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View Poll Results: Which board would you like?

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  • 1AA NiMH with strobe

    33 16.10%
  • 1AA NiMH without strobe

    75 36.59%
  • 3.7V Li-Ion with strobe

    63 30.73%
  • 3.7V Li-Ion without strobe

    78 38.05%
Multiple Choice Poll.
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Thread: FS: Microprocessor controlled drivers

  1. #91
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    Strobe is at full output and 10Hz. Strobe runtime hasn't been tested yet but I think should be well over one hour with both 1aa and 14500.

  2. #92
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    Default Re: Microprocessor controlled 4-mode driver boards

    If you make any more after these without the "remember the last setting" I would be in for some of those.

    Ken

  3. #93
    Flashaholic kabkbak7321's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    I would be in for several if I could find something like this.

    Ok 3.7 lith sounds great but thats what I have for all my EDC's.
    And the 4 mode in 5, 30, 60, 100% sound great as well or just a
    simple 3 mode 25, 60, 100 would work for me also. 100%=900 to
    1100mah for very short bursts.

    I use my EDC every day on the job or at home to the sum of literally
    15 to 30 time a day,never for more than 60 seconds at a time.If its
    more then that I'll grab my goose neck dewalt or a headlamp.

    This remember the last mode used ends up pissing me off 3 to 10 times a day as well,and lets not forget what happens when that useless (for me) strobe kicks on in the dark when you wanted low to save your eyes on close up viewing.

    So my vote is for finex sized board with 3 or 4 mode 5, 30, 60, 100%
    with (no) remember last mode and (no)strobe,(no)sos
    on 3.7 lith. 100% would be nice at 1amp.

    But thats just me

  4. #94
    Flashaholic* larryk's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    I would be interested in a few AA and 3.7 volt boards. Any configuration.
    Collins Dynamics CD-12, CD-12 Magnum, Microfire Warrior, Iluminator HID, Costco HID, ,Maxabeam, Polarian Helios, RayzorLite ,BarnBurner,and a bunch of small lights.

  5. #95
    Unenlightened
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    Default Re: Microprocessor controlled 4-mode driver boards

    I would be interested in the 1 x AA board. Memory mode would be nice.

  6. #96
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    Just an update - The order for the PCBs has been placed!

  7. #97
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    Default Re: Microprocessor controlled 4-mode driver boards

    Great timing. I'm looking for a circuit to replace the one in my Fenix L1P and there is pretty much nothing on the market except the Madmax. Definitely interested. Can you tell me what the minimum voltage is for the normal AA model? I'd like to be able to run alkalines down as low as possible.

  8. #98
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    Default Re: Microprocessor controlled 4-mode driver boards

    I am very interested, I would like 2, 3.7 with strobe. Tell me what I need to do to buy these from you. Thanks

  9. #99

    Default Re: Microprocessor controlled 4-mode driver boards

    If the board with strobe is using 10% at low, I'd prefer the 4 mode/no strobe board. If the strobe board uses something closer to 5% at low, then I'd prefer the strobe board. I'm probably interested in 2 of the 3.7 boards, with the decision on strobe vs. no strobe based on my above comments on how low the lowest mode is (I'd prefer lower than 10%).

    BTW, what happened to the comment on the first post on the efficiency % of the 1.5 board? As I recall, the 3.7 was quite a bit more efficient, but if efficiency is closer between the two than what was earlier posted then I may also be interested in a 1.5 board. Long story short, what is the efficiency % of the 1.5 board?

  10. #100
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    mmm, the efficiency of the 1.5V board can be found in post #66.

  11. #101
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    Quote Originally Posted by Minjin View Post
    Great timing. I'm looking for a circuit to replace the one in my Fenix L1P and there is pretty much nothing on the market except the Madmax. Definitely interested. Can you tell me what the minimum voltage is for the normal AA model? I'd like to be able to run alkalines down as low as possible.
    The lowest voltage I've tested is 1.06V under load. It most probably can work at even lower voltages. I'll find out when I got the time.

    Edit: Just tried 0.9V. No problem.
    Edit: No problem at .75V.
    Last edited by RV7; 07-20-2007 at 04:49 PM.

  12. #102
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    Default Re: Microprocessor controlled 4-mode driver boards

    Quote Originally Posted by dmprice79 View Post
    I am very interested, I would like 2, 3.7 with strobe. Tell me what I need to do to buy these from you. Thanks
    It's not available yet. Check back at the beginning of next month!

  13. #103

    Default Re: Microprocessor controlled 4-mode driver boards

    Looking forward to the 1.5 and 3.7 boards for Arc LS mods. Thanks for offering these.

  14. #104
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    Nightshade, thanks for your interest! I'm not sure but Arc LS's internal space seems pretty limited. I'd suggest you measure its pill to make sure the board will fit.

    Although the 3.7V board could've been made very thin (2mm) using ICs that don't require external inductors, efficiency would suffer. Seeing all my lights from 1AA to 18650 can accomodate a 7mm tall board, I opted for inductor, aiming for optimal efficiency. But again my collection is not too big. So if you have a very compact light, be sure to measure first. Thanks for looking!

  15. #105

    Default Re: Microprocessor controlled 4-mode driver boards


  16. #106
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    Buttrock Re: Microprocessor controlled 4-mode driver boards

    I may not be as knowledgeable as others on this forum - so please correct me if I am wrong:

    - The NIMH driver establishes a new level of performance by delivering 750 milliamps to the LED.

    - The Li Ion board is the first one I am aware of that cuts out at 3.1 volts which allows the safe use of unprotected Li Ion's.

    This is the first Li Ion driver that I have even been interested in. It seems much more elegant to put the Li Ion protection in the driver (and the charger). The other driver I am waiting for someone to design is a 2 NIMH driver that supplies 1 amp. to the LED ...

  17. #107
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    Default

    Flupics also go into direct drive when reaching some 2.9-3 Volts, I tried to run a Li-Ion till the circuit kicks in but to bored about waiting. Seems it also is good for unregulated.

    is a bit of other driver, but also runs a led on a Li-Ion

  18. #108
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    Default Re: Microprocessor controlled 4-mode driver boards

    Quote Originally Posted by BigBoy View Post
    I may not be as knowledgeable as others on this forum - so please correct me if I am wrong:

    - The NIMH driver establishes a new level of performance by delivering 750 milliamps to the LED.

    - The Li Ion board is the first one I am aware of that cuts out at 3.1 volts which allows the safe use of unprotected Li Ion's.
    Hi BigBoy,

    - From what I see, I guess you're right about the NiMH driver reaching a new level, unless someone corrects me. The efficiency is around 70-80%, better than many 300mA 1.5V boost drivers.

    - With the 3.7V driver, the light will dim considerably at about 3.1V but after that there's still a tiny current draw so if you leave the switch on for a prolonged time, the battery would eventually deplete. "Safe" is relative to the kind of DC-DC that squeezes a battery rock dry in minutes. A discussion can be found in post #37.

  19. #109
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    Default Re: Microprocessor controlled 4-mode driver boards

    Quote Originally Posted by yellow View Post
    Flupics also go into direct drive when reaching some 2.9-3 Volts, I tried to run a Li-Ion till the circuit kicks in but to bored about waiting. Seems it also is good for unregulated.

    is a bit of other driver, but also runs a led on a Li-Ion
    I'm pretty new here so didn't really know Flupic until I saw his latest sale thread. Look like pretty decent boards without external inductor - our focuses seem a little different here.
    Last edited by RV7; 06-27-2007 at 06:14 PM.

  20. #110
    Flashaholic* Neg2LED's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    I would like a 1AA NiMH strobeless model if you do a second run.

    --neg
    "Barad-Dur was an inside job. Everyone knows dirty little hobbitses can't melt mithril beams."
    | too many 47s products
    | Mag2D nFlex LuxIII/6AA NiMh Mod (from when that was good) | Absurd Jayrob 5A MT-G2 MagLite | User 4798 |

  21. #111
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    Neg, the sale will begin early next month. Please check back then. Thanks.

  22. #112
    Unenlightened
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    Default Re: Microprocessor controlled 4-mode driver boards

    How far are you with the production? Are you making them yourself? Or did you contract some company to build your design....? Keep up the good work...!

  23. #113
    Flashaholic* StefanFS's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    Do you have a resistor value for upping the max output to 1200 mA with the LiIon boards? Is that possible with your design? Please tell me if it is so I can prepare and get the correct resistors.
    Stefan

  24. #114

    Default Re: Microprocessor controlled 4-mode driver boards

    Can anyone point me in the direction of a 2xAA NiMH 1000mA driver board?? 1xAA or 1x3.7v Li batt doesn't fill needs at this time - although I LOVE the concepts.

  25. #115
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    Hi folks,

    Just got back from Six Flags New England. Lots of fun and what a start for my son's summer vacation! Even Sheraton not offering free internet access was a good thing for me actually.

    Hobbies should be fun too right? Since some ppl are talking about Flupic and I hate to see anyone regret after purchasing my boards, I'd like to offer my opinion: If you want more user control and need the ultra thin form factor, wait for the Flupics. If you want higher efficiency and fool proof UI, mine shouldn't disappoint you.

    Have fun!

  26. #116
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    Default Re: Microprocessor controlled 4-mode driver boards

    Quote Originally Posted by StefanFS View Post
    Do you have a resistor value for upping the max output to 1200 mA with the LiIon boards? Is that possible with your design? Please tell me if it is so I can prepare and get the correct resistors.
    Stefan
    The current sense resistor is 20 milliohm. If you want to decrease output, simply increase the resistor value. If you are to increase output, you can decrease the resistor a little but don't go too far to avoid inductor saturation.

  27. #117
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    Making these boards is taking longer than I expected. Hopefully they'll be ready in two or three weeks. Thanks everyone for your patience!

    Last edited by RV7; 07-25-2007 at 07:42 PM.

  28. #118
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    Default Re: Microprocessor controlled 4-mode driver boards

    Holy 3D PCBs batman . That's a pretty complex layout you've got there.

  29. #119
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    Default Re: Microprocessor controlled 4-mode driver boards

    Looking Good RV7
    Waiting patiently
    Cheers
    Dom

  30. #120
    Flashaholic RV7's Avatar
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    Default Re: Microprocessor controlled 4-mode driver boards

    PA, See the orange cylinder? It should be held guilty for the double deck layout, more material and the hassle to put them together. I wish inductors can be made smaller without compromising performance. The benefit is an efficiency gain of around 10% over LDO/linear. Is it worth it? Definitely for me. Call me a nerd. Will it be popular here on CPF? We'll see.

    I heard all Jetbeam and most digital Fenix lights use twin PCB drivers, though I haven't seen one or a picture myself.

    Oh btw my fellow Canadien, any idea of an economical way of shipping within Canada?

    Dom, thanks and cheers!

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