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Old 01-02-2008, 06:54 PM #1
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Default BLuRay mod #2. *1xAA boost circuit.

I purchased another PS3 module with the intent of putting it into something smaller than my last project. http://www.laserpointerforums.com/fo...num=1194303946 *Ideally, I was looking for a 1xAAA sized package using a boost converter. *I could tweak the 1xAAA drivers to get it to lase but it wasn't bright enough for me. *It didn't help that the Vf of the BLuRay LD was over 5V @ 20mA!

I got the cell charger from a local surplus store. You can Google "Charge2Go" for additional info on the charger.


*Tech Notes*
1. I tried a 1xAA boost circuit from a cell phone charger on three red LEDs connected in series. The output current/voltage seemed just about right so I tried it with the BR LD and measured 33mA (that included a sense resistor and longer wires so I expect the assembled unit's output current will be higher - probably in the 40s of mA). The board has 2 SMD red LEDs that blink about once per second when it is on.

2. There are several variants of this charger. *Other modles use different boost circuitry and will likely not work the same. *

3. My BR LD had a fairly high Vf - a lower Vf LD may have been severly over-driven.

4. The charger had no switch - it was a twisty - not really suitable for a pointer so I had to add a switch (momentary contact). That involved adding a battery contact board to feed a switch. *I have cut down the switch length and I will likely glue on a switch guard ring to prevent accidental turn-on.

5. Current draw from the battery is 160 mA (180mA when the red LEDs blink) so the battery should last a while.

Here are some photos.

Host (Charge2Go cell charger - there are different versions of these)


Driver board (top & bottom)


BR in Aixiz module


Switch epoxied in


BR module added


BR soldered on board


Switch wiring


Battery contact board (goes to switch)


Assembled


Size comparison to iPod Video 5G


Size comparison to 9V BLuRay mod and AA battery


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Old 01-02-2008, 07:15 PM #2
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Default Re: BLuRay mod #2.  1xAA boost circuit.

Looks sweet
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Old 01-02-2008, 09:13 PM #3
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Default Re: BLuRay mod #2. *1xAA boost circuit.

That charge to go unit looks super !! Where do you find them ??
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Old 01-02-2008, 09:27 PM #4
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Default Re: BLuRay mod #2. *1xAA boost circuit.

Quote:
Originally Posted by Hemlock Mike
That charge to go unit looks super !! * Where do you find them ??
Mike
I got them at a Princess Auto store ( www.princessauto.com ) but you could probably locate a US retailer from teh manufacturer's website ( www.charge2go.com )

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Old 01-02-2008, 10:46 PM #5
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Default Re: BLuRay mod #2. *1xAA boost circuit.

Wow! that looks nice and its super small too, and i like how it actualy looks like a laser pointer just a little shorter.

...lazer.... ;D ;D ;D
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Old 01-03-2008, 11:00 PM #6
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Default Re: BLuRay mod #2. *1xAA boost circuit.

Added a switchguard (purple) and sticker today. *

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Old 01-14-2008, 11:45 PM #7
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Default Re: BLuRay mod #2. *1xAA boost circuit.

where did you find the battery contact board? and that driver board came with that charge2go right?
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Old 01-15-2008, 01:00 AM #8
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Default Re: BLuRay mod #2.  1xAA boost circuit.

Quote:
Originally Posted by bcroft
where did you find the battery contact board? and that driver board came with that charge2go right?
Yes, I can confirm the driver comes with these from looking at them in the past.
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Old 01-15-2008, 01:34 AM #9
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Default Re: BLuRay mod #2. *1xAA boost circuit.

Quote:
Originally Posted by bcroft
where did you find the battery contact board? *and that driver board came with that charge2go right?
1. I made it
2. yes (but be sure to check the output of other manufacturers' boards - I have seen these in multiple varieties)
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Old 02-29-2008, 12:48 AM #10
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Default Re: BLuRay mod #2. *1xAA boost circuit.

I made another of these (version 2). Changed the switch and the switch guard.

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Old 02-29-2008, 12:48 AM #11
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Default Re: BLuRay mod #2. *1xAA boost circuit.

With some friends.

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Old 02-29-2008, 01:49 AM #12
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Default Re: BLuRay mod #2.  1xAA boost circuit.

wait so how did you regulate current? i thought these things output like 100mA to charge the phone. not to mention that the output would be very messy and unreglated.
i don't know how long a blueray diode would last running directly off that
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Old 02-29-2008, 03:23 AM #13
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Default Re: BLuRay mod #2. *1xAA boost circuit.

This configuration runs the circuit outside its normal operating range and by a bit of a fluke, the current sharply drops off at the voltage of the Bluray. There are some additional notes in the first post.

Quote:
Originally Posted by woop
wait so how did you regulate current? i thought these things output like 100mA to charge the phone. not to mention that the output would be very messy and unreglated.
i don't know how long a blueray diode would last running directly off that
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Old 03-01-2008, 03:00 AM #14
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Default Re: BLuRay mod #2.  1xAA boost circuit.

you can get the charge to go at DX for 5$
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Old 03-01-2008, 03:48 AM #15
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Default Re: BLuRay mod #2. *1xAA boost circuit.

Quote:
Originally Posted by toked323
you can get the charge to go at DX for 5$
You can get something that "looks like" a Charge to Go. There appear to be some differences from the DX pics and as I mentioned in the first post, there are different versions of these with different circuit boards. So if anyone is planning this mod, please be sure to test it first with an appropriate dummy load to ensure the current will not be too high for a Bluray.
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Old 03-01-2008, 03:50 AM #16
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Default Re: BLuRay mod #2. *1xAA boost circuit.

The parameters of the board in the second mod must be different than the first. This one will light matches almost instantly.
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