Timeline for Why can't I see my laser?
Current License: CC BY-SA 3.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 26, 2015 at 22:00 | comment | added | nadjatee1996 | By correct, I mostly just meant enough to power it, but not enough to fry it. | |
| Aug 26, 2015 at 20:45 | comment | added | Solomon Slow | There is no correct voltage. teamwavelength.com/info/laserdiodedrivers.php | |
| Aug 26, 2015 at 20:31 | answer | added | Bruce | timeline score: 0 | |
| Aug 26, 2015 at 20:28 | comment | added | ricardomenzer | Just be careful to not, under any circumstances, point the beam (visible or not) to your or someone else's eyes, or you will risk not see the laser or anything else anymore! | |
| Aug 26, 2015 at 19:34 | answer | added | dfaust | timeline score: 2 | |
| Aug 26, 2015 at 18:33 | comment | added | nadjatee1996 | I am using a resistor...Sorry I didn't make that clear. I just wasn't sure how many batteries to use. I can still feel the heat using one battery, but no visible laser. | |
| Aug 26, 2015 at 17:39 | comment | added | WhatRoughBeast | @nadjatee1996 - Stop. Just stop. You cannot drive a laser diode directly from a battery. Don't even think about it. You must use a current regulator of some sort, even if it's just a resistor. | |
| Aug 26, 2015 at 4:14 | comment | added | Oka | standard an AA battery ~ 1.5 volt, sometimes fresh alkaline zinc battery 1.6v, another chemisty can reach 1.8v | |
| Aug 26, 2015 at 4:07 | comment | added | nadjatee1996 | No, I aimed it at somewhere else and looked at it from the side. An AA battery is around 2.5V right? So a single AA battery should be able to power it? Assuming I didn't fry it already. | |
| Aug 26, 2015 at 3:57 | comment | added | WhatRoughBeast | Which is why, in some circles, a tshirt is often referred to which says, "Do not look into laser beam with remaining good eye." | |
| Aug 26, 2015 at 3:22 | comment | added | Michael Karas | If you did happen to light the laser diode and shined it into your eye you may have damaged your eye to the point of not being able to see it!! | |
| Aug 26, 2015 at 1:37 | comment | added | Oka | Not sure, maybe vary, from this danyk.cz/laser3_en.html tutorial it stated: "The voltage drop of infrared laser diode is 2.15 V and the voltage drop of red one is 2.5 V". If you are using higher voltage, you should use current limiting resistor or current regulator | |
| Aug 26, 2015 at 1:25 | comment | added | nadjatee1996 | Oh crap, what's the correct voltage to use then? All the youtube videos I saw had them use 2 AA batteries | |
| Aug 26, 2015 at 1:11 | comment | added | Oka | connecting the diode with 2 or 4 AA battery without resistor would very likely destroy the diode | |
| Aug 26, 2015 at 0:56 | history | asked | nadjatee1996 | CC BY-SA 3.0 |