2LikesFLYSKY GT3b Transmitter
04-16-2021 | 06:42 PM
#4876
Tech Adept
Joined: Feb 2021
Posts: 168
Hey guys, quick repair instructions below to help others who might have a broken steering spring.
The original one on mine broke perhaps 4 times now, and each time you bend the loop back to reconnect it, it makes it even stiffer and likely to fail from fatigue.
I discovered that the futaba heavy-duty springs below are a perfect fit, and likely higher quality.
And if you order them directly from futaba, shipping was only $1 within the US.
Cheers
The original one on mine broke perhaps 4 times now, and each time you bend the loop back to reconnect it, it makes it even stiffer and likely to fail from fatigue.
I discovered that the futaba heavy-duty springs below are a perfect fit, and likely higher quality.
And if you order them directly from futaba, shipping was only $1 within the US.
Cheers
04-21-2021 | 02:14 PM
#4877
Tech Adept
Joined: Feb 2021
Posts: 168
Has anyone else noticed that Flysky has an updated version of the GT3 with the next-gen protocol?
https://www.flysky-cn.com/it3c-description
I'm wondering if it'll be a similarly great value as the GT3, but with better latency which was the only thing holding it back.
I haven't been able to find it for sale anywhere though.
https://www.flysky-cn.com/it3c-description
I'm wondering if it'll be a similarly great value as the GT3, but with better latency which was the only thing holding it back.
I haven't been able to find it for sale anywhere though.
04-25-2022 | 07:56 AM
#4879
Tech Rookie
Joined: Apr 2022
Posts: 1
I'm looking for this info too. I got some results by not removing the resistor and just 'replacing' the switch with a 10k log potentiometer, but it's not 1k at half turn like the manual says. one side of the original button wired to the center potentiometer post, and one side to one of the outer post. I get a lot more movement on one end of the pot than the other, although I still get a full range.
I'm going try bypassing the resistor and using a linear pot, once I get them, on another hacked radio to compare. but I have no idea what I'm doing.
through my meddling, I believe r18 is the correct one to bypass as well. Im using a gt3c. my board says rev:1.6. I'm on 0.6.2 firmware.
Stuff to double check. If I switch from CH3 button to CH3 pot, it will default to throttle trim. Calibrate Ch3 in the calibration menu (Hold full right steering + hold enter). You are only calibrating full left and right for CH3. if you have it wired up right, you'll see the number change when you turn it. Check end points on the desired channel.
I'm going try bypassing the resistor and using a linear pot, once I get them, on another hacked radio to compare. but I have no idea what I'm doing.
through my meddling, I believe r18 is the correct one to bypass as well. Im using a gt3c. my board says rev:1.6. I'm on 0.6.2 firmware.
Stuff to double check. If I switch from CH3 button to CH3 pot, it will default to throttle trim. Calibrate Ch3 in the calibration menu (Hold full right steering + hold enter). You are only calibrating full left and right for CH3. if you have it wired up right, you'll see the number change when you turn it. Check end points on the desired channel.
I was wondering if there was any information anyone could provide me with regarding the swap on the ch3 button to a potentiometer on the GT3C. I just can't figure it out, and I can't find any information online about it, unless I have missed it sifting through 4 or 5 hundred pages on forums in the last couple hours.
I have the radio updated to 0.6.1 firmware, I have it set to use ch3 as pot in the global config, and I have ch3 set as ch3 on the radio to the receiver. Now, I just can't figure out the wiring. Nothing I do gets the pot working on channel 3,im checking through the calibration and using smartproproplus on the pc directly to the controller, and to the Arduino based receiver adapter I made.
Where do i hook up the wires of the pot on the controllers board? Which resistor do I eliminate? I'm assuming the resistor is labelled r18, as its the one that is inline with the ch3 button, according to my multimeter. Some help would be greatly appreciated. I need another real axis added to this controller for one of my rc projects. Thanks a bunch in advance.
I have the radio updated to 0.6.1 firmware, I have it set to use ch3 as pot in the global config, and I have ch3 set as ch3 on the radio to the receiver. Now, I just can't figure out the wiring. Nothing I do gets the pot working on channel 3,im checking through the calibration and using smartproproplus on the pc directly to the controller, and to the Arduino based receiver adapter I made.
Where do i hook up the wires of the pot on the controllers board? Which resistor do I eliminate? I'm assuming the resistor is labelled r18, as its the one that is inline with the ch3 button, according to my multimeter. Some help would be greatly appreciated. I need another real axis added to this controller for one of my rc projects. Thanks a bunch in advance.
11-27-2024 | 08:20 PM
#4880
Tech Rookie
Joined: Apr 2021
Posts: 4
I'm looking for this info too. I got some results by not removing the resistor and just 'replacing' the switch with a 10k log potentiometer, but it's not 1k at half turn like the manual says. one side of the original button wired to the center potentiometer post, and one side to one of the outer post. I get a lot more movement on one end of the pot than the other, although I still get a full range.
I'm going try bypassing the resistor and using a linear pot, once I get them, on another hacked radio to compare. but I have no idea what I'm doing.
through my meddling, I believe r18 is the correct one to bypass as well. Im using a gt3c. my board says rev:1.6. I'm on 0.6.2 firmware.
Stuff to double check. If I switch from CH3 button to CH3 pot, it will default to throttle trim. Calibrate Ch3 in the calibration menu (Hold full right steering + hold enter). You are only calibrating full left and right for CH3. if you have it wired up right, you'll see the number change when you turn it. Check end points on the desired channel.
I'm going try bypassing the resistor and using a linear pot, once I get them, on another hacked radio to compare. but I have no idea what I'm doing.
through my meddling, I believe r18 is the correct one to bypass as well. Im using a gt3c. my board says rev:1.6. I'm on 0.6.2 firmware.
Stuff to double check. If I switch from CH3 button to CH3 pot, it will default to throttle trim. Calibrate Ch3 in the calibration menu (Hold full right steering + hold enter). You are only calibrating full left and right for CH3. if you have it wired up right, you'll see the number change when you turn it. Check end points on the desired channel.
Yes, It's resistor R18 on both the GT3B and GT3C. You remove the resistor, and attach a wire to both spots where the resistor was attached, and attach another wire to ground. I used the ground pin where i attached the 4 pin header to update the firmware. You then wire the potentiometers ground to ground, and the other 2 wires to the other 2 pins of the potentiometer. I also clipped the wire going to the ch3 button on the longer plug that runs to the daughterboard that has the handles buttons on it. Not sure if it's necessary. Sorry it's been years since I came and updated this.
12-02-2024 | 11:04 AM
#4881
Tech Rookie
Joined: Apr 2021
Posts: 4
Also, i did have a question regarding some parts of the menu. When you assign a key as BRK, what does this do? does it just disable reverse on the trigger temporarily when its activated and then use reverse on the trigger to what you set in the mix menu for the brake channel, and then make the trigger go back to reverse if it's off?
I'm working on a conversion, and it has a disk brake on the rear axle. i don't want to use motor braking, because it's a chain drive. I doubt i'll get a response to this though.
I'm working on a conversion, and it has a disk brake on the rear axle. i don't want to use motor braking, because it's a chain drive. I doubt i'll get a response to this though.
04-22-2025 | 09:48 PM
#4882
Tech Rookie
Joined: Apr 2025
Posts: 1
I had bought a new GT-3b transmitter, now it has board version 3.6, PSX custom firmware won't even bind. PSX, are you still reachable somewhere? Does somebody got schematic, or transmitter module type or original firmware source code?
06-07-2026 | 07:35 AM
#4883
Tech Rookie
Joined: Jun 2026
Posts: 1
hi ive got the same problem on one of my later gt3b,gt3c and earlier gt3b are fine,when you do a button check its like the bind button has been deleted. I flashed mine with psx and an STLink V2 lost bind function on later version,reflashed with original firmware and still no bind!!!! now have one of my later gt3b dead in the water literally as its for one of my boats. Anybody out there got a patch for this problem.
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