$14.99 72v Sunwin Controller

Not sure why i didnt notice this before, but things are even more interesting based on this discovery. There are four solder pads at the front edge of the pcb that are labelled 84v/72v/64v/60v. There is another pad in that area that has a 0ohm (just a short) across it's pads, so i'm guessing it's only a matter of soldering across the pads to adjust the LVC. Anyone confirm this? Look at the second pic below for the pads i noted.

It's beginning to look like this could be an 18-fet, multi-voltage, controller for under $25. Of course that doesnt take into account the cost to replace the fets with something higher voltage.
IMG_0608.JPG
IMG_0616.JPG
 
Whats more interesting is that the PCB when googles appears to be for sale?
Homebrew controllers?
http://detail.1688.com/offer/37024293328.html
 
Whats 32 Yen in USD? LMFAO $0.26, what a score of a find!!!! But I hear watermelon is $20+!!!!
75V and 100A that is amazing, plop out those MOSFETS for better ones and we are set!!!!

Where and how does one go about buying matching MOSFETS?
Im used to 4110, so I think 4115 is better, so the higher the number the better.

I am buying one fore sure!!!!

FYI - hksunwin's selection of controllers from ebay store
eBay user: hksunwin (9049) 99.7%

So the assumed consensus is that all these controllers are the same, but with changed/modified components on the inside, whether its jumpers, fattened rails, and most likely just generic china parts.
 
I wanna hear about this sine mod. Perhaps we get a custom ES batch made
 
Anyone know why they won't ship to the UK? I've asked them the question.

Anyone prepared to have one shipped to them in the US and then ship it to me in the UK?
 
Can anyone read Chinese? The comments on this diagram may hold some valuable info. The areas I circled in red specifically:

2484693351_1604394045.jpg
 
If no one can translate, then you would need an O.C.R. (Optical Character Recognition) program, I delved into that around 2001 for a few months, so I am sure there are way better programs out there now, maybe even some free ones.

The thing I noticed with that ebay store and the controllers, is that they range from $20 to $50, and from 60V 800W to 72V 2000W, if its just a few parts soldered in or moved on the PCB, then its purely a marketing gimmick. I am very tempted to go ahead and buy one, its just which one. I will wait a bit longer and see what more information can be had.
 
I think we've uncovered something here - a DIY PCB that companies can populate with their own components. Thats my bet.
Maybe i should order the naked board and see what comes in the mail.
 
Mentions NCE80H16, here's the datasheet. Its a mosfet.
http://www.alldatasheet.com/datasheet-pdf/pdf/679054/NCEPOWER/NCE80H16.html
 
Now with engrish
https://translate.googleusercontent.com/translate_c?depth=1&hl=en&ie=UTF8&prev=_t&rurl=translate.google.com.au&sl=zh-CN&tl=en&u=http://detail.1688.com/offer/37024293328.html&usg=ALkJrhjnk4d7-bQ-D3NlkqGSU61NcqpF8A
 
Sorry for all the posts.

I kept mashing the "Next THing" button and eventually got this 15FET sine wave product. Hows ya mum?
https://translate.googleusercontent.com/translate_c?depth=1&hl=en&ie=UTF8&prev=_t&rurl=translate.google.com.au&sl=zh-CN&tl=en&u=http://detail.1688.com/pic/521358219422.html&usg=ALkJrhggga8kDDcSehzIrfyqaCoL0GA70g

There's even a 6 fet sine board
 
That 1688.com site also show PCBs for a 24fet 4kW, a 30fet 5kW and a 36fet 8kW controller. If those are as underrated as the 15 and 18fet controllers we're playing with now, they could be good for north of 20,000W
 
"I will take the 36FET Sunwin and a QS205V3 to go, please... and an order of fries."
 
Yes this indeed looks like a score for us electric hobbyists.
Just have to wonder what the MOQ is with those boards.

Yeah, we should order some!!!!
 
Holding off until CNY is over - they should be back in two weeks.

MOQ says 3 pcs.

Note the currency is Chinese Yuan, (RMB) not Japanese Yen
 
Wiki says Feb. 8 the Monkey is over with.

1 Chinese Yuan is still $0.15USD, but good catch.
Whats 32 [strike]Yen[/strike] Yuan in USD?
Click to expand...
1 Yuan = $0.15USD so 32 Yuan is $4.80USD still a very reasonable price.

Well put me down for some, if ya plan on doing a group buy or whatever. I've had my fill of listening carefully on the telephone to people from overseas.
 
Same. Got some garbled emails back from them. Will keep yall posted!
 
Suggs said:
Anyone know why they won't ship to the UK? I've asked them the question.

Anyone prepared to have one shipped to them in the US and then ship it to me in the UK?
Click to expand...

Looks like they will ship to the UK but only on the Buy it Now auctions.

This is interesting......... variable LVC
http://www.ebay.co.uk/itm/48V-72V-1000W-Brushless-Motor-Controller-Electric-Bicycle-For-E-bike-Scooter-/391045522309?hash=item5b0c212385:g:rcMAAOSwmrlU0IgY
 
FYI - I borrowed a friends Lyen controller, which is based on the Infineon boards and opened it up. It uses the same mcu as these Sunwin boards! So from what I can find, the Infineon, Grinfineon, Lyen and all these newer Sunwin controllers use the same chip. We know that the Infineon and Lyen controllers are programmable via TTL, and the TTL pads are labelled on the Sunwin boards also.

Here's to one of you adventurous types that tries programming one of these!

FYI- the specific chip on the Lyen controller is gpm8f3108a and the one on the Sunwin controller is gpm8f3116a. According to the spec sheet, which is the same sheet for both chips, the only difference is one has 8k memory and the other has 16
 
Seems to be a higher speed RISC processor in the sine wave versions.
 
BSATOM said:
Another cool thing is that the main chip is a GPM8F311A (link 2 is to a download page). When looking at page 94, it appears that I can directly drop in the GPM8F3132A and have sine wave output to the motor. I need to read more to see if any other circuitry would be needed for the sine wave mod. This controller was 23 bucks delivered, and makes a great starting ingredient for a modified controller.

http://www.ebay.com/itm/391189152892?_trksid=p2057872.m2749.l2648&ssPageName=STRK%3AMEBIDX%3AIT
http://www.datasheet-pdf.com/datasheet/Generalplus/925188/GPM8F3116.pdf.html
Click to expand...

Please do read more on this, if it can be modified to a sinewave signal, and still be programmable with no more then a chip replacement then that is great news. My guess is it would need more circuitry added to it, or other parts taken out and different parts put in. My electronic days have long past, it does not float my goat.

I am thinking about buying the 60V 800W model, I will snap pictures myself of the internals for you guys. I could spend a little more but I think if we can compare 2, 3 or 4 of these controllers at different vendor ratings and see whats going on will be good for us.




https://translate.google.com/translate?depth=1&hl=en&ie=UTF8&prev=_t&rurl=translate.google.com.au&sl=zh-CN&tl=en&u=http://detail.1688.com/pic/521358219422.html
[15] sine board electric vehicle controller board 15 sine Board semi-finished program
Electric vehicle controller board _ Big 24] 4000W_48V ~ 96V Universal _ Wuxi innocent Technology
Electric vehicle controller board _ Big 30] 5000W / 6000W_ power Kuju / electrical motorcycle type
 
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