East-92 4amp 17mm driver

This was with the driver from FT, right?

https://www.fasttech.com/products/0/10001752/1127405-3v5v-5-mode-led-flashlight-direct-drive-driver-cir

?

Thats it!

Thanks for the confirmation. I’m ready to order a couple from them, but I posted on a ticket asking which shipping method they suggest at this point, as I don’t want to end up with two orders being stuck (already have one that hasn’t move in almost 2 weeks).

Thanks again,
Jim

Hyprmtr,

BTW, you also have modes with that driver, right?

They say there its not the 4-amp version though, only just above 2 amps.

Yes it does have hi-med-lo-stobe-sos.

It looks like they will soon be out of stock agian if everyone orders! Haha!

Ken

Okay, if you dont believe me, there will be more for the rest of us! :smiley: Use a good quality battery. Thats all I have to say. Its direct drive in high mode. That should have told me to use a high discharge battery in the beginning. You cant use a recycled battery and expect good output in DD.

Ken

You can test for direct drive or not direct drive easy enough, just jumper LED- to BAT- and see if current increases. (or LED+ to BAT+, some drivers do it opposite)

They added that note when they stopped carrying the East92B driver a couple months ago. According to that very same note you shouldn't be able to buy the 2A version. They shouldn't have brought the driver back unless it's direct drive again, and they did, so it should be direct drive, and the first test supports that. This is great news even if it does have blinkie modes.

They also say a 200 lumen flashlight is 1000 lumens. :bigsmile:

I guess the opposite applies here. You know whats going to happen, you guys are going to order these and they will be 2A versions. Lol. It would be my luck. At 3.00 each its worth the risk if you ask me.

I will test all 20 that I ordered today when I get them. With a quality 18650.

Ken

Don't just check the current with the driver, also measure the current of the same cell on the same LED without the driver. Even if the driver does 4 amps that doesn't mean anything, if the same cell & LED does 6 amps without the driver in the circuit then the driver isn't DD on high.

The description on FTs page is kinda contradicting. They have the warning, but they also have the product in stock. Why not remove the warning if its the proper DD version?

Even when FT said they had the proper DD version several months ago, they didn't. No trust in FT from me when it comes to these types of things.

Im not tempted to order any more of these until its properly verified its DD and they deliver the correct product consistently.

+1

i wish they would remove those annoying blinkie modes on all of them. (or atleast make the epeliptic-siezure modes hidden. )

Does anyone know what the MCU is on this driver board?

Will do. Probably in about 3 weeks if I’m lucky. The wait is horrible! The 4 that I got in Aug did prove DD in hi.

Ken

I kind of agree. If the driver they’re currently stocking is truly DD, they should remove the warning (and others, and I have asked them to do that on their forums) and replace it with some new test results. So far, every driver (not many, but a few) that I’ve ordered, other than the 7135 ones, have not met their own specs.

Then again, I do believe what Hyprmtr (also on the FT forums) posted, and I want the working driver, so I’ll place an order for a couple to test myself, as soon as they respond to my ticket about shipping. I would hate to order these, and then have them get stuck in limbo like my current/last order with them.

My last FT order placed on the 5th is as of right now still stuck at 'Acceptance' (HK Post). |(

Why the excitement for a five mode direct drive?

Quite with some chips stacked will give you direct drive on high without blinkies.

You answered your own question, when you said “chips stacked”.

Plus, with the 7135 board, and with stacked chips, I don’t believe it’s “direct drive”.

Aren’t the 7135s current regulators?

So, I think that it’d be more accurate to say something like “if you stack enough 7135 chips, you might be able to get emitter current almost as high as you would with direct drive”.

But then, how many would you have to use to get 5 amps?

If they’re 350 mA 7135s, you’d need > 14 x 7135s. So assuming 8 x 7135 on the original board, need to stack 6 add’l.

If they’re 380 mA 7135s, you’d need > 13 x 7135s. So assuming 8 x 7135 on the original board, need to stack 5 add’l.