Vince, this golden holes in PCB in one row are UART pins. Manufacturer programming this STM32 microcontroller with that pins using robot arm and pogo pins, you could use STLINK to read/write whole firmware from your cart
Winbond chips usually handle bios (the software/firmware. One of the Winbond chips is a NAND. The NAND is usually used for storage like on a flash drive.. the OG ps3 (model A-G) used 2x 256mb NAND chips for the bios.
@Ellis The DJ it is storing the Kart's software. The Mario And Luigi Karts are physically identical, so the Kart has to have storage on it where the data is stored than tells MKLive which models and sound effects to use.
Realtek is commonly networking. Winbond is usually memory. The W29N01HVSINA winbond chip is a 1GB NAND flash memory. The W631GG6MB15I winbond chip is 1GB of DDR3 memory. So the realtek chip is a network processor the W631GG6MB15I chip is the memory for doing processing tasks and the W29N01HVSINA chip acts like a hard drive, storing all the software which makes the cart work. The STM32F is a arm processor. So it could be controlling the Motor, camera or charging. I would have to look at the board to know which.
Realtek chip is an SoC as well. Might be doing the video related stuff by the sounds of it. www.realtek.com/en/products/communications-network-ics/item/rtd1195
For the Winbond W631GG6MB-15 the datasheet can be found here: www.winbond.com/resource-files/w631gg6mb_a02.pdf Under "GENERAL DESCRIPTION" it says that it is just a RAM chip, and the -15 variant shown in this video is "compliant to the DDR3-1333 (9-9-9) specification" according to the datasheet. Whatever that means :P I also found a datasheet from digikey for the Winbond W29N01HVSINA: winbond.com/resource-files/w29n01hvxina_revc.pdf This one is just flash memory (EDIT: specifically, it's NAND). I'm guessing that it just holds the OS (or whatever instructions it needs to do its magic). Unfortunately, I could not find out any new info on the Realtek chip. All I found out about it is what you found out: A combination microprocessor and WiFi unit. I couldn't even find a general description of the PB variant featured in your video here. I really wanted to provide a RU-vid video or article that explains how to read a datasheet for beginners, but all the ones I could find were reaching into the more complicated area. I know very little about this but I would recommend getting in touch with either BigCliveDotCom or Dave Jones from EEVBlog if you want to know how exactly to decipher the information in them. That, and they have excellent RU-vid channels that I'd highly recommend checking out simply for the entertainment factor :) Happy Tinkering!
not suprised u cant find any info about that realtek chip.i can tell u it can be used both in civil and military use.and many datasheets where after war removed search engines
@@ragequitgaming2490 people have said that they are glued on tight and have to be cracked off. I have slot cars and it sucks trying to glue rims back on. Most glues out their can’t do the job right.
It wasn't in mine either... I found it when I went to the channel itself. That's kinda weird how RU-vid doesn't put some videos in subscriptions even though I'm subscribed to Vince
@@justcallme00oogy I don't think it's intentional when a video doesn't get added to subscription box, so I wouldn't blame RU-vid. I think it's probably a glitch and had something to do with the amount of videos being uploaded at the time. If there are more videos being uploaded than normal, this happens.
But I feel like many people have this problem a lot of times and if RU-vid really wanted to fix it they could I think they are just prioritizing it although I could be wrong though but either way it does really suck because I miss out on a good video and creators miss out of views and lose trust in RU-vid
@@justcallme00oogy again, it probably is just a glitch. If there are too many videos being uploaded at once then the servers probably have a hard time keeping up. It isn't a big enough problem to warrant upgrading the servers right now
I want to remove the yellow wheel of the tires to clean it from dust and hair, in the video looks easy to take it but the more that I pull it, I can't remove it. How can I remove it without damage it?
Was looking at the rear axle bearings and thinking a set of sealed ball bearings would provide quite a lot of improvement as the PTFE over brass leads to a fair bit of inertia to overcome before the motor can drive the axle and the brass sheath over steel rod is going to wear considerably. I would so be putting a pair of sealed ball bearings in stead of that doomed to fail brass and PTFE arrangement and replace cheap Chinese motor with one of better quality that is able to utilise the same power range and frequency as the cheapo one, maybe reinforce the gearbox cage to stop loss of power due to flexing of plastic parts?
The STM32F chip is a microcontroller- it probably drives the motors and reads the potentiometer and that kind of thing. I'd put money on the Realtek chip being a webcam SoC, and those chips don't have any hardware for generating motor drive signals, so the microcontroller is there to handle that.
You have some stones Vince. Broke your Luigi model and tear this one apart. These are getting hard to come by here in the States. The Luigi is very hard to find. I’ll be getting mine at the end of the week. I think it’s going to be fun.
I have a question. I can't get the front wheels off. The yellow rims to be precise. I pulled very hard on them and am afraid of something breaking off. In the video they come off very easily and I'm wondering if I've done something wrong. I wanted to take the wheels off without unscrewing the whole kart
I hear the signal to the cart is not very strong and can drop off when the cart gets too far from the control is there a fix for that I wonder? Bigger ariels perhaps?
Vince what’s the name for the second gear? Mine snapped an I don’t know what to do. It’s the front the makes it steer, if there is no name can you recommend me some ways to repair please.
Thank you for awesome video. Very interesting . But I have one little question. How did you take off the wheels so easily ? I tried to take it off to clean but it doesn't work. I'm afraid to break it.
I forgot to mention that the car is making a soft ticking noise when its on like a router working but a lot softer you have to listen close. Pleaasee HELP
Just got one of these. Noticed that mine doesn’t go perfectly straight when in reverse either. Still a lot of have. I haven’t unpacked the gates yet. Using it free roam with my cats is enough fun for now. Too bad we can’t take pictures with the camera.
Considering the Kart's minimal use of necessary components, I wonder if the motherboard, camera, battery and USB port could be installed in to the chassis of a gutted RC car that had a larger wheelbase/clearance and higher torque motor.
Hey. Great video. Id like to take my front wheels off but they are an way stronger than yours. Im afraid to pull more as it feels id brake the steering arm. How hard did you have to pull the first time?
PLEASE HELP !! I have taken my kart apart to take out mario and sculpt toad inside. When some of the parts put on the car it turns on,camera works,steering works but it wont drive forward or backward. The backward red light is on when i press the b button. Can it be something with weight?? Please help me so i can finish my custom toad car and drive with it together with my mario car. PLEASE HELP!!!
Thanks for his! I’m wanting to make a drift mod using some Nerf third-party 180 motors and pvc piping for the tyres! Needs more juice for the battery tho. Will have to figure something out. Also, shaving off some plastic at the front axel so I can get more turn would be great too!
the wheel hubs seem to come off so easy in your video .i am trying to remove them from my kart to replace them with some of my own design but they wont come off .any advice would be greatly apreciated.
Hi, I was cleaning the rear tires and I accidentally remove the tire from the axle. I put them back together but the whole axle looks as if I didn't push the axle all the way inside the tire. Did you have the same problem?
Already want a spare battery, so I don’t have to wait for it to charge. I can’t find that specific one anywhere though. Might tape a battery pack to the top and just let it charge while using it 😂
The Winbond chip in the can with the Realtek processor will be DDR RAM and the other part outside the can will be NAND Flash memory. Additionally, given its placement, the ST chip will be an interface to the USB C port possibly to negotiate charging voltage and current when charging. I presume the USB data will go to the Realtek chip for firmware upgrades (unless it can do those over Wi-Fi...)
Thank you for the video! Was wondering how these little cars work. Was surprised to see actual bushings on the rear axle, but i suppose you have to have those since the axle itself is not round. As a side note, they look very similar to those small metal grommets you put into fabric with special pliers. If so then it's a clever cheap solution instead of having them custom made. If someone is so inclined looks like there is plenty of space to replace them with bearings for slightly higher speeds. As far as steering, the motor-potentiometer combo is basically a servo. Motor turns steering and servo tells the kart at what angle it's turned. I suspect it can easily be replaced with an actual RC servo, though some plastic might need to be cut away. Still, better steering is always good. Likewise the drive motor can be upgraded, but only with another brushed motor since it's just two wires. Again, as pointed out in the video, some plastic modifications will be required. And last, while i am not too familiar with microchips, i suspect that those closest to the charge port are the battery charge controller and motor controller for the back. Those can benefit from a small heatsink if the drive motor gets upgraded. Speaking of microchips, looks like the Realthech with the thermal paste is a 64-bit chip (RTD1195) that does a bit of everything on the car. It's similar to what runs a Raspberry Pi, a popular micro-computer. www.realtek.com/en/products/communications-network-ics/item/rtd1195 The other one under the same heatsink is a 1GB RAM chip. www.digikey.com/en/products/detail/winbond-electronics/W631GG6MB-11-TR/7931131 W29NO to the left of those two is a communications chip. And the STM32 to the right is another smaller memory chip. And while i don't have a board to take a closer look at, i will not be surprised if that tiny black rectangle with four dots, one on each corner, is the transistor/relay that actually powers the rear motor. Hopefully i'm reading everything right about them lol. Would be great to get some thermal images of the board with it actually running and both motors under load, that way it's easier to determine what's what.
There's definitely a power MOSFET of some sort for driving the motors; motors need a massive inrush of current to get started - too much for a logic chip to source! I'm not sure which black rectangle you're referencing though. Where on the board is it? By the way, I have a reasonably complete table of hardware on the Switchbrew wiki page for this game, which lists everything and its purpose, if you're interested in learning about the specific microchips.
@@CFSworks At 10:02 you can see a small chip of some sort kinda in line with AN in "Taiwan" on the main chip. That's what i was referring to. I suspected it to be the mosfet (or transistor, as i called it) since it's the closest chip to the drive motor solder points. Really my biggest interest for locating said mosfet is just to see what it's capable of and how far the drive motor can be upgraded before having to swap that transistor for something more powerful. Also wow, that is a lot of neat info on that page! Though at it's core not many things need to be upgraded to make the cars more fun, and most of those are hardware (motors and an external signal booster, or at least better internal antennas instead of those paper staples lol). Still, awesome to know what's what and how's how. Speaking of antennas, a mini omnidirectional FPV antenna should work fantastic for the car since that's what they are made for.
@@AgentWest Ah I think I see what you're looking at - there's another one next to the Winbond flash chip (on its left side), right? Honestly those things look pretty small to me, but they're connected to pretty wide traces so they must be moving some current. Note that the STM32F is what's actually responsible for cycling the motors on/off, so that chip you're looking at is reasonably appropriately-placed, if that is its purpose. Those staples are pretty bad. Judging from photos in the FCC filing, they look like they're about 2mm wide and 15mm around the loop, which would make them 1/8th wavelength at 2.45GHz. Just upgrading those things to quarter-wavelength would yield a pretty good improvement, I think. They also seem to have a radiation pattern that mostly goes straight up (I have a surprisingly easy time operating my kart when I'm a floor above it) but I'd have to model them to know for sure.
@@CFSworks 32F is a motor controller? From what i was able to find it just looked like a memory chip, but i might have miss-read or was looking at a different chip with similar designation. It's odd that the car has two antennas, yet they both broadcast vertically. Maybe the idea was that a person is taller than a car so signal has to go up more? Still, looks like there is plenty of space in there for a simple wire loop around the perimeter of the board. Wonder why they did not go with that.
@@AgentWest The STM32F is a microcontroller (so you're half-right: it does *have* memory) which, here, is responsible for all of the "real-time" parts of the kart: polling sensors, generating PWM signals for motors (and running the control loop that keeps the steering at the desired angle), reading the "ignition button," and controlling the lights. The RTD1195 does all of the network/video tasks and communicates with the STM32F for everything else. I just modeled out the antenna (as a 9.5mm by 2mm rectangular wire loop) and it looks like it has a gain of +0.9dB out the sides, -6.0dB out the front and back (i.e. looking through the hole), and +1.6dB out the top and bottom. I'm sure my model is off a bit (especially as I don't have exact dimensions), but that matches up with how loop antennas that short generally behave. The most likely reason the two of them in there are at a 90° angle is to cover each other's "blind spots." The good vertical reception seems to be due to being in neither antenna's blind spot when the Switch is above (or, though I haven't tried it, below) the kart.
You were asking about the "motion controls." I think the IMU is that chip on Side-B of the board, front-and-center, with 4 pins on the side and 3 pins on the front/back. I believe its part number is LSM6DSL by STMicroelectronics. Would greatly appreciate confirmation on this if you ever look at the board again. :)
Alguien sabe cómo sacar la rueda para sacarle los pelos que se enredan entre el eje y la llanta ? Traté de hacerle un poco de fuerza pero me da miedo romperla o dañarla. 😔
The framework is internally called "RCD" - which I would guess stands for "remote control devices." The fact that they created a separate framework for the whole wireless setup and split out the parts unique to the kart (which, by the way, is codenamed "Fuji") suggests that other products using the RCD framework may be on the horizon. I'm about 95% sure the kart is actually a first-party Nintendo product. There's some driver code that they've open-sourced (for GPL compliance reasons as the kart runs Linux) and it's got Japanese comments all over the place.
@@CFSworks Hi, could you link to any resources that reference all of this? I'm prototyping with RC cars and would love to know more about the internals of the kart, thanks! EDIT: nevermind, just read your other comments about the switchbrew page, thanks a bunch
these boards are generic boards with various types of chips in it. u cant find anything on google., sometimes realtelk chips, sometimes mediatek chips etc etc. the windbond is the memory chip i guess. good luck vince.
