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DX100mW Red Module - Mini-Review

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chimo

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OK, here is a mini-review with pics of the DX100mW Red module and driver.

It is a dual driver (Red and Green). There are pots for both sides to adjust.  The Red side adjusts from 75mA to 260mA drive current.  I had no load for the green side so I did not test it.

Output beam size is pretty wide ~5mm but the divergence seems quite low.

All in all - a pretty good deal for $17 and change!

Label
labelsmallds5.jpg


Module w/ Aixiz
moduleandaixizsmallew9.jpg


Module front
modulefrontsmallai8.jpg


Module Rear
modulerearsmallrd4.jpg


PCB Top
pbtopsmallad8.jpg


PCB Bottom
pcbbottomsmallje3.jpg


PCB Light (for those who like to trace schematics)
pcblightsmallre4.jpg


PCB Transistor Output Stage (Green side is the same but with different biasing resistors)
pcbqpic1smallmk3.jpg


PCB Transistor Output Stage
pcbqpic2smallbg0.jpg


PCB Transistor at Power Input
pcbqpic3smallln1.jpg


And Finally Beamshot Comparison
beamshotssmall2markeduppf6.jpg
 





Benm

Benm

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Very nice to see you got it, and for that price, it's probably a very nice deal ;)

How would you rate ouput power compared to the GB diode at 200 mA? The dots in the picture look similar to me, but those are always very deceiving...

Another thing: The heatsink looks like it has many scratches, bumps and holes - did it come out of the package like that? Also, do you think the diode can be easily replaced?
 
C

chimo

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Benm said:
Very nice to see you got it, and for that price, it's probably a very nice deal ;)

How would you rate ouput power compared to the GB diode at 200 mA? The dots in the picture look similar to me, but those are always very deceiving...

Another thing: The heatsink looks like it has many scratches, bumps and holes - did it come out of the package like that? Also, do you think the diode can be easily replaced?
Click to expand...

Power output seems close. I don't have a laser meter so it's very hard to tell. The heatsink came like that - check out the pics on the DX pages - they seem to get them that way! Pretty rough!

The diode could be replaced. You would have to push the module out of the heatsink to get at it.
 
Y

yew.sir-name

Guest
Great pics, the dot comparison one is great, that tiny blu ray looks lost amongst the rest. I can't wait to see whic one i got, either way ima be a happy chappy.
 
W

wooooooolazer

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Weird, i put another thread on hear that it might be the perfect heatsink because if you could replace the diode in that module it would fit right in and heatsink a gb red nicely, Might not be able to use that board tho unless it can be modded to like 600ma..

...lazer... ;D ;D ;D
 
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chimo

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The output transistors are good for 3A. Upping the output would require more than just a pot turn. Perhaps the green side has higher output levels.

For the focus question look at the 2nd and 3rd pics.
 
Benm

Benm

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chimo said:
The diode could be replaced.  You would have to push the module out of the heatsink to get at it.
Click to expand...

I wonder how hard that will be do actually accomplish. Looking at the picture, there seems to be a lot of glue (or something like it) in the module itself. It would be great if the diodes in these can be swapped though, since i'd probably blow it up sooner or later.

Btw, what size is the heatsink block? I'm considering ordering this because it does have a flat (after polishing) bottom surface, making it a nice candidate to mount on top of a TEC.
 
laserrod

laserrod

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Bravo Chimo!
I can't wait for my 100/50mW green cousin of your red.
Nice Newwish rice paper .
It's a TRUE Ha HA ;D

Did you try the TTL connection?
 
Benm

Benm

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Laserrod said:
I can't wait for my 100/50mW green cousin of your red.
Click to expand...

I'm kinda curious if thats a 50 or 100 mW laser really... description seems to vary on that over time.
 
C

chimo

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The heatsink is about 33mm square by 45mm long.

How is the TTL supposed to function?  Is the supplying a 5V signal or grounding the signal wires.  Is the reference wrt to the power supply.  The non-grounded wire connects through a resistor to the inner drive transistor and then on through another resistor to the board power (not to +Vin  but after a couple of diodes and the slow start transistor).  Are they simply supposed to be shorted/grounded (because that works)?

I confirmed exit beam diameter is 5mm. Without any additional optics it will smoke and melt electrical tape at about 6 meters - the beam is smaller at this distance than at the laser.
 
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chickenfish

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I have mine... its identical. But i cant get it to power up. Just red and black wires to a 5V power supply? How have you done it?
 
C

chimo

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Did you wait for 5 or 6 seconds after applying power? It has a delayed start. I used 5V - current draw was ~250mA after ramp-up.

chickenfish said:
I have mine... its identical. But i cant get it to power up. Just red and black wires to a 5V power supply? How have you done it?
Click to expand...
 
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chickenfish

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Yeah i have waited ages... not a glimmer of light. Im just using batteries at the mo. What have you actually used for a power supply?
Please dont be doa laser :'(
 
C

chimo

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I used a regulated power supply.

chickenfish said:
Yeah i have waited ages... not a glimmer of light. Im just using batteries at the mo. What have you actually used for a power supply?
Please dont be doa laser  :'(
Click to expand...
 
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