Wltoys K989 Rally Car: Arduino "Micro RC" 2.4GHz Upgrade, Steering Improvement
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- เผยแพร่เมื่อ 21 ก.ย. 2024
- Get the K989 here: www.banggood.c...
This video shows you, how to remove the huge „dead zone“ around the center position of the steering of this 1:28 4WD Wltoys K989 Ford Fiesta rally car.
I discovered this issue, after I realized, that my "Micro RC" system offers a much better steering accuracy...
How can we fix this problem? Well, we have to replace the entire electronics, except of the steering servo and the motor!
In order to have access to the motor wires, I have to disassemble the entire drivetrain. The differentials are also disassembled, cleaned, and greased with silicone grease.
Of course I’m using my 2.4GHz Arduino „Micro RC“ remote control system. The ESC is a 10 brushed type from Banggood.
Car: www.banggood.c...
Spare parts: www.banggood.c...
ESC: www.banggood.c...
Some links above are affiliate links. You can support the channel, if you use them. There are no additional costs for you. Thanks, guys!
And yes: Idiot drivers always have a lot to repair. At least, if they do a race with worn tires and finally produce a huge crash!
Aluminium rims upgrade: • Wltoys K989 Crash Repa...
LED headlights: • Wltoys K989 LED Headli...
Drift assist video: • Wltoys K989 Rally Fies...
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What do you think about this video? Please post your comments down below. Thanks!
you don't expect such a little car going so fast can it go even faster?
Yes, I guess it could be even faster, if I would change the gear ratio... But the problem of such small cars is, that they need a very smooth surface to run
Ya this little car shall rip on an indoor track
Would adding extra weight help, as in if your engine is quick perhaps youd get more traction
yeah RadlineRC 1/24 scale gone 1/16 Brusless coming soon th-cam.com/video/DVq375dyYXE/w-d-xo.html
Awesome! I Just got my hands on one, and did a review. I will do a followup video of adding an FPV system on board.
Wow we talking some serious transformation here
What surprises me about wltoys is that they make METAL micro rc cars. 4WD., LIPO powered veichles RTR for under 60 bucks yet kyosho makes AAA powered 2wd cars for over 100 dollars, wth?
this vid just made me wanna buy on of those
Then do it. But you will need a smooth surface to run a 1:28 car
TheDIYGuy999 I need the micro rc conversion , but no computer to program adrino :(
You can also use a remote like this for the conversion: www.banggood.com/New-Version-AUSTAR-AX5-3CH-2_4G-Transmitter-With-Receiver-For-RC-Car-p-1046802.html?rmmds=search
TheDIYGuy999 I've got one of those austar transmitter combo in the mail : ) , but would like to try your design for my older brushed models
Then try it. Programming the Arduino is relatively easy. Have a look at my other videos and on the transmitter manual on my GitHub for more details.
very nice, thanks
That has to be upgraded or modded.
Great video...big help!
Thanks
Well done!
OOOoo you could stick a mini spy cam on that thing, that would be fun
Yes, this would be cool
hmm, might bounce a bit, so perhaps stick it to a sponge, then the sponge onto the car body ... double sided sticky tape perhaps.
Anyway, if youre up for that - that would be fun. Have a good summer, all the best
👍 you have test long distance rc nrfl24l01 ?
About 50m in free air
Hey nice video. Does your stock brushed motor also gets so hot? The car also has a lot of resistance when I try to push it by hand. Very different from other RC cars.
Thanks. It's getting warm, but not hot. You should disassemble and check / clean your drive train.
@@TheDIYGuy999 Thanks I will
Makes it work better to break easier
Need tad bit fatter tires for better grip.
Hey dude do you think you could that to my wltoy onslaught a989 please upgrade it
Damn these little guys rip, I'm gonna get one and put an fpv aio on it
Yes, it's very fast for its size
If you still have it and did put the fpv on it plz upload a video of it 😄
hi can you provide a tutorial how to make the transmitter and receiver(step by step using common pro micros) and is it the potentiometer with the deadzone or is it the circuit adding the deadzone
Receiver: th-cam.com/video/yzYWgpmcsE4/w-d-xo.html
Transmitter: th-cam.com/video/HNjLZuy2b2A/w-d-xo.html
The videos above are not step by step, but with the help of the schematics on GitHub, it should be a piece of cake to wire everything up.
According to my measurements on the Wltoys transmitter, the dead zone is added by the circuit. So the transmitter could be used as a base for the "Micro RC" conversion.
at spay did you use for waterproofing?
I can't find this local,y maybe a type so I can look for similar?
Thanks
Plastik 70 from Kontakt Chemie.
Older video I know. But I changed my esc to the same as yours but 1 big problem I had. There was a delay between applying the brakes and transitioning to throttle. Do you have the same issue with your esc?
No. Maybe the issue is your remote?
@@TheDIYGuy999 I don't think it is. I use the same remote for multiple vehicles without problem. Maybe it's just MY speed control lol. That's just my luck. Thanks for your response!
So the Arduino RC is compatible with WLToys transmittrer? The chip is the same at least
No. I have also replaced the transmitter with my own.
you need to change your wheels to a get more traction or grip
Too much grip is boring 😉
this is 7.4v system. technically I should be able to drop my RX-461 receiver from my MT-4 could I?
Most ESC have a 5V (or higher in bigger models) BEC voltage regulator integrated. So you always have a stable supply voltage for the receiver and for the servos. So yes, you can.
Your micro rc receiver is designed to support 7.4v? Thanks
Yes, the receiver supports 7.4V, but servos usually require 4.8 - 6.0V. In this car, the receiver is supplied with regulated 5V from the BEC (BatteryEliminater Circuit) in the 10A brushed ESC
Is it possible to connect one of these cars to a dumborc 6fg?
Yes, it has a standard 3 pin servo interface. You also have to replace the ESC with one with standard interface like I did here
TheDIYGuy999 thanks for the reply, does that mean I have to use an esc without the gyro? So maybe a dumborc 6f instead of the 6fg?
Does it go this fast out of the box?
Yes
some brushless motor fit in this car?
A 2030 motor should fit
Hi, do you Sell it with upgrade?
Sorry, but no. You can find all the informations to build your own in the description
Leider kann ich Ihnen keine persönliche Nachricht senden. ich bin ein totaler Anfänger wenn es um RC geht. ich finde es super was Sie machen. Würden Sie mich für ein Entgelt beraten und unterstützen?
Danke für das Lob. Ich kann gerne ein paar Tips geben:
- Nur Fahrzeuge mit Ersatzteilsupport kaufen. Für den K989 sind z.B. Teile bei Banggood zu finden: www.banggood.com/search/k989.html?p=NZ29024828314201605E
anscheinend im Moment aber nicht alle.
- "Hobby Grade" Fahrzeuge haben immer 3pin servos. Viele billigere können aber problemlos darauf umgerüstet werden
- Wichtig ist eine präzise und möglichst spielfreie Radaufhängung
- Federbeine mit Ölfüllung verbessern die Fahreigenschaften stark, da das Fahrzeug nicht "hüpft" (Falltest aus ca. 20cm machen).
- Für einen Anfänger kann ich den HBX 12891 empfehlen: www.banggood.com/search/12891.html?p=NZ29024828314201605E
dieser kann auch auf brushless (Motoren ohne Kohlebürsten) aufgerüstet werden
- weiches, flexibles Plastik ist oft besser als die vielen "upgrade" Metallteile, da es sich bei einem Crash ver- und wieder zurück biegt. Ein gutes Beispiel ist der enorm robuste WLtoys 12428
- Sehr viele Infos sind in dieser Playlist zu finden: th-cam.com/play/PLGO5EJJClJBCjIvu8frS7LrEU3H2Yz_so.html
- Immer die Video Beschreibungen lesen, um alle Infos zu bekommen.
Vielen herzlichen Dank für die ausführliche Antwort. Jetzt habe ich erstmals ein wenig Material wo ich mich damit beschäftigen kann :-)
Ich habe einen Tamiya Neo Fighter (ready to run set), diesen würde ich gerne etwas schneller machen.
Was halten Sie davon: Kugellager Satz montieren und mit einem 3s Lipo 4000mah und LipoWarner (oder gar 6000mah) betreiben?
Auch würde ich gerne meine Coke Can Cars etwas tunen, da habe ich Ihre Videos gesehen und denke, dass könnte ich vielleicht hinbekommen. Jedoch würde ich gerne auf einen 2.4ghz Pistolen-Sender aufrüsten, doch da habe ich leider keinen Plan und wenn noch Arduino ins Spiel kommt, dann ist nur noch Latein. Gerne würde ich von Ihnen lernen und fragen ob Sie eine Video Konferenz (Skype oder Whatsapp) "Master Class" für mich anbieten würden, gegen Entgelt versteht sich. Das könnten wir via e-mail besprechen.
Bitte. Kugellager für den Neo Fighter sind eine gute Idee. Ich habe sie von Anfang an verbaut. Der original ESC verträgt leider keinen 3S Akku. Dazu ist ein Umbau auf brushless, wie in meinem Video nötig.
Der Umbau des Coke Can Cars ist für einen Anfänger weniger geeignet, da alles extrem eng ist. Auch die Arduino Fernbedienung erfordert viel Wissen. Für den vorgeschlagenen "Privatsupport" habe ich leider zu wenig Zeit, beantworte aber gerne Fragen hier in der comments section.
Vielen Dank für die rasche Antwort.
Gibt es einen Pistolen Sender welchen sie empfehlen? zB FlySky?
Cool man!!! im making videos like these.. could you come and check them out? thanks
Thanks. I like your new robot project.