• Welcome to RCCrawler Forums.

    It looks like you're enjoying RCCrawler's Forums but haven't created an account yet. Why not take a minute to register for your own free account now? As a member you get free access to all of our forums and posts plus the ability to post your own messages, communicate directly with other members, and much more. Register now!

    Already a member? Login at the top of this page to stop seeing this message.

GT3B Hack Question and Answer Thread

The hacked software can be set to do a 3 position switch. No need to physically change it

Sent from my Nexus 6P using Tapatalk
 
Ahh, yes. Thought you already had it hacked. That's what this thread is about. It's definitely well worth it. If you're unfamiliar do some reading here.

Sent from my Nexus 6P using Tapatalk
 
spoo76 said:
I've definitely seen a post about it somewhere, though I don't remember where. I bet a Google search with the model # and antenna as the key word might help. I can't seem to remember a definite answer, but I believe it wasn't much of an issue at first, then they put it back because of range issues. I doubt it would be an issue for a crawler if that's the case. Considering how cheap and plentiful the receivers are give it a shot and see if it works for you.

Sent from my Nexus 6P using Tapatalk
Click to expand...

Yea I did couple searches...... Just typical jibber jabber....... I'm not worried about the money as always, just figure here was more straight than anywhere else to ask before I go chugging around with it. Figured it was some bs for range and not needed for short distance.

Could loose a bit more weight and space on my rigm. Lmmfao
 
Hello everyone, I just got my GT3B about a week ago and already put the hacked firmware on it.

I'm having some issues though setting up channel 3 button for a cheap kill switch. does anyone have any idea the proper setting for it?

Please let me know if you need more information.

Thanks for the help.
 
Is there a way to calibrate channel 3? The reason I ask is I just set up channel three to work as 3 way switch to control a servo winch. I can get the servo to turn in one direction but to get it to stop I have to move the ch3 trim button so it reads -100. At ch3 trim 0 and +100 the servo is still spinning instead of stoping on 0 and changing direction at 100. I've tried to adjusting the trim separatly to -99 and +99 that seems to do nothing except then it never stops. I tried re-calibrating the radio and there is a ch3 calibration and resting it reads over 1000 and if I move the trim switch back it goes to 0. I just can't figure out how to save the calibration settings.

Sent from my SM-G900V using Tapatalk
 
Chris81 said:
Is there a way to calibrate channel 3? The reason I ask is I just set up channel three to work as 3 way switch to control a servo winch. I can get the servo to turn in one direction but to get it to stop I have to move the ch3 trim button so it reads -100. At ch3 trim 0 and +100 the servo is still spinning instead of stoping on 0 and changing direction at 100. I've tried to adjusting the trim separatly to -99 and +99 that seems to do nothing except then it never stops. I tried re-calibrating the radio and there is a ch3 calibration and resting it reads over 1000 and if I move the trim switch back it goes to 0. I just can't figure out how to save the calibration settings.

Sent from my SM-G900V using Tapatalk
Click to expand...
Figured it out...it was the potentiometer in my servo...

Sent from my SM-G900V using Tapatalk
 
cwisenbaker said:
Hello everyone, I just got my GT3B about a week ago and already put the hacked firmware on it.

I'm having some issues though setting up channel 3 button for a cheap kill switch. does anyone have any idea the proper setting for it?

Please let me know if you need more information.

Thanks for the help.
Click to expand...


Totally need more info.........
 
spoo76 said:
You need a 3chanel RX minimum, but the 6ch will work and have extra channels

It can be setup to switch modes more than one way, they all seem easy to me

Compatible RXs are listed on page 1. They are branded as HobbyKing, FlySky, Turnigy, and a few others. The axial AR-3 is also compatible.

Also is FLYsky Frysky is something else and I don't believe it's compatible

The GT3c is the newer version of the GT3B, they perform the same functions however the GT3C has a lipo from the factory as well as I believe the upgraded voltage regulator. Some say the GT3C has better ergonomics



Sent from my Nexus 6P using Tapatalk
Click to expand...

Forgot eurgel or whatever. Lol

No vr since the 3c is 1s Lipo....... Also has bearing mod and back strap changes to change grip size. And screen is flipped
 
Seriously brilliant! I just flashed THREE brand new GT3C radios. There is something quite satisfying about opening up, soldering, and flashing stuff before even using the thing (or even putting the battery in for that matter). I then immediately configured 4ws on a little 3ch RX, and it ROCKS!

Who do I owe lunch to? This is really well done. I'm a UX zealot, and the menu nav is horribly cryptic and useless without the manual, but... that's just a limitation inherited from FlySky, not from firmware modders. Also, I've done many, many flashing of Atmel microprocessors from Arduino to Netduino, ESP8266 and more. But I gotta say, as a first time STEM experience, this was the easiest one-step process I've ever seen.

So... I got to thinking, there should be a desktop app for configuring this radio and updating user settings. Not only a great way to tweak, test, and save things yourself, but a way we could all share our favorite config/mix settings with others in the community. But that requires two things:

  1. Is it possible to read/write data to the eeprom from the SWIM/STEM interface? (or DSC port?)
  2. What is the data format we can emulate and create on the PC to send to the GT3B/C?

If #1 is not possible, this idea is dead in the water anyway. Sure would be cool though. Who would have knowledge on this topic that I can reach out to? I'd build the desktop app if data sync is even doable here.
 
I bought a GT3b a while ago after reading all about the hacking ability. I'm hopeless and can't just leave things alone. This forum has been invaluable! I've upgraded the battery to lipo, done the voltage regulator upgrade and finally the firmware upgrade. It wasn't so simple for me. I ended up having to reformat and old XP netbook I had laying around, as my Windows 10 desktop wouldn't play along. Anyhow, I primarily bought this for my brushless truggy in the hope to be able to control the power delivery, as it just flips on anything more than 1/4 throttle on take off and even at top speed it likes to flip when I try and feed on any more than 3/4 throttle. I hit a rock on the beach with this truggy and am out of action for a while, so unable to do what I initially intended.

However, I have a 1/8 nitro truggy that I have been running this tx with since I bought it and it has been great. But now that I have upgraded the firmware, my servos have become really twitchy. Especially the throttle. I never experienced these problems before the upgrade. Has anyone else experienced this? Also, I am having a problem that I've seen some others have in the end point adjustment of the steering. I can adjust the right turn adjustment normally, but when I turn the wheel to the left, it doesn't allow me to adjust left turn end point. I discovered that by pulling the trigger allows me to adjust the left turn end point. Strange, I know, but is there a fix for this?
 
You must log in or register to reply here.

Similar threads

Greatscott
Flysky - Fail
Replies
10
Views
1K
TacoCrawler
T
jebster
Jebster's XX10 T-REX
Replies
8
Views
1K
jebster
jebster
JatoTheRipper
Vanquish VRD Stance RTR
2
Replies
33
Views
7K
Col_Sanders
Col_Sanders
G
Flysky Noble transmitter questions - trim switch operation
Replies
0
Views
1K
garyk
G
S
4WS with Spektrum DX5C frustrations
Replies
10
Views
3K
SMT_Digger
S
Back
Top