I got no soldering skills but it’s lockdown and I got all stuff needed in this vid so gonna give it a go cheers, I would never have done this without such an excellent breakdown.
Quick tip for a guy or gal them or they with no skills with soldering please go to Home Depot and buy some soldering paste . It comes in a little white plastic Syringe so you can only squeeze out what you want and you don’t need much it also contains flux . Soldering with it is simple just apply a small dab on area then heat with match or soldering iron till it bubbles and pops then stop heating it let it cool and enjoy strong instant solder joints with 100 % less hassle
The Vrm mod is well worth it. I found the part from my regular goto components supplier for $2 bucks, got 2 of them for $5. Took less than 10 minutes and mod done, and now my batteries last me weeeeeeeeks!!!
I have a few usb buck regulator boards laying around that will operate at 6v to 30v input. It seem like this would work better as a voltage regulator since they can provide at least 5w of power at a regulated 5v. They should operate at least 90% efficiency probably closer to 95%. It would also allow us to use 2S lipo. Could even be that the regulator shuts off below which would save an expensive lipo pack if the power was left on.
Great idea for a buck. Looking at the pins as shown in the video, left to right, this is Vin, GND, Vout yes? So I'd wire the Vin and GND to the (+) and (-) 'In' of the buck (12V in), and the Vout and GND to the (+) and (-) 'Out' of the buck (5V out)?
Did u use any old charger to charge? Or install a chip when you rigged those batterys together? Also you did them in series correct? Any tips? I use a thunder ac680 and it says it can charge Li-Ion so i want to go this route as well.
You could probably source those regulators from a local electronics store. Thanks for the video, I need to do this with mine, as well as the firmware update.
Awesome! I will go for TSR 0.5-2450 (input voltage at least 6.5V - you can take a normal 2S 7.4V LiPo...) because it's delivered from farnell and my electronics shop has a contract with them. It should work at least that good! I saw also the TR05S05 (min input voltage 7V!!), which should work too!
while the specs are sound, the unit itself will consistently be in alarm mode and beep continuously because it's alarm is set to around it just under 10 volts.
There are some tutorials on youtube... just search for gt3b hack! Maybe you can do a new tutorial about uploading the firmware to the transmitter to use 8 channels from it :D
Hello , good idea. I think that we can use a "step down module" , it cost 1$ or less. The way is to solder 3 wires in the place of the 7805 regulator. These wires allow the step down module to be placed where there is enough space for it (in the battery compartment for example). On ebay , schearch about "step down". Step down module do not works in linear mode , the efficiency will be better than using 7805. Bye.
or you can just do what I do and install 8 rechargeable AA and be done with it. my 10 second modification! haven't tried yet but by the looks of it you can charge these or lipo moded rite thru the radio itself. just picked mine up haven't even used it yet still waiting on the brushless upgrades.
I have a question, when you are calibrating your esc's, mainly hobbywing, what is the proper setting to start with before calibrating. Trim dual rate and expo, do you 0 everything. Hobbywing instructions are kind of confusing, they say if you have a futaba do this, and if you have a radio with a led screen do this etc. on your fly sky gt3b I'm talking about! Thank-you
Hi, looking through the comments and I'm keen to do the mod, but equally don't want to screw with it too much. Could you tell me what the numbers at the bottom of the component mean & whether that's important? Thanks
At 1:21 your caption says to use R-78E5.0-1.0. which is the 1 amp version of this switching module, why is this necessary over the 500ma version? I dont understand because the stock lm7805 being replaced is only rated for 500ma anyway and according to what I've read elsewhere the flysky radio only draws 140ma with the stock regulator and 90ma with R-785.0-0.5 www.rctech.net/forum/radio-electronics/394162-flysky-gt3b-transmitter-135.html
the 500mah model wouldnot work for me. so i upgraded to the 1 amp one and it works well. however in hindsight i should have verified if the unit was defective.
Hi theLEDwheel, nice video tutorial....Have a question, was trying to cut prongs from voltage regulator and one of the the 1st one broke off from the base of board, is there any way to remove LCD to get at the bottom of board to desolder prongs from underneath.thanks in advance....great videos..... :) I am using the R-78E5.0-0.5 this is the correct one for the fs-gt3b, right?
I used the Recom R-78E5.0-0.5 but the Recom R-78E5.0-1 works as well. Look up your local electronics supply stores. our check the Mouser website. Ebay has as well
I have a newer one but have not opened the box yet. However I have seen recent posts of people complaining about battery life so I presume it has not changed..... I guess you will find out with use as well.
New to this, had to open the radio due to something rattling, it's a black and white fuse cap of some sort, it seems to work fine without it, but what is it exactly and how important is it?
@@TheLEDwheel it's a black and white aluminum cap of some sort, has 20v printed on the side. But it's just a cap. It was rattling around and causing a short so I popped the radio open just enough to shake it out. Now everything is working fine . Just not sure the importance of the object.
How exactly does the voltage reg mod increase the battery life? I have looked at the comments and answers but I don't see this addressed. One more question. As clarification, is the 78E5.0-1-0 the correct part for this mod? Thanks.
The OEM Voltage regulator uses a lot of power to reduce the voltage to 5Volts. The replacement uses les than half the power to achieve the same goal. So you get less power consumption.
No I do not know how on the GT3C. I have never opened one up. However, the 7905 regulators are what is in GT3B units and they are the problem. I do not know what is in the GT3C.
hi sir good day . i have gt3b right now , plan to go the mod you have but what if the voltage regulator you use is not available? Is there any that I can use ?? Thank You
Steph, that looks like a great idea "on paper".... I'm curious, did you get the 50% more, or even close? It looks easy enough to do. I'm an old fart, like my handle (I'm at least 15 years older than you!). I got back into the Hobby after a long hiatus, since 1998. I originally started in 1985, shortly after Tamiya released the Frog!!! Well, like life, R/C was a LOT easier back then. THREE Brands, two channels, and it seemed like everyone had a Futaba or Airtronics Radio! May have been other brands, but I never saw any. Buggies looking realistic, until Losi came out with his first flat pan car....... then soon after, everything started to look like Moon Buggies with grossly oversized tires! 😕 But I REALLY digress! Radios today are COMPLICATED, but do a lot. A friend recommended a Flysky GT2B. Good choice but pleasantly misnamed, because it has 3 channels!! Never had to Bind a radio before, but it was much easier than I was taught! I STILL can't figure out how to make the 3rd channel turn my lights on and off. 😰😠 Still, I'm looking into a GT3B. I like the multi vehicle storage, and the many fine tuning options looks great! Only thing is - that one looks über confusing!!! I keep seeing videos about mods, upgrades, and HACKS. I'm used to a Radio that you turn on, and USE! Like, you can hack the processor with a USB jumper, and flash it with firmware that will give you 6.... or EIGHT channels out of that 3-channel Radio!??!? HOW do you even control them? Leaves me with more questions than answers. At least the trick you pointed out, is something that I know I can do. I'm good at hardwiring and soldering. And once again, I've written too much! Being retired and disabled is boring! 😜 I've written you before here, I just started a new account, exclusively for R/C. ~ Carmine
The GT2B is a much simpler radio system. As for the third channel to switch lights on and off you can view my video about turning an old servo into a LED controller or purchase yourself a servo switch. The GT3B and GT3C have the same display and menu system in a different package but the GT3C comes with a Lipo but I do not know if it better on power consumption. I still have 2 GT3B's but now I get the Radiolink sets. They are great on power and are even very versatile as to what you can power them with. it comes with a 4xAA battery retainer but it can be removed and powered by up to 3S. the receiver is also high voltage and can be powered directly from a 7.4 LiPo. This one here even has a built in Gyro asiate.es/aff?l=97259&i=35116 Or without the Gyro asiate.es/aff?l=97260&i=35116 And the receivers are only 10$ asiate.es/aff?l=97257&i=35116
I think there's something wrong with your gt3b for you having to recharge the battery every time you use it. My gt3b is stock and I get 12-15 uses out of Alkaline batteries.
You say at the beginning of the video that the image is wrong that we have to get the 5.0-1-0 model, yet the one you fit in the video is a 5.0-0-5 model as is in the picture. Is it SO important to get the 1A on? I'm asking because I can't find the 1A one anywhere, but the 0.5A one I can.
I did before I asked... no luck :( Is there an alternative regulator that can be used, eventhough it may be less efficient than the R-78E5.0-1.0? Or maybe adding a capacitor along with the 0.5 somewhere to compensate much like a capacitor compensates voltage dropoffs on receivers to prevent brownouts?
sorry I tried ebay and amazon using that # but no luck apparantly they have quit making that exact one There are some red ones that pop up under tsr with a 1 at the beginning, But I dont want to buy something that dont work. Any other numbers that will be ok to use?
I wouldnt say this mod is a "must". Its a good mod but you can get 2200mAh and even 3500mAh lipos for it these days which last forever even without the VR.
Its a must because it will prolong the life of any battery used regardless of capacity. Alkaline batteries aside, rechargeable batteries have a certain lifespan or number of usuable charges. Reducing the need to charge as often is still good for the wallet and environment.
@@TheLEDwheel Ive owned a GT3b for about 10 years now and 2 out of the 3 lipos I use in it are lipos I bought 10 years ago when I converted it to lipo. So you'll have to excuse me if I disagree. Again not saying its not a good idea but definitely not a "must"
Thanks for the tip, it definitely helps more than you think. I covered a video on it on my channel, so it would be great if you can check it out, Cheers ;)
While i don't recommend a higher voltage battery i doubt it would change the range since it probably has a voltage regulator inside. On your RC make sure the antenna is placed as high as possible for max range.
I got no soldering skills but it’s lockdown and I got all stuff needed in this vid so gonna give it a go cheers, I would never have done this without such an excellent breakdown.
Quick tip for a guy or gal them or they with no skills with soldering please go to Home Depot and buy some soldering paste . It comes in a little white plastic Syringe so you can only squeeze out what you want and you don’t need much it also contains flux . Soldering with it is simple just apply a small dab on area then heat with match or soldering iron till it bubbles and pops then stop heating it let it cool and enjoy strong instant solder joints with 100 % less hassle
The Vrm mod is well worth it. I found the part from my regular goto components supplier for $2 bucks, got 2 of them for $5. Took less than 10 minutes and mod done, and now my batteries last me weeeeeeeeks!!!
SkriP StreaM ..what was the part numbers for the regulator, I cant find anything on ebay for what he listed, thanks.
I have a few usb buck regulator boards laying around that will operate at 6v to 30v input. It seem like this would work better as a voltage regulator since they can provide at least 5w of power at a regulated 5v. They should operate at least 90% efficiency probably closer to 95%. It would also allow us to use 2S lipo. Could even be that the regulator shuts off below which would save an expensive lipo pack if the power was left on.
The issue with this radio is that the input sensor is set for 8 "AA" batteries and cannot be adjusted. In other words 12v or 3S.
@@TheLEDwheel in stock form. With a firmware update it seems like the input voltage is adjustable.
Firmware hack.. its not something everyone can do.
Great idea for a buck. Looking at the pins as shown in the video, left to right, this is Vin, GND, Vout yes? So I'd wire the Vin and GND to the (+) and (-) 'In' of the buck (12V in), and the Vout and GND to the (+) and (-) 'Out' of the buck (5V out)?
I personally converted to 18650s. I had a LiPo go supernova on me, and the 18650s handle the draw just as fine.
Did u use any old charger to charge? Or install a chip when you rigged those batterys together? Also you did them in series correct? Any tips? I use a thunder ac680 and it says it can charge Li-Ion so i want to go this route as well.
You could probably source those regulators from a local electronics store.
Thanks for the video, I need to do this with mine, as well as the firmware update.
Awesome! I will go for TSR 0.5-2450 (input voltage at least 6.5V - you can take a normal 2S 7.4V LiPo...) because it's delivered from farnell and my electronics shop has a contract with them. It should work at least that good! I saw also the TR05S05 (min input voltage 7V!!), which should work too!
while the specs are sound, the unit itself will consistently be in alarm mode and beep continuously because it's alarm is set to around it just under 10 volts.
Sure! Sorry about this unclear post, but I was thinking about the hacked firmware, where you can set the input voltage ;)
+Boštjan Bele honestly I have no clue.
There are some tutorials on youtube... just search for gt3b hack! Maybe you can do a new tutorial about uploading the firmware to the transmitter to use 8 channels from it :D
+Boštjan Bele yeah, was thinking about it.. thanks for watching.
Very nice thank you
Hello , good idea. I think that we can use a "step down module" , it cost 1$ or less. The way is to solder 3 wires in the place of the 7805 regulator. These wires allow the step down module to be placed where there is enough space for it (in the battery compartment for example). On ebay , schearch about "step down".
Step down module do not works in linear mode , the efficiency will be better than using 7805.
Bye.
or you can just do what I do and install 8 rechargeable AA and be done with it. my 10 second modification! haven't tried yet but by the looks of it you can charge these or lipo moded rite thru the radio itself. just picked mine up haven't even used it yet still waiting on the brushless upgrades.
IMPORTKILLR R/C I know you posted this a while ago but installing rechargable will not change your power consumption.
I can't find the video with the screen mod😢
I have a question, when you are calibrating your esc's, mainly hobbywing, what is the proper setting to start with before calibrating. Trim dual rate and expo, do you 0 everything. Hobbywing instructions are kind of confusing, they say if you have a futaba do this, and if you have a radio with a led screen do this etc. on your fly sky gt3b I'm talking about! Thank-you
Usually everything at factory settings for your radio. Some ESC's want you to put your radio in reverse and so on... Best if to read any instructions.
Hi, looking through the comments and I'm keen to do the mod, but equally don't want to screw with it too much. Could you tell me what the numbers at the bottom of the component mean & whether that's important?
Thanks
+Martin Burfield The 1303 means nothing important if that is what you are referring too
At 1:21 your caption says to use R-78E5.0-1.0. which is the 1 amp version of this switching module, why is this necessary over the 500ma version?
I dont understand because the stock lm7805 being replaced is only rated for 500ma anyway and according to what I've read elsewhere the flysky radio only draws 140ma with the stock regulator and 90ma with R-785.0-0.5
www.rctech.net/forum/radio-electronics/394162-flysky-gt3b-transmitter-135.html
the 500mah model wouldnot work for me. so i upgraded to the 1 amp one and it works well. however in hindsight i should have verified if the unit was defective.
Ah okay that makes sense.
The R-78E5.0-0.5 does seem to be best value but the R-785.0-0.5 is another 5% efficient.
Hi theLEDwheel, nice video tutorial....Have a question, was trying to cut prongs from voltage regulator and one of the the 1st one broke off from the base of board, is there any way to remove LCD to get at the bottom of board to desolder prongs from underneath.thanks in advance....great videos..... :) I am using the R-78E5.0-0.5 this is the correct one for the fs-gt3b, right?
That regulator will do. As for the LCD i would not recommend it. Is there any part of the prong remaining that can be soldered to?
@@TheLEDwheel no nothing there 😞
I guess you Need too find a way to get behind the LCD
What power supply can be used to charge via the remote control?
AC Adapter For FLYSKY FS-GT3B FSGT3B Transmitter Power Supply Cord Wall Charger a.co/d/emK4TKf
Thanx for the tip ;)
Exactly what voltage reg do I need for upgrade I'm in uk
And dont know much about electronics
Although I'm capable of doing the soldering etc
I used the Recom R-78E5.0-0.5 but the Recom R-78E5.0-1 works as well.
Look up your local electronics supply stores.
our check the Mouser website. Ebay has as well
@@TheLEDwheel so what's the differance between R-78E5.0-0.5
And the R-785.0-0.5
E for energy efficient
Also I've just bought this new 2021 will it already have a upgraded one as I see posts are 5 years old
I have a newer one but have not opened the box yet. However I have seen recent posts of people complaining about battery life so I presume it has not changed.....
I guess you will find out with use as well.
New to this, had to open the radio due to something rattling, it's a black and white fuse cap of some sort, it seems to work fine without it, but what is it exactly and how important is it?
Fuse cap? Capacitor maybe? What does it say on it?
@@TheLEDwheel it's a black and white aluminum cap of some sort, has 20v printed on the side. But it's just a cap. It was rattling around and causing a short so I popped the radio open just enough to shake it out. Now everything is working fine . Just not sure the importance of the object.
Of its working then no prob i guess
How exactly does the voltage reg mod increase the battery life? I have looked at the comments and answers but I don't see this addressed. One more question. As clarification, is the 78E5.0-1-0 the correct part for this mod? Thanks.
The OEM Voltage regulator uses a lot of power to reduce the voltage to 5Volts. The replacement uses les than half the power to achieve the same goal. So you get less power consumption.
do you know how to do that on the FS-GT3C? this 7905 -5 Volt 1A Voltage Regulator in Australia is AU1.85
No I do not know how on the GT3C. I have never opened one up. However, the 7905 regulators are what is in GT3B units and they are the problem. I do not know what is in the GT3C.
Hey Steph, I was revisiting this idea of yours....
Wondering, would this work using a 6.6 volt LiFe Battery??
Carmine
Yes it should.
Thanks! That was FAST. I just finished watching!
PoorManRC phone in hand.. ☺️
hi sir good day . i have gt3b right now , plan to go the mod you have but what if the voltage regulator you use is not available? Is there any that I can use ?? Thank You
That regulator is the best option for the money and I'm pretty sure it is available somewhere.
Just look up "r-78e5.0-0.5" on google.
Thanks
great video sir. and very helpful. I do have a question, do you know if the gt3c has the sane voltage regulator as the gt3b
Eric Vosen sorry, I do not know.
i have a 3c and no the regulator is different ,,,the whole board is different
@@Casey6996 Im going to buy gt3 radio but not sure what to choose between the b or c. Can you give me some advise??
@@RafaelTorres-of1pu C is just a later model better distance also specially for my boats
Steph, that looks like a great idea "on paper".... I'm curious, did you get the 50% more, or even close? It looks easy enough to do. I'm an old fart, like my handle (I'm at least 15 years older than you!). I got back into the Hobby after a long hiatus, since 1998. I originally started in 1985, shortly after Tamiya released the Frog!!!
Well, like life, R/C was a LOT easier back then. THREE Brands, two channels, and it seemed like everyone had a Futaba or Airtronics Radio! May have been other brands, but I never saw any. Buggies looking realistic, until Losi came out with his first flat pan car....... then soon after, everything started to look like Moon Buggies with grossly oversized tires! 😕
But I REALLY digress!
Radios today are COMPLICATED, but do a lot. A friend recommended a Flysky GT2B. Good choice but pleasantly misnamed, because it has 3 channels!! Never had to Bind a radio before, but it was much easier than I was taught! I STILL can't figure out how to make the 3rd channel turn my lights on and off. 😰😠
Still, I'm looking into a GT3B. I like the multi vehicle storage, and the many fine tuning options looks great!
Only thing is - that one looks über confusing!!! I keep seeing videos about mods, upgrades, and HACKS. I'm used to a Radio that you turn on, and USE!
Like, you can hack the processor with a USB jumper, and flash it with firmware that will give you 6.... or EIGHT channels out of that 3-channel Radio!??!? HOW do you even control them? Leaves me with more questions than answers.
At least the trick you pointed out, is something that I know I can do. I'm good at hardwiring and soldering.
And once again, I've written too much! Being retired and disabled is boring! 😜 I've written you before here, I just started a new account, exclusively for R/C.
~ Carmine
OldfartRC that's funny, how old do you think I am? and yes it's very easy to do and yes it does indeed double battery life if not more so..
..... well, maybe more like 25 years older! lol
That sounds like an easy enough of a fix. I'll try it. Any idea if the GT2B has the same issue?
The GT2B is a much simpler radio system. As for the third channel to switch lights on and off you can view my video about turning an old servo into a LED controller or purchase yourself a servo switch.
The GT3B and GT3C have the same display and menu system in a different package but the GT3C comes with a Lipo but I do not know if it better on power consumption.
I still have 2 GT3B's but now I get the Radiolink sets. They are great on power and are even very versatile as to what you can power them with. it comes with a 4xAA battery retainer but it can be removed and powered by up to 3S. the receiver is also high voltage and can be powered directly from a 7.4 LiPo.
This one here even has a built in Gyro
asiate.es/aff?l=97259&i=35116
Or without the Gyro
asiate.es/aff?l=97260&i=35116
And the receivers are only 10$
asiate.es/aff?l=97257&i=35116
Also, I will be 50 in may.
WOW! Living in Canada must be good for your health! I'm going to be 53 in 8 days.... sometimes it feels like 60!
I think there's something wrong with your gt3b for you having to recharge the battery every time you use it. My gt3b is stock and I get 12-15 uses out of Alkaline batteries.
@jstrotha0975 yes. It was a terrible regulator choice they may have changed it sometime along production.
You say at the beginning of the video that the image is wrong that we have to get the 5.0-1-0 model, yet the one you fit in the video is a 5.0-0-5 model as is in the picture. Is it SO important to get the 1A on? I'm asking because I can't find the 1A one anywhere, but the 0.5A one I can.
yes you must get the 1A version. i had installed the WRONG one and the radio was jittery. i got it on eBay
Any idea of an online place to get them that doesn't charge the earth to ship to Spain?
+Andrea Woodvine check aliexpress.com
I did before I asked... no luck :(
Is there an alternative regulator that can be used, eventhough it may be less efficient than the R-78E5.0-1.0? Or maybe adding a capacitor along with the 0.5 somewhere to compensate much like a capacitor compensates voltage dropoffs on receivers to prevent brownouts?
+Andrea Woodvine ebay item 161555481414
want to do this to mine but cant find the number listed on ebay or amazon. what should I look for?
TSR 0.5-2450
Add regulator to that in the search
sorry I tried ebay and amazon using that # but no luck apparantly they have quit making that exact one There are some red ones that pop up under tsr with a 1 at the beginning, But I dont want to buy something that dont work. Any other numbers that will be ok to use?
Google?
@@leeroyexcavator9149 www.mouser.ca/ProductDetail/TRACO-Power/TSR-05-2450?qs=ckJk83FOD0XpEgQBSwF%2FIw%3D%3D
does this effect the transmitter signal power to the RX at all?
Not one bit
can I use a 0.5 1.0 recom I can't find the 0.5 .5
yes you can.
Does this reduce range of the radio?
No reason why it would. Has nothing to do with the electronics.
@@TheLEDwheel Nice, thanks buddy did you get the 50% increase in run time?
It definitely did.
@@TheLEDwheel Very cool thanks for sharing!
nice!!
can i do this mod even if i still use AA bateries?
That's even more reason to do this..
awesome mod. how much longer did it last?
i think possibly 4 times longer.
awesome going to do it for sure. thanks for replying. new sub now. lol.
+2cwik4u104 take your time and have fun. thanks for watching. :)
I wouldnt say this mod is a "must". Its a good mod but you can get 2200mAh and even 3500mAh lipos for it these days which last forever even without the VR.
Its a must because it will prolong the life of any battery used regardless of capacity. Alkaline batteries aside, rechargeable batteries have a certain lifespan or number of usuable charges. Reducing the need to charge as often is still good for the wallet and environment.
@@TheLEDwheel Ive owned a GT3b for about 10 years now and 2 out of the 3 lipos I use in it are lipos I bought 10 years ago when I converted it to lipo. So you'll have to excuse me if I disagree. Again not saying its not a good idea but definitely not a "must"
hello dont understand english very well, could you write here the exact reference of the transistor? thanks
R-78E5.0-1.0
@@TheLEDwheel thanks my friend, also fits with lipo 3s modifications? thanks
Yes sir it does. Been using a 2200mah lipo in mine since this mod and no issues
@@TheLEDwheel 2200??? WTF :D dont find such lipo in correct size... just find a 900mah :( :D :D :D
Yes, just fits. Its a no name and its been a while but i found it by looking at each battery size after measuring the space available.
is it worse or better
better
Dalek! terminate terminate!
mikes hobbie's and random stuff You like my T-Shirt? lol ... EEEEXTEEEERMINAAAAAATE!
:P
totally agree.
Thanks for the tip, it definitely helps more than you think. I covered a video on it on my channel, so it would be great if you can check it out, Cheers ;)
U
Dude the tools you use are so barbaric.
Use what ya have. Sorry my tools are not up to your standards.
Dissapointed with range on GT3C can i try it on 2S lipo instead of 1S ?
While i don't recommend a higher voltage battery i doubt it would change the range since it probably has a voltage regulator inside. On your RC make sure the antenna is placed as high as possible for max range.