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Is this a good idea, just wondering. Has anyone used a buck converter this way ? I guess startp spike would be a problem if there is one.

Hi, I bought 1W 445nm diode, and this driver High Current LM358 Laser Diode Driver (405nm / 445nm / 635nm / 650nm / IR Diodes) - OdicForce I dont have 1n4004 , I can get hold of other diodes from cheapo PSU's, Will they work ? I guess it depends on how much voltage they drop,right ? Thanks...

Basically what the title says - in visibility chart 638 is a fair amount higher than 445nm higher but 2W is almost the triple amount in power. Maybe someone here has those those two lasers and can say from experience wich is brighter. Thanks in advance !

Hello, while rnning M140 from driver I measured the voltage and it was 4.36 volts wich kinda seems a bit low for M140, right ? The driver is 2.0 amp LM358 IC with Mosfet, Im running driver off an 7 volt fixed votage PSU, driver is set at max current but the didoe is just "eating" 900-1000ma...

Hello, a quick question, can m140 445nm diode work in negative temp minus -1 to -10 celsius, ofcourse if there is no condensation hazard in the diode ?

Hello, I have 2 questions about M140 diode. first one - What are the signs if laser is overheating ? It will lose power dramatically but are there any other signs ? Second - In a nutshell, what is the best way to test laser stability without using proper LPM ? Im trying to build continuous...

Greetings fellas ! :D Recently I started my own little business and Iv'e been pumping every cent into resurrecting my ""2W"" monster, wich (apparently) died of bad Chinese driver (Laser was eating 1.6 amps but still showed 140mw output if I remember correctly). So I recently ordered M140 diode...

So, yeah, turns out the laser diode is damaged too so it is end for this laser..... But I will be back - I will get a proper driver and another M140 diode. This is a good lesson NOT to use crappy Chinese drivers.... By the way, measuring laser power usng IR thermometer method it turned out...

Hello, my 2W laser is burning worse than my 250mw red laser, the 2W draws 1.60 amps wich is normal and at night its very bright but when I try to burn it absolutely sucks, and yes, focus is set at 'infinity'. I have 1000uf 10v filtering cap across diode for filtering, maybe that is the problem ?

Hello, I am back ! for past 3 weeks I've been building my custom 2W 445nm handheld Blue laser 'pointer' :drool: This laser is built absolutely from scrap parts. Facts and specs ! Those shiny disks are HDD platters Big round aluminium is from VCR motor (Stolen lol, dont ask) 2 Blue leds at top...

Hello and greetings ! So I recently got cheapo china 445nm driver for M140 diode, and I added 1000uf 10v cap at the output, and it works great at 1.58 amps, but when I turn it off, laser still emits a very little light,it is like 10 times weaker than 1 mw red laser, You can see it only when you...

Hi, are humans suppose to see 940nm IR ? I recently brought 10 IR 940nm off ebay, and when i turn them on they all seem to be very bright dark red, like cherry red. Are we suppose to see IR ? seems kinda weird

Hello, Im thinking on buying this driver on my 2W m140 diode, the Mosfet is rated at 2 amps so ill have to use heatsink on it, but I asked seller and he said that soft start is about 40ms wich is kinda quick, my question is will it damage my diode ? And does this driver seems reasonably good...

So, My 445nm 2W driver driver is somewhere lost so I thought how can I run diode safely so I came to this idea.... Can i use this constant current & voltage driver with output caps to filter any spikes, and i start power at about 30% and turn voltage and current gradually up till its reccomended...

So, My 445nm 2W driver driver is somewhere lost so I thought how can I run diode safely so I came to this idea.... Can i use this constant current & voltage driver with output caps to filter any spikes, and i start power at about 30% and turn voltage and current gradually up till its reccomended...

Hello, Will I able to run M140 2w 445nm diode with no problems using this Universal Module Constant Current Voltage Adjustable | eBay I will ofcourse increase current gradually to 1.7 amps so it is like 'soft-start' My question is will diode run good without any problems ? Thanks for reply in...

hello, i am building M140 diode 2W laser, and i have question about those drivers ? Wich one of them is best design and will power my diode good without any spikes etc ? 17mm Circular Variable Boost Driver Board for 405/445nm Laser Diodes (1.5-1.8A ) | eBay second 445nm 447nm 450nm 1w 1.4w 2w...

Hello I am building a M140 2w 445nm laser and i found this driver, my question is this driver a quality one and will it power my M140 with a good lifespan, and will i generally be OK using this driver ? 445nm 447nm 450nm 1W 1 4W 2W Laser Diode Drive Driver 3 7V Current Adjustable | eBay I...

Hello, i recently built this RED 250mw for just 14$ with a module from ebay, i measured laser power with IR thermometer method and turned out it is ~231mw powah(im almost sure its coupled IR with red diode and real red is much less than that). The housing is a cheap-o flashlight with a 2 HDD...