RofisLight        
Results 1 to 29 of 29

Thread: Another 7135 Driver Wiring Question

  1. #1
    Enlightened
    Join Date
    Oct 2008
    Location
    Evesham, UK
    Posts
    51

    Help Another 7135 Driver Wiring Question

    I've just received some 5 mode drivers from DX. They are completely different from the other ones that I have used.

    I would be extremely grateful if someone could tell me which of the pads (coloured in blue, green, yellow and red) correspond to LED+, LED-, Battery+, Battery-, and the +ve wire from the 1.4A 7135 board. I've included the picture from Stefan's thread as reference.

    Many thanks.


    Board delivered from DX today:



    Previous Type (Also from DX):

  2. #2
    Flashaholic* CampingLED's Avatar
    Join Date
    Nov 2007
    Location
    South Africa
    Posts
    612

    Default Re: Another 7135 Driver Wiring Question

    My guess, but it will be better if somebody else can confirm:

    Yellow is the centre wire between the two boards (connects to centre of 4 x 7135 board)
    Blue is battery minus -
    Green is LED -
    Red is LED & Battery +

    Please note that this is my best guess based on how I interpret the new layout.

  3. #3

    Default Re: Another 7135 Driver Wiring Question

    What sku number is that ??
    It look like something i could use better than what i have
    There is room for a fourth 7135 that would turn the board into a 1,4 amp (at a small footprint )


    BUT there is a strange thing about the board ?? two of the 7135 is one type but the third is different
    AND in this thread
    http://www.candlepowerforums.com/vb/...=201392&page=4
    http://www.candlepowerforums.com/vb/...=201392&page=4
    They show this

    There was a problem because it is two different 7135`s
    Some 7135/35C
    Some 7135/fu806a


    BUT On your board
    ONE 7135/35E
    +two 7135/0813

    I have two 16 modes with 7135/0813
    I have on my way from DX
    10 x1,4 amp (4x 7135unknown )boards
    +Two 16 modes 3x 7135unknown

    Have any had any luck with mixing the different 7135`s ??

    Just when i thought it was easy
    Last edited by Isthereanybodyoutthere; 12-16-2008 at 01:26 PM.

  4. #4
    Enlightened
    Join Date
    Oct 2008
    Location
    Evesham, UK
    Posts
    51

    Default Re: Another 7135 Driver Wiring Question

    Thanks CampingLED, I will give it a try tomorrow - unless anyone else wants to make any suggestions!!!

    The new DX 1.4A 7135 boards are also slightly different - so I'm just hoping that they work ok together.

    Oh... the Sku on the DX 5 mode 1A boards that I have is 6190 (http://www.dealextreme.com/details.dx/sku.6190). They are still showing the normal ones on a blue board.

    They are currently out of stock - so goodness knows what I have been sent.

  5. #5

    Default Re: Another 7135 Driver Wiring Question

    Quote Originally Posted by PaulH View Post
    Thanks CampingLED, I will give it a try tomorrow - unless anyone else wants to make any suggestions!!!

    The new DX 1.4A 7135 boards are also slightly different - so I'm just hoping that they work ok together.

    Oh... the Sku on the DX 5 mode 1A boards that I have is 6190 (http://www.dealextreme.com/details.dx/sku.6190). They are still showing the normal ones on a blue board.

    They are currently out of stock - so goodness knows what I have been sent.

    Hey thats the same as i did order ,,except i did chose the 16 modes

    You say the new 1,4 amp 7135 is different ??

    Do the 7135`s on the 1,4 amp board have the same name /extension as the 7135`s on your (that arghh has two different)5 mode board ??,,if so they might work together ,,and hopefully mine that is coming to ,,if not

  6. #6
    Enlightened
    Join Date
    Oct 2008
    Location
    Evesham, UK
    Posts
    51

    Default Re: Another 7135 Driver Wiring Question

    Here is one of the 1.4A 7135 boards from DX (received yesterday).

    The 7135 chips are all the L type (whatever that means), which is the same as the multi-mode driver, so I am hoping everything will work together.

    I'll hopefully escape work this afternoon, and be able to get soldering... fingers crossed!

  7. #7

    Default Re: Another 7135 Driver Wiring Question

    Well ,,, i also received my 16 mode 3x 7135 board ,,it should have been two ,,but DX only send one

    BUT to make things more complicated ,my board has two L7135/0813+one 7135/35E

    My two old boards did have 3x L7135/0813

    But take a look at the multimode board in the photo from downloads thread
    It has One 7135/35C and two 7135/38B

    So by now we have
    L7135/0813
    7135/35C
    7135/35E
    7135/38B
    7135/fu608A THAT WAS THE ONES THAT DIDNT WORK WITH THE MULTI BOARD IN DOWNLOADS THREAD

    Whats up with all those different kinds

    I have on order 10X 4X7135 boards from DX ,,i really hope the are like yours L7135/0813

  8. #8
    Flashaholic
    Join Date
    Dec 2006
    Location
    Cajun Heartland
    Posts
    168

    Default Re: Another 7135 Driver Wiring Question

    has anyone figured thid board out? Very aggrevating for a novice modder,
    zero information is available. I'm not an EE (I'm an ME), even if I was I think they should provide at least some type of schematic if they are going to sell a product unwired. It looks nothing like the advertised board either.
    CARPE NOCTEM

  9. #9

    Default Re: Another 7135 Driver Wiring Question

    [IMG][/IMG]
    Here are pics about how it is done. Desolder the chip and the resistor of one board.It works very well.

  10. #10
    Enlightened
    Join Date
    Oct 2008
    Location
    Evesham, UK
    Posts
    51

    Default Re: Another 7135 Driver Wiring Question

    Casebrius,

    Stefan very kindly sent me his interpretation of the new MM driver boards. What type of sandwich are you making?

    Hope this helps.


  11. #11

    Default Re: Another 7135 Driver Wiring Question


    Found a schematic of a AMC7135 on the web and made this diagram.
    Looks like the schematic is not exactly how the 7135s are used on the board in the picture.
    I think just looking at the picture atht the ATMEL chip is driving the 7135's???
    A real schematic of this board from the manufacturer would be the ticket.

    I don't have one of the boards in front of me, they are on backorder and I am still waiting for mine.

    I manufacture electrical items and I always need schematics and technical info on chips, etc. I can't believe DX doesn't have a spec sheet/schematic info tab on all these sorts of devices. Drives me nuts when you are trying to design something and need the spec's of a device.

    Hope everything is correct on my diagram. I'll know for sure when I get my hands on a board. If anyone sees a problem, I'll fix or add something to the diagram.
    Last edited by EL34; 01-16-2009 at 10:35 AM.

  12. #12
    Flashaholic* Moddoo's Avatar
    Join Date
    Nov 2008
    Location
    Minnesota
    Posts
    1,243

    Default Re: Another 7135 Driver Wiring Question

    I just recieved some 7879 boards from DX. (3x7135 stated 980mA output)
    They have the 7135 38B components.
    inital testing with 1 on high mode, with a single 18650, at 4.05V, connected to an R2.
    I am getting only .6A to the emitter, and .6A from the cell.
    direct drive?

    I am new to this stuff, but are the 38B components to blame?

    I hope this isn't off topic.

    I thought I would add to the 7135 data here.

  13. #13
    Flashaholic
    Join Date
    Dec 2006
    Location
    Cajun Heartland
    Posts
    168

    Default Re: Another 7135 Driver Wiring Question

    Quote Originally Posted by PaulH View Post
    Casebrius,

    Stefan very kindly sent me his interpretation of the new MM driver boards. What type of sandwich are you making?

    Hope this helps.
    Thanks. Just using it as a single board to drive a Q5 in an old C2. But if this thing isn't going to drive it sufficiently, I won't bother putting it in.
    CARPE NOCTEM

  14. #14

    Default Re: Another 7135 Driver Wiring Question

    How much current do you get with he same 18650 direct drive ??
    It could be the 18650 that cant deliver enough current ,and not the board
    next measure how many volt runs over the R2 LED when its on (now you know how much the voltage sags under load )+ you know the Fv for the LED for the amp you did measure


    Quote Originally Posted by Moddoo View Post
    I just recieved some 7879 boards from DX. (3x7135 stated 980mA output)
    They have the 7135 38B components.
    inital testing with 1 on high mode, with a single 18650, at 4.05V, connected to an R2.
    I am getting only .6A to the emitter, and .6A from the cell.
    direct drive?

    I am new to this stuff, but are the 38B components to blame?

    I hope this isn't off topic.

    I thought I would add to the 7135 data here.

  15. #15

    Default Re: Another 7135 Driver Wiring Question

    Ok i did just take a look at MY 7879 board
    it is NOT like the one shown here
    the one shown here is a 5 mode and i think the board is a NANJG
    The 20 MODE 7879 is a LOCH board

    And if you look at DX`s 7879 page and at the boar i have they are NOT the same ???

    there is some small differences

    One is if you hold the board ,so that the 8 leged chip is on top
    then look just to the left of it you can see two unsoldered points
    I have NOT made a test with my board ,,YET , but i think those pads/points could be there to be bridged to get number 3, 7135 chip to work

    in other words it could be that the board is a 700 mamp until you bridge those points
    Just like some of the 1400mamp 7135 single mode boards are /was

    Quote Originally Posted by Casebrius View Post
    Thanks. Just using it as a single board to drive a Q5 in an old C2. But if this thing isn't going to drive it sufficiently, I won't bother putting it in.

  16. #16
    Flashaholic* Moddoo's Avatar
    Join Date
    Nov 2008
    Location
    Minnesota
    Posts
    1,243

    Default Re: Another 7135 Driver Wiring Question

    Quote Originally Posted by Isthereanybodyoutthere View Post
    How much current do you get with he same 18650 direct drive ??
    It could be the 18650 that cant deliver enough current ,and not the board
    next measure how many volt runs over the R2 LED when its on (now you know how much the voltage sags under load )+ you know the Fv for the LED for the amp you did measure
    Thank you for commenting on this.
    It seems that I have an emitter issue, not a driver issue.
    on another fresh cell @ 4.1V
    the R2 is pulling .7A direct, and .67A with driver, Fv is 3.9V
    A Q5 that I have is 1.6A direct, and 1.05A with driver, Fv is 3.6V

    I need to test a few more emitters I have here.

    It looks like the 7879 drivers are working fine.
    Here is a pic of one of the 7879s.


  17. #17
    *Flashaholic* kramer5150's Avatar
    Join Date
    Sep 2005
    Location
    Palo Alto, CA
    Posts
    6,328

    Default Re: Another 7135 Driver Wiring Question

    I just got some of these as well... DX:7612, all 3 are slightly different and none look like the ones pictured on DX... LOL.

    Anyways I want to mod 2 of them up to ~1.3A output, by adding a 4th 7135 driver, per the pic below. by transplanting parts from the donor board.

    -Can I just transplant an L7135-0813 from the donor board onto each recipient at "A" and "B"??
    -If I do that, could the donor board still be used to drive a long running low-low output (emergency) type of light?



    Thanks OP for creating this thread, and thanks in advance for all who reply.

    Last edited by kramer5150; 06-10-2009 at 07:43 AM.
    CLICK HERE for my flashlight reviews.
    PAUL KIM... AN INDUSTRY GENIUS

  18. #18
    Flashaholic* Moddoo's Avatar
    Join Date
    Nov 2008
    Location
    Minnesota
    Posts
    1,243

    Default Re: Another 7135 Driver Wiring Question

    Kramer,
    I just had to try it.
    I moved a 7135 from one board to another. like your diagram shows
    (empty spot on my board is in the lower right in my pic)
    It works. 1.37A output.
    The donor board was .7a output afterwards.
    I then removed the 7135 on the right side of my pic.
    Donor board - 0Amps
    I may need to jump something to get it going again.

    FYI, it is really easy to overheat these tiny components with the soldering iron.
    be careful.

  19. #19

    Default Re: Another 7135 Driver Wiring Question

    Yes to both questions Krammer.
    Roland

  20. #20
    *Flashaholic* kramer5150's Avatar
    Join Date
    Sep 2005
    Location
    Palo Alto, CA
    Posts
    6,328

    Default Re: Another 7135 Driver Wiring Question

    Great thanks Gents!! With that 1400mah board always out of stock, this seems like the way to go.

    Next question... can it be modded to run single mode? (Off-High)
    CLICK HERE for my flashlight reviews.
    PAUL KIM... AN INDUSTRY GENIUS

  21. #21

    Default Re: Another 7135 Driver Wiring Question

    It will work if you knock out the chip/ resistors as in one of my pics in this same thread.
    Roland

  22. #22
    *Flashaholic* kramer5150's Avatar
    Join Date
    Sep 2005
    Location
    Palo Alto, CA
    Posts
    6,328

    Default Re: Another 7135 Driver Wiring Question

    Is there any limit to the number of these things you can parallel stack? Is it possible to stack enough of them and drive an MC-E?

    thanks
    CLICK HERE for my flashlight reviews.
    PAUL KIM... AN INDUSTRY GENIUS

  23. #23

    Default Re: Another 7135 Driver Wiring Question

    Roland

  24. #24
    Enlightened dnlwthrn's Avatar
    Join Date
    Oct 2008
    Location
    Chicago 'burbs
    Posts
    52

    Default Re: Another 7135 Driver Wiring Question

    Quote Originally Posted by EL34 View Post
    Found a schematic of a AMC7135 on the web and made this diagram.
    Looks like the schematic is not exactly how the 7135s are used on the board in the picture.
    I think just looking at the picture that the ATMEL chip is driving the 7135's???
    A real schematic of this board from the manufacturer would be the ticket.

    I don't have one of the boards in front of me, they are on backorder and I am still waiting for mine.

    I manufacture electrical items and I always need schematics and technical info on chips, etc. I can't believe DX doesn't have a spec sheet/schematic info tab on all these sorts of devices. Drives me nuts when you are trying to design something and need the spec's of a device.

    Hope everything is correct on my diagram. I'll know for sure when I get my hands on a board. If anyone sees a problem, I'll fix or add something to the diagram.
    I just got one of the boards from DX today, and while it looks to be similar, the layout is different. Just trying to figure out the wiring... EL34, do you have any tips on what I can check to verify things? I have a DMM and really fine tipped probes, just not enough background with these things to know what should go where.

    Here's a photo:


    The two 7135s on top are L7135 0704, while the one on the right is a 7135 35k.
    Last edited by dnlwthrn; 11-20-2009 at 02:43 PM.

  25. #25

    Default Re: Another 7135 Driver Wiring Question

    Use your DMM in continuity mode (where the DMM beeps or buzzes if there is continuity, and no sound for no continuity). You can trace what terminals are connected to what by touching the DMM probes between all of the various connections. To assist in determining what is wired to what, you can also put the driver board on the glass window of a flashlight and backlight the board. The traces should show up dark, and that should also help you trace the connections.

  26. #26
    Enlightened dnlwthrn's Avatar
    Join Date
    Oct 2008
    Location
    Chicago 'burbs
    Posts
    52

    Default Re: Another 7135 Driver Wiring Question

    Cool. The backlighting thing really helps, never tried that before. It appears that (and I just tested it and it works) the + connection for the LED goes to the pad just to the right of the ATMEL chip, and the - LED goes to the pad on the top left (that has a - next to it).

    Now to rewire my light for this board... Gotta drop the Vf to an acceptable range (running multiple red Crees in series right now, ~6.6Vf).

  27. #27
    Enlightened dnlwthrn's Avatar
    Join Date
    Oct 2008
    Location
    Chicago 'burbs
    Posts
    52

    Default Re: Another 7135 Driver Wiring Question

    Ok, new problem... I can't seem to make this work with red LEDs. Running one emitter alone, I have a Vf of ~2.2. The board (for obvious reasons) won't power them when wired in series, and when they're in parallel, it just turns on dim and flashes at a rate of ~.5hz (low power warning?).

    The only option I haven't tried yet is to do a 1P2S setup and try that, but I'm wondering if there's a way to mod the board to work with a lower Vf...

  28. #28
    Unenlightened Tommu's Avatar
    Join Date
    Dec 2009
    Location
    Prague, Czech Republic
    Posts
    5

    Default Re: Another 7135 Driver Wiring Question

    Quote Originally Posted by kramer5150 View Post
    ...
    Anyways I want to mod 2 of them up to ~1.3A output, by adding a 4th 7135 driver, per the pic below. by transplanting parts from the donor board....
    Quote Originally Posted by Moddoo View Post
    Kramer,
    I moved a 7135 from one board to another. like your diagram shows
    (empty spot on my board is in the lower right in my pic)
    It works. 1.37A output.
    Isn't that Atmel overdriven? Could it survive for long time?

  29. #29
    Flashaholic* Packhorse's Avatar
    Join Date
    Nov 2007
    Location
    New Zealand
    Posts
    1,912

    Default Re: Another 7135 Driver Wiring Question

    The Amtel chip does not see any current for the LED's. It simply drives the 7135 chips. It should drive 10 or more 7135's with ease. Maybe 20 or 50. Who knows.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •