445nm O-Like 650mW w/ TTL for $152.99

**nolimits** · 08-12-2010, 12:24

hi,

yeah... it is cheap but for this quality i can do this cheaper and much better.... really. an electronic device without documentation doesnt show a good manufactor.

**xntrix** · 08-12-2010, 13:22

Hi,
As I have learnt - being able to do it cheaper, and actually being able to do it and make a profit (which is essential if you wish to continue to trade), are two different things.

I am not doubting your abilities - after all I know nothing about you, but if you can offer something better (and cheaper), I might be interested!

David

**nolimits** · 08-12-2010, 16:40

well im a german student in physical technologies. so i can tell you i can do this for original costs of 30 euro*. for this reason, i will create it next days. i will add an adaptive optic system and a laser beam-control to move the beam around via kind of a joystick. my last idea to focus the beam with a distance measurement could work to. this will be a fly lasergun^^

let me tell you, that every company include datasheets. o-like not. and the crappy driver (nothig more as a resistor on the emitter an a ttl input) shows you that the 1W diode is recommend for 700mW or less. so a good diode, a good cooler and a good driver will reach 1000mW continous load.

well, ... nothing against you

but this istn ~190$ worth (15euro shipping - they will replace yours).

*and brain

**djlorenz** · 08-13-2010, 02:31

recieved today... nice diode but they dold it can reach about 900mw with 650mw.. why my diode is 580mw (on my lab psu) and it's only 550mw??

and, how can i increase/decrease the current of the diode? i tried to move the trimmer inside the psu but no changes

**nolimits** · 08-13-2010, 02:56

increase the voltage perhaps.

900mW with 650mA isnt possible.

the diode has 1-3W heating power. so 900mW will be with 800 - 1000mA current. driver will shallow 30% current into heating power.

**djlorenz** · 08-13-2010, 03:03

mmm... something like a shit driver?

if it losts 30% it's possible... 580mW on PSU = about 400mA on diode...
but i have to learn how power up the current...

also another thing... on the label on the drivers it said 12V AC/DC
on the little paper with the diode it says 12/15V DC...

has the driver the diode bridge? i can't see it on the board!

**nolimits** · 08-13-2010, 05:30

well i suggest you to return the laser. without any documentation you will kill the laser sooner or later....

but this will not help you. may you take a photo from the driver? front and back. perhaps i cal tell you something...

**djlorenz** · 08-13-2010, 05:37

ok, i found how change current, trimmer was at the and and it needs more voltage to increase the current, now it's on 600mA and about 570/600mW

the driver is complete covered with black glue... is this the main problem, i cant see the diode bridge...

i've sent a mail to o-like...