Modding NANJG 101 (now AK-A1) 5-mode 1400 mA driver

Blord · Jul 16, 2012

I need your helps guys. I bought a 1400mA driver for my 500mW Mitsubishi diode and DX sent me this driver. It has 5-mode output which I don't like. I have already figure it out to make it Hi/Med/Lo 3-mode but I need just plain single mode 1400mA output. Maybe bypassing the Atmel chip ?
Has anybody succeed to make the mod ?

Modding to 3-mode is connecting the two pins on the lower right of the Atmel chip.

BShanahan14rulz · Jul 16, 2012

bypass atmel completely for 1400mAh.

Blord · Jul 16, 2012

Do you know which pin to connect ? Or just desolder the Atmel ic and connecting all the loose ends.

benmwv · Jul 17, 2012

Make this jumper indicated with the red line:

You could also connect it to the D1 pad directly left to the positive if that is easier.

AnthoT · Jul 26, 2012

benmwv said:
Make this jumper indicated with the red line:

You could also connect it to the D1 pad directly left to the positive if that is easier.

Yup that works Blord, I did that on the exact same driver (but accidentally) & it had no more modes

Blord · Jul 26, 2012

That right. I did the mod and the driver has only 1400mA output.
Thanks for the easy mod.

Btw anybody want to buy these drivers ? I bought 20 drivers and I only needed one

ryansoh3 · Jul 26, 2012

Blord said:
That right. I did the mod and the driver has only 1400mA output.
Thanks for the easy mod.

Btw anybody want to buy these drivers ? I bought 20 drivers and I only needed one

Haha, why did you buy 19 extra? :crackup:

I'd be interested if someone can figure how to increase the output to 1.8A and keep the modes.

Cheers! :beer:

Blord · Jul 26, 2012

You can stack another AMC7135 ic on top of the existing ic for a 350mA extra. Each 7135 counts for 350mA.

DX was only selling in quantity of 20

ryansoh3 · Jul 26, 2012

Hmm... couldn't you have gotten this?

It's 3 bucks and it doesn't have any modes.

Cheers! :beer:

Edit: Thanks for the info. Unfortunately, I'm quite horrible with soldering and don't know much about how to wire it and whatnot.

Thanks though.

AnthoT · Jul 26, 2012

These are not suitable for 1.8Amps with the blue diodes I beleive, these have a voltage drop (very very low) aswell & blues take ~4.5V a li-ion is 4.2V fully charged so it wouldn't work for those... Unless you put 5V in

ryansoh3 · Jul 26, 2012

AnthoT said:
These are not suitable for 1.8Amps with the blue diodes I beleive, these have a voltage drop (very very low) aswell & blues take ~4.5V a li-ion is 4.2V fully charged so it wouldn't work for those... Unless you put 5V in

Ah, gotcha. These aren't able to take 8.4 volts, I suppose?

Cheers! :beer:

BShanahan14rulz · Jul 26, 2012

"6V max"

You can probably take a few diodes to drop voltage, then take that output to power your laser diode and amc's, then drain the laser diode into the output of the amc.

Chip may get hotter than usual.

AnthoT · Jul 26, 2012

unless you find a 4 x AA (1.5V alkaline) host then this is not for 445's

BShanahan14rulz · Jul 26, 2012

Let's put it this way: you can make it work if you already have them, but there are better options.

ryansoh3 · Jul 27, 2012

Hmm... I've been looking for a 445 driver that outputs 1.8A with 5 modes.

Cheers! :beer:

FroyoShark · May 4, 2013

Sorry for posting in such an old thread, but I didn't want to start a new one. Does anyone know how to set this to 2 modes? All I use is low and high, never touch strobe, SOS, or medium...

Modding NANJG 101 (now AK-A1) 5-mode 1400 mA driver

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