814]

@@RCVideoReviews thank you, thats a great idea. Love your vids stacked with fantastic info - legend

[@namashabori]

Is it worth putting a second special function so that if the arming switch is moved to off (and throttle hold/auto rotation switch is still active) , it will then override throttle to -100%. I noted if RF is disarmed throttle stays at autoration setting 13.3%....or does the motor cut when RF disarm is activated? sorry new to all things edgetx/rotorflight

[@RCVideoReviews]

That's up to you and a personal choice.

[@RCVideoReviews]

If you disarm rotorflight, the motor is cut.

[@philkaighin3582]

Yeah ok. This is supposed to be a safety feature (and it works great). Sure you can do whatever you like with your own stuff but it would have been nice for you to explain what "Arming" is all about, and that we don't recommend that it's bypassed as you have done. Instead you have just given it a "hold my beer". You have not discussed any of the drawbacks or limitations in doing this. When the heli is not armed it is not in a state designed to fly. Lots of stuff in the FC is disabled and it is not controlling in the same manner as if it is armed. I-term decay is active, precomps are disabled, initialisation checks and the governor will have to start from zero. The next version of Rotorflight also has a swash wiggle which indicates when arming is successful.... Considering all that an accidental throttle hold/disarm in the air will almost certainly result in a crash. On the other hand accidentally hitting just throttle hold only will just put the governor into 'lost throttle' and if returned it will immediately go back to 'governor recovery' and continue. Having a single easy to access switch means at some time you will hit it by mistake. It is not simply a 1V2 switch issue. Arming should be put on a hard to reach/activate switch (so you don't disarm in the air). Throttle hold on the other hand should be easy to get to position. It's a people before equipment issue. Unfortunately I have personally had to bandage a badly injured fellow flyer due to an accidental full throttle on the bench in the pits. Large cuts down their arm trying to grab it, then all down their leg when it fell off the bench. The Arm feature would have prevented that incident. Yes it's different to other systems.

[@RCVideoReviews]

There are no drawbacks IMHO. I don't subscribe to the school of thought: "Let's not accidentally touch stuff on the radio" If you're flying one of these machines you better know what your switches do and how to fly it. Literally ever single other thing I fly is armed with one switch including: - OMPM1/M2 BNF models. - iKon - Spirit - Microbeast - Betaflight So I completely disagree with your entire comment. Why do I need babysitting for RF FBLs all of the sudden? Personally I'm sick and tired of being protected from myself by programming. You can recommend whatever you want. I really don't care. I'm showing options for people coming from other platforms (everybody) who are more familiar and more comfortable with single switch arming.