Bad idea... Flysky GT2B mod with Hall Sensor Trigger

BEWARE. PROBABLY DANGEROUS. PROBABLY DUMB.

Hey kids.

On the remote Saga again.

I am hung up on the idea that potentiometers are an early failure point on remotes.

I am not smart enough to know this for a fact.

But Hall Sensors are touted as an upgrade on these remotes.

Puck 2.0

Flipsky VX4 Pro

Radiomaster MT12.

So I think hall sensors are cool.

I have recently tried a GT2B and I like it

I think the Radio is ok.

But the trigger uses a potentiometer.

I decided to get the Radiomaster trigger assembly with Hall sensors and see if that works on the GT2B.

And looks like it will.

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Trigger assembly is only 9.99 but ships from China and there was some shipping.

MT12 Surface Radio Trigger Assembly – RadioMaster RC.

I had to solder a wire extension with the correct connector for the GT2B.

But once I paired the remote with the receiver and set the fail safe for the GT2B it seemed to behave normally when setting up the PPM mapping on VESC tool.

I have not taken it on a ride yet. And it may be a while before I can.

But I am excited.

Next I have to break out the Dremel and hot glue to make this physically go into TItos shell. Since I can’t cad….

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@b264 what would you do to this to try to make it water proof?

Do I douse it on conformal coating?

Any suggestions on how to make it more robust?

Should I encase the whole thing in silicone?

I feel so sketchy about relying on these tiny wires to not shoot my board into traffic…

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Paging some folks I think use these remotes.

@Titoxd1000 @MoeStooge @fessyfoo

And @dimos15 …. I can’t afford the Radiomaster MT12, but at least got the trigger…

Little bearings are cool.

Looks like there is also a mechanism to adjust the spring tension.

not sure if you’ll want it or not but here is a file for a full finger loop you can print for the mt12 trigger.

MT12-Full-Trigger-V2 2.stl (62.7 KB)

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@rafaelinmissouri This is really playing with fire man. You don’t know what the voltage requirements for any of those parts are, and you are the first person to beta test it. It may work at full charge but then not work at mid or low remote charge.

I don’t know enough to tell you all the risks, but my understanding is that this is wildy unsafe. @DerelictRobot could say more

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It did seem too easy…

ralph-wiggum-the-simpsons

I love how I’m sitting here asking Gemini and it gives me slightly different answers…

Will AI help me from breaking myself.

With Gt2b the main problem we had was RF interference in congested RF areas. Esk8con at the track exit with multiple boards occupying a small area we would experience signal drops
Was testing the 9-channel receiver at the beginning of the MT-12 testing. Never got to test it congested for drops with the 9c receiver but it seemingly had better range than the 3 channel receiver.
Love the trigger and feel of the tito mod gt2b. It was nice.

Would like to someday hardwire the controller and eliminate using wireless connection.

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Bear with me.

Are you saying I can use this receiver with the GT2B and that could provide a better connection?

Can you pair 1 GT2B with several receivers?

from what I remember from the single FocBox days, I had a receiver per ESC. Derek had a 4WD where I think he used 4 receivers.

My GT2B batteries were starting to swell so I took them out. Haven’t gone looking for the smaller batteries yet, I need that one to fit my case.

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On the small wires I would use that adhesive lined shrink wrap. You can always make that if you don’t have it by snipping off tiny pieces of hot melt glue and shoving them inside the heatshrink tubing before you heat it. The trigger assembly is hard to say without looking at it in my hand. Some acrylic conformal coating on any non-moving pieces might definitely help. You don’t need thick coatings either. Unless there is a potentiometer in which case it’s almost impossible to waterproof. That being said, I have never once had a Mini fail in rain, even thunderstorms, for years. And they use cheap potentiometers so I don’t know.

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Gt2b You can bind multiple receivers to one transmitter.
The 9 channel receiver has a better range than the 3 channel.
Cant say how it is in RF congestion. There were other transmitter receiver combis having similar cut issues at esk8on 24 in RF congestion, even with channel jumping, tech signal interrupts were reported.

Moving to the MT-12 erls setup has been the best setup connection wise that i have experienced to date. It uses drone tech on a ground conroller. Pretty much removed the oh shit factor from the GT2B racing days. Mt-12 has throttle/brake curve and power/brake level programming. The trigger style and bulk for some people is a turn off.
For what we do, it works very well.

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MT12 trigger is really nice and there are insane amounts of features in the remote. Snag one @rafaelinmissouri ! Biggest drawback like @MoeStooge said is the size of the remote. I like the feel of the mt12 so much more than the mushiness of the zmote, but the size of the zmote is nice.

Still hoping someone re cases it someday or finds a way to run it without the screen plugged in or something.

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This is so cool! I wanna mod a remote now.

Rafael is experienced with runaway boards, perfect beta tester. Seriously, though… plz be careful. :slight_smile:

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does it work? does that hall sensor just act like a pot with those 3 wires? … that seems so unlikely..

The trigger is nice on the mt12

the main reason people tried it was for the signal reliablity due to lora radios and elrs protocol.

I keep thinking the right electronics project is to make a custom remote using the same radio. and possibly the whole EdgeTx env. (Edgetx is powerful but also overkill complicated tho)

doing a body mod on the mt12 could make it smaller. but.. not small. the circuit boards inside it aren’t small.

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The MT12 is also expensive…

They are so close with the Foil remote…

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