FatFlex Prototype
- Thread starter georges80
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georges80
Flashlight Enthusiast
Fatflex was pushed down the 'priority' list due to other work. I hope to get some time within the next couple of weeks to finish up the testing. It had one 'feature' that I now have a good idea of how to fix. If that pans out, then production boards could be in hand by mid June.
george.
george.
wquiles
Flashaholic
Sign me up for these - I am ready to buy at least two of these Fatflex beauties /ubbthreads/images/graemlins/smile.gif
Will
Will
Darell
Flashaholic
I'm struggling to keep up with all the latest goings on, here!
If this will primarily be used in a flashlight, then UI1 is for sure the answer here. As far as I'm concerned, the nFlex code is really aimed at fixed lighting - where it works great.
If this will primarily be used in a flashlight, then UI1 is for sure the answer here. As far as I'm concerned, the nFlex code is really aimed at fixed lighting - where it works great.
mobile1
Flashlight Enthusiast
Well I take 3 of those... have a couple of mods that are just waiting for that board...
Neg2LED
Flashlight Enthusiast
LH UI1 is good idea!
i would LOVE one of these boards. Finally, i will be able to build my CopperTubeLite with the functions i want!
neg
i would LOVE one of these boards. Finally, i will be able to build my CopperTubeLite with the functions i want!
neg
Biggimo1
Newly Enlightened
So whats going on with this board? I have seen nothing about it on the Task Led site. I want one or eight of them. This looks like a great caving headlamp board.
I used nFlex on my last headlight and really liked the momentary switch control. and now I have some waterproof ones to play with /ubbthreads/images/graemlins/buttrock.gif.
I used nFlex on my last headlight and really liked the momentary switch control. and now I have some waterproof ones to play with /ubbthreads/images/graemlins/buttrock.gif.
georges80
Flashlight Enthusiast
[ QUOTE ]
Biggimo1 said:
So whats going on with this board? I have seen nothing about it on the Task Led site. I want one or eight of them. This looks like a great caving headlamp board.
I used nFlex on my last headlight and really liked the momentary switch control. and now I have some waterproof ones to play with /ubbthreads/images/graemlins/buttrock.gif.
[/ QUOTE ]
Psychic eh? I JUST (no kidding) finished assembling a new protopcb (I'll post photos later today). I also JUST (lunchtime) bought a programming clip to allow me to download the firmware without needing a header on the board etc. So, I am working on it and it will have the new firmware (like I just posted on the UI nFlex thread on this same forum).
george.
Biggimo1 said:
So whats going on with this board? I have seen nothing about it on the Task Led site. I want one or eight of them. This looks like a great caving headlamp board.
I used nFlex on my last headlight and really liked the momentary switch control. and now I have some waterproof ones to play with /ubbthreads/images/graemlins/buttrock.gif.
[/ QUOTE ]
Psychic eh? I JUST (no kidding) finished assembling a new protopcb (I'll post photos later today). I also JUST (lunchtime) bought a programming clip to allow me to download the firmware without needing a header on the board etc. So, I am working on it and it will have the new firmware (like I just posted on the UI nFlex thread on this same forum).
george.
georges80
Flashlight Enthusiast
Ok, latest assembled pcb proto of fatflex.
Top view:
Bottom view:
Next I have to download the firmware (new UI1 style - operating features/manual will be very similar to nFlex UI1 manual - of course FatFlex is Fatman based - so it is a BOOST converter so ignore the 'electrical specs' of the nFlex UI1 manual.
Then testing and beatings commence /ubbthreads/images/graemlins/grin.gif. So, shouldn't be too long before I can commit to a production PCB run.
george.
Top view:
Bottom view:
Next I have to download the firmware (new UI1 style - operating features/manual will be very similar to nFlex UI1 manual - of course FatFlex is Fatman based - so it is a BOOST converter so ignore the 'electrical specs' of the nFlex UI1 manual.
Then testing and beatings commence /ubbthreads/images/graemlins/grin.gif. So, shouldn't be too long before I can commit to a production PCB run.
george.
wquiles
Flashaholic
Excellent job George - thanks for the update /ubbthreads/images/graemlins/smile.gif
Will
Will
Neg2LED
Flashlight Enthusiast
hmmmm.... nFlex²? Fatman²? Fat²?
F²?
just a few interesting names....
also,
MESA WANTY!
i would like one...
neg
F²?
just a few interesting names....
also,
MESA WANTY!
i would like one...
neg
mobile1
Flashlight Enthusiast
very nice - good to see that you are maaking progress. Any ideas of the diameter this driver will have?
If there is a possibility to increase the mA to 1500, this driver would be very interesting for the upcoming K2 Led. Any chance that the production version can handle 1500mA?
If there is a possibility to increase the mA to 1500, this driver would be very interesting for the upcoming K2 Led. Any chance that the production version can handle 1500mA?
georges80
Flashlight Enthusiast
[ QUOTE ]
mobile1 said:
very nice - good to see that you are maaking progress. Any ideas of the diameter this driver will have?
If there is a possibility to increase the mA to 1500, this driver would be very interesting for the upcoming K2 Led. Any chance that the production version can handle 1500mA?
[/ QUOTE ]
FatFlex is based on Fatman - so same electrical drive characteristics. 1500mA is pretty tough for a boost driver (especially a small IC with the switch elements internal). The bigger the voltage delta (in vs out), the great the input current that has to go through the switch element. Easier to do a high power buck converter. Also, at 1500mA out, the input current to a boost converter is going to be high enough to freak out small li-ion cells.
FatFlex is the same diameter as Fatman.
george.
mobile1 said:
very nice - good to see that you are maaking progress. Any ideas of the diameter this driver will have?
If there is a possibility to increase the mA to 1500, this driver would be very interesting for the upcoming K2 Led. Any chance that the production version can handle 1500mA?
[/ QUOTE ]
FatFlex is based on Fatman - so same electrical drive characteristics. 1500mA is pretty tough for a boost driver (especially a small IC with the switch elements internal). The bigger the voltage delta (in vs out), the great the input current that has to go through the switch element. Easier to do a high power buck converter. Also, at 1500mA out, the input current to a boost converter is going to be high enough to freak out small li-ion cells.
FatFlex is the same diameter as Fatman.
george.
georges80
Flashlight Enthusiast
Got the firmware downloaded (same as the new nFlex UI1). All seems to be working well at this stage - now the serious beatings must commence /ubbthreads/images/graemlins/grin.gif
FatFlex on dim:
and FatFlex on medium:
I tested the sleep current (electronic off) and I measure <25uA - so a battery will last a long time on sleep. 25uA x 24 * 365 ~ 220mAHr in one year of 'standby/sleep'.
george.
FatFlex on dim:
and FatFlex on medium:
I tested the sleep current (electronic off) and I measure <25uA - so a battery will last a long time on sleep. 25uA x 24 * 365 ~ 220mAHr in one year of 'standby/sleep'.
george.
wquiles
Flashaholic
Simply outstanding - great progress report /ubbthreads/images/graemlins/clap.gif
Will
Will
Christoph
Flashlight Enthusiast
/ubbthreads/images/graemlins/popcorn.gif /ubbthreads/images/graemlins/bowdown.gif /ubbthreads/images/graemlins/happy14.gif
AuroraLite
Enlightened
Most excellent! Paypal ready! /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/popcorn.gif /ubbthreads/images/graemlins/thumbsup.gif
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