I'm always surprised that with all these large currents and voltages used that the smaller component modules are not damaged. Well done for all the hard work involved in this project. Much appreciated.
How do you think the Chinese product came into existence in the first place? This is reverse engineering of a product created by reverse engineering of an original from who knows where
@@MOSKAU15 i have a feeling there's been case law regarding intellectual property experiments exceptions that people aren't just aware of and it just sounds more right in their head about a patent being absolute monopoly . It's like people who think filming in a federal building is illegal even though federal means it's public property
Very good job, I’ve been working on a modified Chinese induction heater, in my opinion it could be a good oxy acetylene replacement for pre heating or just heating for removal of rusted components
Wow this is really impressive and clever. I can't imagine the a mount of time and effort that goes into reverse engineering something like this. I really appreciate you breaking down how all the sub circuits work. You've earned my sub!
I am just amazed that CHINA actually made something that is not a CHINESE JUNK. I look forward to seeing the heavy duty welder you have planned Kasyan. Very well done video with explanations also fella. Spending way more than necessary is O.K. for oneself. This is for ourselves so we do all the best. A reasonable waste of funds makes one put a smile on ones face. When cutting metal with rods. One must soak the rods in water for a day, then cutting will be greatly enhanced. Keep up the great work.
i bought a similar welder to that, all built up in a nice case, with leads, shipped to England and bought from a retailer with his proffit margin for around £60, makes you wonder how they do it ?
Well done! I really enjoyed it. I would like to see more detailed descriptions of the sub-circuits for educational purposes. I really hope that you’ll do the large version.
Once again fascinating! Thank you. However please be careful welding directly on concrete, especially when you cut using the arc. Concrete when heated intensely locally will try to expand. But when the heated section cannot expand it builds up huge stresses and can explode like a small grenade! Also, could you please suggest what components I might have killed on the small yellow welder using a 4mm rod 😆 I bought it after seeing your fantastic video on it and had a lot of fun with it before accidentally killing it.
It would be a big concern with a crucible full of molten metal, but not with the amount of heat energy that the usual weld spatter can carry with it. It's certainly enough degrees C, but not enough Joules of energy to cause a big explosion that would be life-endangering. But you can still damage (spall) the concrete and make it look ugly, or end up with small bits of very hot concrete in your eyes or making an unsightly burned hole in your hair.
@@kfoltman just depends on the concrete too. Concrete with pockets of rocks can surprise with the size of crater left behind. But kill? Not normally. It's just ugly and can ruin your driveway.
It depends! You can tell what went wrong by dismantling the welder machine on the workbench and starting your diagnose. I would check the 1. bridge rectifier, 2. the IGBTs, 3. the schottky diodes. You can also check the auxiliary power supply, if you're lucky, this ic LNK626 or any other TOP switch ic like TNY280 depends what welder you have etc. gets damaged and once the auxiliary power supply is defect the whole appliance stops working. Have you got a schematic for it?
@@tr_2sc1970 I know, I once repaired one with a defective PCB (broken PCB trace from being moved around a lot) on the aux power supply board. But it is a lot more intimidating, many things were totally new to me. Thankfully there are schematics of similar welders online, so it's easier to understand what is supposed to be happening. Interestingly, many of these schematics seem to have been created in Russia or maybe some other Russian-speaking country.
Do you know what model number MasterCraft lists it as? I would love to be able to make the comparison. BTW if anyone can suggest an affordable option to produce a "spool gun" that I can use on my Lincoln Wirefeed welder in place of the SG100 that Lincoln markets for this unit, specifically the Lincoln 180HD Wirefeed, I desperately need to have aluminum welding capabilities and I even have the argon gas tank prefilled etc I just ran out of money before I could afford to invest in the spool gun so I'm definitely interested in any input or suggestions to produce one myself from available and affordable components from the aftermarket. Thank you in advance and I very much enjoyed the video and encourage you to produce more like it and definately the larger model you spoke of!
So cool. I would love a welder with more modern controls. Much like lab power supplies, until recently they have all used outdated interfaces. It should even be possible to turn it into a 5 in 1 multi-welder using an ESP32 to drive a wire feeder for mig welding and gas solenoid valve for tig. The microcontroller could also allow you to set pulse timing and ramps using the PWM output, which are important for tig welding. It would only add maybe $30-40 to the cost between the ESP32, solenoid valve, wire feeder, connectors and display. How about a series where every video adds a new feature to the welder? Adding mig in one episode and tig in another, and a mini compressor for air plasma cutting in another.
It will be really usefull if such device can be used for battery charger/maintainer where more than 80 amps are required. Could you please make a video showing how to lower the output voltage to ~14.8-15v and keep the high current?
I wanted to use one of these welders as a power supply for an induction heater project, but I’m not good enough with electronics to adapt it. The voltage drops too far when the induction heater switches on. Maybe if I watch a few more of these videos I might get some ideas.
Have you ever tried resonant topology for the welding instead this hard switching welder,it has more power density and reliability than common inverters
Can you manufacture this unit for sale to us? Add switchable 120/240 input with settable current max inputs to allow matching the AC breaker rating available. The welding performance would then depend on the AC circuit available wherever you are using the unit.
Wish someone was able to make one of these budget welders with actually good parts. Seems like so many of them don't work or you can run a 2in bead before it cuts out
I kenpt getting this video recommended to my home page for a week I didn't know why, so I decided to watch it anyway I was not disappointed. THX RUclips
@5:40 I have a Dr Meeter bench top ps and it just quit working one day with very low hours and power usage. I can't figure it out as all caps are good and no visible burned our resistors or transistors. I even took out 3 of the transistors to check. Anyways I'm stumped so this part may be my answer. I wish wasn't such a noob. I got all the stuff for learning purposes and now can't do much. So I'm on a mission to build everything my own.
You're gonna make transistors from [insert patented method] in your microwave to purify and set frequency (aka from scratch). I don't think the FCC would like that, they would know
Thank you. I found your video informative on the design function, the circuit operation, your adaptations, and your potential redesign. Please keep it going. Kudos for your hard work. I have learned that most of the welders from China have economizations in the oddest places. Those economizations have the effect of limiting functionality in many ways. Have you considered doing the same on a TIG welder? Tell me what equipment you have, how you got started, your education, and what you do for work. Great job!
hello Sir, great work. I would like to know the test procedures you carried out before giving the igbt complete 310 VDC. I mean did you gave igbt's less voltage at first to test whether the switching and current feedback is working correctly or did you just directly gave the inverter the entire dc voltage and started the inverter. If you do know a method to test without giving the igbt's the entire voltage, please let me know.
@1:50 is why no country should ever export over seas. Each continent should have its own manufacturing centers for all products. It wouldn't be that hard to do and it would make life simpler. That's just fact. If over seas shipping occurs its simply a one off custom job.
Hi, could you please explain the design decision in high end expensive welders to use single IGBT module that contains as many as 12 IGBT integrated within the module? is there any other benefit aside from compactness?
So you remove all of the components from the pcbs, and photograph them and do a new layout? I am not familiar with Sprint - layout. Do you import the .BMP and put the layers on the top? I am assuming it is a 2-layer board.
China is one hell of innovative tool master & manufacturer who've serviced billions of lives globally, quite grateful about that. Copying is a sincere act of flattery!!! China 💪💪
NOOOoooo.... We need shipping to be more expensive from China. Buy local. At least local companies don't want you to die. Stop funding the Chinese who want to use any funds we provide them against us. I want friendly companies / countries to supply me with parts.
Thank you for the this fine video! The concept 'stealing from china' is by it's self interesting, but you actually copy the product (no mean task) and evaluate the products strengths and weakness, and then address ways to improve it. All in a very clear and concise, well presented, professional manner. I w[ll have a look at your archive and subscribe. Well done! '
Me pregunto si se podría aprovechar como fuente de poder para un equipo de audio. Por cierto, excelente trabajo. Se aprecia el esfuerzo y el tiempo dedicado. Saludos desde Argentina
Please explain what the duty cycle is when there is no load on. . ./ . . . standby I use this scheme. but the igbt and mosfet get hot and explode in 15 minutes without any load.. Thank You
I love these "Stealing from China" videos. Many objectors don't realize that many, but not all, China products are commercialized amateur community, and opensource, projects. So reverse engineering these useful but simple electronics, and sharing it within OUR community, is alright by me. As for those who unsubscribed, do you think maybe, this guy isn't in support of Ukraine war, and has to be discreet with what he says? Or do you really think HE deserves YOUR abuse?
Or that Ukraine war might be a holy war or something like this? It's only brainwashing. Did anyone actually made the effort to find out what it is happening there and for what reason and who is to blame? Whatever media is telling us it is and always was a lie used for someone's purpose.
I love doing reverse engineering, however sometimes I ask my self ! Why I'm I doing that ? I'm working hard, spending alot of time and money ! For absolutely no profit ! The only consolation I get is the joy when you find out at the end that your copy works fine just like the original one ! That feeling is something you cannot buy with money !
Huh, so thats how they work! I love your videos, I'm using them to learn power electronics and see how these devices function. Odd question, but what about making a DC arc welder? I ask because I considered buying one from a government auction, a Lincoln 250MK that makes it's DC wave by using a brushed motor. Have you ever heard of that?
I would love to see you take this project to make the Lamborghini of top end product, still on the small portable scale of a home user product but with all the features of the best commercial units. This is the first video of yours that I have seen, liked and subscribed! Good job man 👍🏼
I'm always surprised that with all these large currents and voltages used that the smaller component modules are not damaged. Well done for all the hard work involved in this project. Much appreciated.
Tesla inverter just doing wot comes naturally. Light i
chinese mathematics nerd + businessman + cheaper idea
Thanks for not only providing all the details for building this welder but also the detailed description on how it works.
Amazing work
Converting a simple inverter like this to tig welder with hf start might be intresting as well.
I would also like to see such a conversion.
@@adipuiu5603 yes...me too. Thanks
Same here, too
That would be cool to see
He is using PWM control so an ESP32 which has high speed PWM should be able to do that and also pulse and ramp control.
it's not stealing, it's reverse engineering.👍
Its not stealing, its stealing from a thief...so more like reacquiring?
How do you think the Chinese product came into existence in the first place? This is reverse engineering of a product created by reverse engineering of an original from who knows where
Isn't reverse engineering constitutional protected under federal law
@@wertiaaudit5746 Its mandatory in chinese federal law
@@MOSKAU15 i have a feeling there's been case law regarding intellectual property experiments exceptions that people aren't just aware of and it just sounds more right in their head about a patent being absolute monopoly . It's like people who think filming in a federal building is illegal even though federal means it's public property
One of the best electronic youtube channel in the internet ❤
Very good job, I’ve been working on a modified Chinese induction heater, in my opinion it could be a good oxy acetylene replacement for pre heating or just heating for removal of rusted components
Wow this is really impressive and clever. I can't imagine the a mount of time and effort that goes into reverse engineering something like this. I really appreciate you breaking down how all the sub circuits work. You've earned my sub!
I am just amazed that CHINA actually made something that is not a CHINESE JUNK. I look forward to seeing the heavy duty welder you have planned Kasyan. Very well done video with explanations also fella.
Spending way more than necessary is O.K. for oneself. This is for ourselves so we do all the best. A reasonable waste of funds makes one put a smile on ones face.
When cutting metal with rods. One must soak the rods in water for a day, then cutting will be greatly enhanced. Keep up the great work.
China makes good products all the time, it's a matter of who cared to design it well.
The Chinese govt isn't good tho
I happen to like Chinese junk
Will you please make 0-30V 0-20A 'TL494+LM358 Switch mode Lab bench power supply' for us.?
Yes!!!
This has been a wonderful project. The irony of copying a Chinese design is not lost on me.
i bought a similar welder to that, all built up in a nice case, with leads, shipped to England and bought from a retailer with his proffit margin for around £60, makes you wonder how they do it ?
Slave labor, from its build to the materials being mined.
Well done! I really enjoyed it. I would like to see more detailed descriptions of the sub-circuits for educational purposes. I really hope that you’ll do the large version.
Agree
Google patents have 100 pages detailed description
I am impressed that you succeeded to replicate such a complex project! Well done! And thanks for making the design available!
Once again fascinating! Thank you. However please be careful welding directly on concrete, especially when you cut using the arc. Concrete when heated intensely locally will try to expand. But when the heated section cannot expand it builds up huge stresses and can explode like a small grenade!
Also, could you please suggest what components I might have killed on the small yellow welder using a 4mm rod 😆
I bought it after seeing your fantastic video on it and had a lot of fun with it before accidentally killing it.
It would be a big concern with a crucible full of molten metal, but not with the amount of heat energy that the usual weld spatter can carry with it. It's certainly enough degrees C, but not enough Joules of energy to cause a big explosion that would be life-endangering. But you can still damage (spall) the concrete and make it look ugly, or end up with small bits of very hot concrete in your eyes or making an unsightly burned hole in your hair.
@@kfoltman just depends on the concrete too. Concrete with pockets of rocks can surprise with the size of crater left behind. But kill? Not normally. It's just ugly and can ruin your driveway.
Yes, the moisture in concrete will turn to steam and explode. I know a fellow who ended up in the hospital from welding on concrete.
It depends! You can tell what went wrong by dismantling the welder machine on the workbench and starting your diagnose. I would check the 1. bridge rectifier, 2. the IGBTs, 3. the schottky diodes. You can also check the auxiliary power supply, if you're lucky, this ic LNK626 or any other TOP switch ic like TNY280 depends what welder you have etc. gets damaged and once the auxiliary power supply is defect the whole appliance stops working. Have you got a schematic for it?
@@tr_2sc1970 I know, I once repaired one with a defective PCB (broken PCB trace from being moved around a lot) on the aux power supply board. But it is a lot more intimidating, many things were totally new to me.
Thankfully there are schematics of similar welders online, so it's easier to understand what is supposed to be happening. Interestingly, many of these schematics seem to have been created in Russia or maybe some other Russian-speaking country.
Impressive!
Now is the time to increase efficiency by implementing a synchronized rectifier on the output side.
Thanks
This is also sold under mastercraft. They charge like 300$.
Do you know what model number MasterCraft lists it as? I would love to be able to make the comparison. BTW if anyone can suggest an affordable option to produce a "spool gun" that I can use on my Lincoln Wirefeed welder in place of the SG100 that Lincoln markets for this unit, specifically the Lincoln 180HD Wirefeed, I desperately need to have aluminum welding capabilities and I even have the argon gas tank prefilled etc I just ran out of money before I could afford to invest in the spool gun so I'm definitely interested in any input or suggestions to produce one myself from available and affordable components from the aftermarket. Thank you in advance and I very much enjoyed the video and encourage you to produce more like it and definately the larger model you spoke of!
Hello
Please make Lab Powersupply
Using TL494 🥺
i love doing electronics projects. i wanted to learn more from your channel. thank u for sharing.
What's good for the goose is good for the gander :)
This video should be titled "STEALING BACK FROM CHINA - Again!" ... ;) Great JOB!
Nice project.
Any chance for a 1200W 110V sine-wave AC inverter using the $10 cheap EGS002 EG8010 + IR2110 + LCD modules?
👍
This is a great video! Waiting for the auto inverter now, good luck with that project!
So cool. I would love a welder with more modern controls. Much like lab power supplies, until recently they have all used outdated interfaces. It should even be possible to turn it into a 5 in 1 multi-welder using an ESP32 to drive a wire feeder for mig welding and gas solenoid valve for tig. The microcontroller could also allow you to set pulse timing and ramps using the PWM output, which are important for tig welding. It would only add maybe $30-40 to the cost between the ESP32, solenoid valve, wire feeder, connectors and display.
How about a series where every video adds a new feature to the welder? Adding mig in one episode and tig in another, and a mini compressor for air plasma cutting in another.
I am curious how you can reproduce features like arc-force, etc. And have always wondered what they actually do on a component level.
Still need help?
@@wertiaaudit5746 Not help its just a mild curiosity.
Ive been waiting for this project. Thanks a lot your work has been a lot to me , your explanations are good.
Ok
Can anyone remember when welders were just a big transformer ?
What's with all the chips ?
I remember
It will be really usefull if such device can be used for battery charger/maintainer where more than 80 amps are required.
Could you please make a video showing how to lower the output voltage to ~14.8-15v and keep the high current?
No
I love your open source approach. Please go on like this...
I wanted to use one of these welders as a power supply for an induction heater project, but I’m not good enough with electronics to adapt it. The voltage drops too far when the induction heater switches on. Maybe if I watch a few more of these videos I might get some ideas.
It would be AWESOME if you made a course on welding inverters, explaining every little detail and component
Wow!!! impressive The dedication is tremendous.
Yep
Thanks, pls go on in this amazing project.
I am shure it will be a wonderful DIY welder
Well done. A very thorough description.
Bet?
Have you ever tried resonant topology for the welding instead this hard switching welder,it has more power density and reliability than common inverters
I m eagerly waiting for dip version,....thanks for ur rigorous hardwork
great project, can i use for induction hardening metal?
Idaq
i have been waiting for this video, since the part one was released ¡¡¡ So much thanks for your work !!! You are amazing
Can you manufacture this unit for sale to us? Add switchable 120/240 input with settable current max inputs to allow matching the AC breaker rating available. The welding performance would then depend on the AC circuit available wherever you are using the unit.
No
Where is the soft-spoken KASYAN lady? I miss her! 😉
I want to do something like this but with the BST-863 soddering station. Looking forward for the bigger version!
Amazing work!! Well done! 👍
Wish someone was able to make one of these budget welders with actually good parts. Seems like so many of them don't work or you can run a 2in bead before it cuts out
I agree, better make a custom welder, robust parts, room for enough ventilation, development and improvement.
I kenpt getting this video recommended to my home page for a week I didn't know why, so I decided to watch it anyway I was not disappointed. THX RUclips
My man didnt just take the design of a chinese Welder. Dude just YOINKED the whole design and traced it. Respect
This project is very clever, please keep going with a more powerfull model !
Very educative video,but what might be the fault if an igbt keep shorting after replacement
@5:40 I have a Dr Meeter bench top ps and it just quit working one day with very low hours and power usage. I can't figure it out as all caps are good and no visible burned our resistors or transistors. I even took out 3 of the transistors to check. Anyways I'm stumped so this part may be my answer. I wish wasn't such a noob. I got all the stuff for learning purposes and now can't do much. So I'm on a mission to build everything my own.
You're gonna make transistors from [insert patented method] in your microwave to purify and set frequency (aka from scratch). I don't think the FCC would like that, they would know
Nice work.. I would love to see your final welder that you have talked about..
Well done very impressive, I wish I had the understanding of electrical components you have 👍
I don't know why I find it funny. Nice project!!
Informative and precise. Well done 👍
Thank you. I found your video informative on the design function, the circuit operation, your adaptations, and your potential redesign. Please keep it going. Kudos for your hard work. I have learned that most of the welders from China have economizations in the oddest places. Those economizations have the effect of limiting functionality in many ways. Have you considered doing the same on a TIG welder? Tell me what equipment you have, how you got started, your education, and what you do for work. Great job!
hello Sir, great work. I would like to know the test procedures you carried out before giving the igbt complete 310 VDC. I mean did you gave igbt's less voltage at first to test whether the switching and current feedback is working correctly or did you just directly gave the inverter the entire dc voltage and started the inverter. If you do know a method to test without giving the igbt's the entire voltage, please let me know.
@1:50 is why no country should ever export over seas. Each continent should have its own manufacturing centers for all products. It wouldn't be that hard to do and it would make life simpler. That's just fact. If over seas shipping occurs its simply a one off custom job.
Then file a land patent in the u.s, get resources and manufacture them yourself while being LAWFUL
I think he is in Russia, Russia leader invaded Ukraine, going to be bad times in Russia for a while :(
PS I would love to see the next bigger better version of this you have in mind. Keep up the good work!
Great work as always !!! Now u have lightweight-welder, u must cut-down on the welding-cables-length... ;-)
Excellent video! Thanks a lot for your time, effort and sharing. Greetings from Argentine.🙌🏻👏🏻👏🏻
Hi, could you please explain the design decision in high end expensive welders to use single IGBT module that contains as many as 12 IGBT integrated within the module? is there any other benefit aside from compactness?
Realy nice build if you can make the voltage controlabil you coud make it in to a mig/mag inverter!
Thanks for your contribution 👍
So you remove all of the components from the pcbs, and photograph them and do a new layout? I am not familiar with Sprint - layout. Do you import the .BMP and put the layers on the top? I am assuming it is a 2-layer board.
China is one hell of innovative tool master & manufacturer who've serviced billions of lives globally, quite grateful about that. Copying is a sincere act of flattery!!! China 💪💪
can the pwm be used for electric welding junior high school with full bridge topology.. if possible.. what should i change in this pwm sg3525 thanks
NOOOoooo.... We need shipping to be more expensive from China. Buy local. At least local companies don't want you to die. Stop funding the Chinese who want to use any funds we provide them against us. I want friendly companies / countries to supply me with parts.
Baja california
great video , but what is the voltage at 110A (max. Amp)
😁👍
This is just wonderfully done. Kudos for the good work and stay motivated, we are right by your side.
That little inverter cranks out well
Thank you for the this fine video! The concept 'stealing from china' is by it's self interesting, but you
actually copy the product (no mean task) and evaluate the products strengths and weakness, and
then address ways to improve it. All in a very clear and concise, well presented, professional manner.
I w[ll have a look at your archive and subscribe. Well done!
'
I have had PCBs made for me by JLC PCB before and I was impressed by the high quality PCBs they sent me.
Me pregunto si se podría aprovechar como fuente de poder para un equipo de audio. Por cierto, excelente trabajo. Se aprecia el esfuerzo y el tiempo dedicado. Saludos desde Argentina
thx for sharing your projects
wich welding machine you made you prefer, the one with sg3525 or the one with uc3844 ??
The custom boards are also made in China
Definitely waiting for updated and more powerful version
There already is on Google patents
Simple and beautiful, better than a Miller at half the price.
Please explain what the duty cycle is when there is no load on. . ./ . . . standby I use this scheme. but the igbt and mosfet get hot and explode in 15 minutes without any load.. Thank You
Absolutely brilliant work
For sure make bigger 200 amp version, great job with this one. Very patient and good with electronics
Why stop at 200? I wanna see him build a 400 amp machine lol
Excellent project 😍 Please make a video for the MPPT charge controller.
Ok
Very nice! And such a compact size.
You did a great job on the engineering. And your welding is pretty good. Thank you for the video!
will be the additional future control boards compatible with original welder?
Cool project !
What is switching frequency of such igbt devices
Could you reverse engineer a 3phase PV-grid Inverter or an Island version. MPPT
There is is currntly a shortage for them.
Muy buen trabajo, saludos desde Argentina.
Great job. I look forward to the next project.
I love these "Stealing from China" videos. Many objectors don't realize that many, but not all, China products are commercialized amateur community, and opensource, projects. So reverse engineering these useful but simple electronics, and sharing it within OUR community, is alright by me. As for those who unsubscribed, do you think maybe, this guy isn't in support of Ukraine war, and has to be discreet with what he says? Or do you really think HE deserves YOUR abuse?
I also love stealing from China too bro.
Nice China brand is Applewei.
Or that Ukraine war might be a holy war or something like this? It's only brainwashing. Did anyone actually made the effort to find out what it is happening there and for what reason and who is to blame? Whatever media is telling us it is and always was a lie used for someone's purpose.
There's no one objecting it's all in your head
I love doing reverse engineering, however sometimes I ask my self ! Why I'm I doing that ? I'm working hard, spending alot of time and money ! For absolutely no profit ! The only consolation I get is the joy when you find out at the end that your copy works fine just like the original one ! That feeling is something you cannot buy with money !
Well done! Keep going and make it better please.
Good Stuff Buddy. What a wonderful time consuming, all encompassing greatness that we share to be as good as we can be.
I am always fascinated by electronics and how and why they work as they do....Great job in presenting this video..Many more in future, please.
This is neat but what exactly is it for? So we can build our own for cheaper price something ?
Huh, so thats how they work! I love your videos, I'm using them to learn power electronics and see how these devices function.
Odd question, but what about making a DC arc welder? I ask because I considered buying one from a government auction, a Lincoln 250MK that makes it's DC wave by using a brushed motor. Have you ever heard of that?
Patents are a good start to learn
Cheapest way to make high current output with rugged design etc is to use an ac motor to drive a brushed dc motor in reverse or as a dynamo
Waiting for IGBT base Three phase Induction heater for more than 15 Kw.....hope these will be delivered at here..
More than 15KW ? Are you on the industrial power grid?
I would love to see you take this project to make the Lamborghini of top end product, still on the small portable scale of a home user product but with all the features of the best commercial units. This is the first video of yours that I have seen, liked and subscribed! Good job man 👍🏼
This is so fascinating to me. I wish I would have paid more attention in school. I didn't start being Interested in this like this until now
Very inspiring. Thank you.
Excellent 👏
❤❤❤excellent can you add a more clear circuit diagram...keep going on for the best thank you so much
What's the name of the song that plays in the beginning?