Search results

hi guys, i wonder for a while why do we we all have all those powerful lasers, but if we want low powered one we usualy build another one.. i decided to combine the two in one package by slide switch to vary the resistance of the shunt resistor. high power drives 260mA to the diode which is...

are you trying to make helmet like that for using this "red therapy" ? if so.. just buy some cheap ones like those.. they are 650nm.. trust me it does not matter.. anything from 638 - 808nm wil pretty much work the same.. all you need is laser light that is coherent.. even red leds work -...

hi guys i am in need for 532nm laser module that can be run for longer period of time. idealy i need just smalest possible module that i can place in heatsink of mine with apropriate airflow in mind. i wonder if you can recommen me some?? there is a lot on ebay and ali, but i doubt those...

i also never won anything, like ever... that might be the reason this ended up like this.. again.. :D :D :D

Hi guys, i just want to share my latest build that is not your usual one. I have access to lot of tools as my father have them all, but one thing i am missing is lathe. Ability to shave metal with lathe is what i miss to make builds like yours from scratch. Especialy heatsinks, and be able to...

when i got my first 488nm color it was the best one i have seen till i didnt see 450nm.. that one is my favorite.. 1.6w must be impressive a lot

thank you for extensive reply, thing is i used 18650 battery fully charged.. module will be copper without solid back.. plus aluminium block heatsink around 22 x 40 x 27mm.. as a dummy load i used our standard method, with using 1N4001 and 1ohm resistor. this might be issue.. i used 5...

hi guys i am sure you are familiar with this driver, i would like to ask you if i need to change some resistor to get full 1.6watts out of it..?? as mine gives me 300-600mA on a dummy load, with potentiometer all the way left-right.. something isnt right.. The driver closeup:

oh.. i thought that that mosfet allow all the juice from the battery to go to the driver.. in that case, i found only some big dirvers 12-24v.. i would like to keep it compact, as all i need is like 5-10mw from a laser. do you know some small size pwm driver that can be driven by single...

so thats why i put mosfet switch/ that that acts as gate switch from battery straight to driver. i didnt metioned that, but it is on the picture i attached

hello guys i just would like to know if it is viable option to use signal generator as a simple switch in front of actual laser driver.. see picture. would it work fine, or is my thinking completely off. all i need is 1- 30 hz. so slow blinking basicaly. thank you

your laser will have driver board inside.. they used to have potentiometer, or shunt resistor.. measure voltage across shunt resistor divide it by resistor value and you get current going to the diode.. if you need to lover output of the diode replace the resistor with required value...

hardware inside those cheap laser pointers changed a lot.. zenodilodon made a video on youtube where he compared couple of different era pointers.. nowadays drivers inside are literaly consisting of couple of resistors... its ridiculors.. even IR diodes are looking strange .. let alone...

hello guys do you think it is G8 lens ??? option #100 specs seems to be suggesting that.. thank you..

amazing job, i love this pen builds, aslo i am jealous of this host.. can you also share some info about driver you used with this build? thank you.

it would be better if you stated what you want from the lens .. i suppose you want a nice beam/dot... so i have to say G8 lens and 3element are your best choice for that.. find some threads about them here on the forum.. there is plenty.. but to summarize: G8 is best overall.. nice small dot...

10m or beyond sounds like you want to focus to infiniy.. probably same lens can do the trick.. you have to move it out... find the sweet spot.. if you are not happy with the beam/dot of stock lens than consider G8 or 3element lens..

i would be interested also in host (housing) only.. let us know.. nice to see actual ebay seller here .

does anyone notice the thickness of a device? as far as i recall majority of the compact yellows where thicker than this pen in question that uses 2xAAA..

Not much to be said here, just to show some nice build. as the title describes the colours, the driver is set to 210mAh.. host is standard brass pen sanded to be completely polished and painted. beamshot comparison with 488nm cyan