Sold/Expired FS: Microprocessor controlled drivers

[vanenkelen]

Re: Microprocessor controlled 4-mode driver boards

I would be very much interested in both one AA-no strobe driver and one 3,7v Li-ion no-strobe driver!

Great project! I've been searching for "affordable" drivers like these for a long period..

 

[RV7]

Re: Microprocessor controlled 4-mode driver boards

Wow, great progress !!! :twothumbs
I do have several more questions:

1) How much is the current-draw from the 1AA NiMH board ? (100/70 x750mA ?)
2) Can I also offer the 1AA NiMH board in 350mA version (or swap resistor ?)
3) You said: "Safe to use with unprotected batteries". Please explain
how the this works, or what happens.
4) What does the "14mm diameter x 2.2mm tall PWM only" board do ?

Thanks for everything !
BTW: Interested in at least 4 boards. Answers will determine my final choice...
Cheers !

Answers:

1. Current and voltage at both LED and battery (measured under load) are used to calculate efficiency. The answer is 3A. Incredible? Don't worry, almost all NiMH can handle this, although I do recommend higher capacity ones (>2000mAH). Since this is a multi-mode driver, you can pick a mode you and your light are comfortable with. When some bully shoot his big torch at you, thinking you're just holding a little toy, switch to high mode and blind him! :devil:

2. The AA design is to achieve high output while maintaining good efficiency, and that's what differentiate this board from the crowd of 300mA ones. Don't forget it's multi-mode.

3. A Li Ion battery is considered over discharged when its voltage drops below 2.8V. The driver virtually stops at around 3.1V so it won't over discharge the battery.

4. It's the processor unit and the MOSFET gate, which can be used to control drivers.

 

[RV7]

Re: Microprocessor controlled 4-mode driver boards

Kevin, unfortunately the 3.7V board won't work with 3.0V batteries.

 

[RV7]

Re: Microprocessor controlled 4-mode driver boards

Yellow, most people voted for "remember last setting". When this sale is over and you're happy with your testing results, probably I'll program a few without the memory feature for you.

 

[kevinm]

Re: Microprocessor controlled 4-mode driver boards

Drat! Okay, PM incoming...

 

[X_Marine]

Re: Microprocessor controlled 4-mode driver boards

I would also be interested in a memory-less w/strobe, start on Hi, ver.
I still haven't seen a price but may like a cpl.

ThanX
X..

 

[Erasmus]

Re: Microprocessor controlled 4-mode driver boards

Some questions :
1. Will there also be a 2AA NiMH board available?
2. How does the switching between modes work?
3. The PWM module will work with all kind of drivers, like for example the MillerMods 2AA NiMH 700mA driver?

 

[PhotonAddict]

Re: Microprocessor controlled 4-mode driver boards

That would be my preference as well, too bad there won't be any in the first batch. I'm still very interested in seeing how it turns out though. Like Erasmus, I'm also interested in hearing more about the PWM module as well as hoping for a 2AA version eventually.

I would also be interested in a memory-less w/strobe, start on Hi, ver.
I still haven't seen a price but may like a cpl.

ThanX
X..

 

[RV7]

Re: Microprocessor controlled 4-mode driver boards

Answers to inquiries above:
-Mode switching is explained in Edit #2 in the first post. Basically it's like the Rexlight logic, except that the hated 5 second wait is reduced to 2 seconds.
-When time allows, I'll work on a 2aa/3.0v driver.
-The PWM module provides a MOSFET switch that's controlled by a processor which can be programmed. If that means little to you, then I would not recommend you to buy it separately. I haven't seen a MillerMods driver yet so can't say for sure. But theoretically the module works with most drivers.

 

[joedm]

Re: Microprocessor controlled 4-mode driver boards

questions about the strobe..
what output level will the strobe function at or does this not matter?
And whats the runtime based on the strobe and a 14500/AA?

 

[RV7]

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.

 

[kenster]

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

 

[kabkbak7321]

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

 

[larryk]

Re: Microprocessor controlled 4-mode driver boards

I would be interested in a few AA and 3.7 volt boards. Any configuration.

 

[Aphi]

Re: Microprocessor controlled 4-mode driver boards

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

 

[RV7]

Re: Microprocessor controlled 4-mode driver boards

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

 

[Minjin]

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.

 

[dmprice79]

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

 

[mmmflashlights]

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?

 

[RV7]

Re: Microprocessor controlled 4-mode driver boards

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