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Hi. Does anyone know the schematic of a driver board ~16mm x 10mm with a LM358 I.C, a tact switch and a couple of transistors and few resistors supposed to drive a 1500mW violet, was inside a 14mm pointer tube ? No potentiometer trimmer. It is masked white, unable to follow its traces to...

Hi. Saw goggles of several colors sold for protection to violet. Lenses color has no relation to protect from a laser color ? If someone is working with several wavelenght lasers, can pick any goggles from the pretty colorful pile in the drawer; or the reverse, working behind a...

Hi. Which simple pointer in the market would you suggest to obtain; powered by a removable 18650, switch button on the side, that can be made 100 feet waterdepth proof for scuba use, fitting a ~1Watt violet or blue laser diode in place of whatever has original, focusable to ~20' away ?

Hello. Found a KES-400A diode that emits violet and red from the same die (used in PS3 gaming equipment); Do you know of a vendor for similar others for engraving use ?

Hello. A white beam of intensity 'X' made to pass trough a purple colored 'filter' of 'Y' nm yields a 'Z' amount of energy at target. How different is the level of energy at target for a purple laser of same 'Y' nm ? In other words; to make a purple laser and a colored white beam hit the same...

Hello. Saw some graphs of how long time and lumens for several models of LEP. But seems to be the duration of their battery emitting the light. Assuming the battery is of 'infinite' duration or external power supply; and temperature and whatever other parameters are kept correctly; when would...

Hello. Looking for a supplier of film, sheet or thicker protection to attach or replace the one on goggles similar to these common ones, or to place in an flat inspection window. For 405nm or 450nm / violet engraving. Not the standard curved or wraparound proper worn goggles on the market...

Hello. The ones offered in the market mention they work with 5V. Is it 5V because there is a current limiter built-in or because it is the maximum supply to it or any suggestion to source one that works with a 18650 cell ? Example

Hi. These engraving lasers differ greatly in price. Do they differ greatly in performance ?

Hello. Just bought this rechargeable $6 red pointer from curiosity, housing is plastic; do you know what battery is inside, if it is replaceable, is the housing openable or is it a disposable ? Cannot unscrew it other than the lens :(

Hi. This black screen is not of my preference. I there a normal 'light' style to choose ?

Good day. A chinese cheap and common 1500mW violet engraving laser 12mm module focuses to about 10 cm with its supplied lens adjusted all the way in... What lens can be installed instead to focus at ~10m, or beyond ? It is not for engraving.

Hello. Please recommend a housing that can receive a 18650 cell; and a module like pictured below. Did not see something alike at ebay and others :( Should be very waterproof like these with side switch, (not at tail) :

Hello. Is there any provider for the sliding magnet captive in a groove assembly to be mounted outside of a plastic tube ? The reed switch itself, I have a bunch; is simple to find. It makes it truly waterproof. Used also in this one:

Good day. First post with lots to learn. How to produce a ~3mm dot at 6 metres (1/8" at 20') with a 405nm module like this 12.2mm diametre, ~46mm long module that has some lensing on it. With its lens all the way in, the beam still diverges. Do I need a housing with lens or collimator or both...