Old 04-08-2014, 02:51 PM #1
Junior Member
 
Join Date: Apr 2014
Posts: 4
Rep Power: 0
briankc is on a distinguished road
briankc briankc is offline
Junior Member
 
Join Date: Apr 2014
Posts: 4
Rep Power: 0
briankc is on a distinguished road
Default Compact 12v setup

Hello All,

I'm new to the forum (and to lasers). I'm working on a project and am wondering what is the feasibility of powering 4 small lasers (the shorter the housing the better) with a 12V DC source. I would have a little room to work with (for step-down converter or something) but not much.

These would be used for guides on the back of an automobile, so they would have to be bright enough to see during the day while pointed at the ground 3-8 ft away.

Not sure which color has the best visibility during the day, so any advice on that would also be appreciated.

Thanks for any tips/leads.

v/r,
Brian



Last edited by briankc; 04-08-2014 at 02:52 PM.
briankc is offline   Reply With Quote


















Old 04-08-2014, 08:26 PM #2
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,453
Rep Power: 7374626
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,453
Rep Power: 7374626
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Compact 12v setup

Lasers in traffic is a terribly bad idea. Why do you need "guides," and why can't it be done with a technology that doesn't have the potential of blinding or distracting other drivers?
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 04-09-2014, 12:17 PM #3
Junior Member
 
Join Date: Apr 2014
Posts: 4
Rep Power: 0
briankc is on a distinguished road
briankc briankc is offline
Junior Member
 
Join Date: Apr 2014
Posts: 4
Rep Power: 0
briankc is on a distinguished road
Default Re: Compact 12v setup

Wouldn't be on while driving--tied into the reverse light. Also, they're pointed at the ground from the license plate area.. so you'd have to be riding a skateboard on your back, as I'm reversing, to be blinded by it.

The need is because the reverse camera of some cars don't have predictive lines and have a very wide angle lens. This makes it difficult to know where you're car is truly headed. The visibility out of the back window is very limited.

Thanks for any info.
briankc is offline   Reply With Quote
Old 04-10-2014, 01:45 AM #4
Tw15t3r's Avatar
Class 2 Laser
 
Join Date: Oct 2008
Location: Singapore
Posts: 266
Rep Power: 19
Tw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to behold
Tw15t3r Tw15t3r is offline
Class 2 Laser
Tw15t3r's Avatar
 
Join Date: Oct 2008
Location: Singapore
Posts: 266
Rep Power: 19
Tw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to beholdTw15t3r is a splendid one to behold
Default Re: Compact 12v setup

I would recommend the classic 532nm DPSS laser modules which shouldn't be too difficult to get. Those are the brightest for the least power, as you might have noticed with laser pointers.

The only trouble is that you need a little bit of extra space, as the module is usually about twice the length of others. I'd still recommend it though, simply because green's visability, especially during the day, is much higher than any other colour.

Alternatively though, why not just ask someone to help you draw lines on the ground (with tape, or chalk), and then mark them on your screen (by placing a transparent piece of plastic over it, and drawing lines with a marker)? That would save so much hassle, and always be visible, while requiring no cost nor any extra wiring and parts.
__________________
445nm 2800mW (9mm,X-drive) "Starlight Breaker" (link)
532nm 52mW (O-like module) MXDL (link)
532nm 25mW pen pointer
532nm 20mW pen pointer
532nm 6mW keychain pointer
650nm 18x DVD <in progress>
650nm 4mW Sure module in penhost
650nm 2mW pen pointer
Tw15t3r is offline   Reply With Quote
Old 04-10-2014, 12:19 PM #5
Junior Member
 
Join Date: Apr 2014
Posts: 4
Rep Power: 0
briankc is on a distinguished road
briankc briankc is offline
Junior Member
 
Join Date: Apr 2014
Posts: 4
Rep Power: 0
briankc is on a distinguished road
Default Re: Compact 12v setup

Quote:
Originally Posted by Tw15t3r View Post
why not just ask someone to help you draw lines on the ground (with tape, or chalk), and then mark them on your screen
The rear camera video is not always on the screen and the markings would interfere with the other screens.

Thanks for the tip on the 532nm DPSS. I'll check it out.
briankc is offline   Reply With Quote
Old 04-11-2014, 06:26 AM #6
The Lightning Stalker's Avatar
Class 3B Laser
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,655
Rep Power: 6070
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
The Lightning Stalker The Lightning Stalker is offline
Class 3B Laser
The Lightning Stalker's Avatar
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,655
Rep Power: 6070
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
Default Re: Compact 12v setup

Most of the 532nm modules and pens run on 3V. You will need something to reduce the 12V
coming from the car.

New Durable Mini 3A DC DC Converter Adjustable Step Down Power Supply Module | eBay
__________________
ALL NEW MEMBERS MUST READ THIS!!! --> http://www.laserpointersafety.com

"Where, now, is the way by which the light distributes itself" - Job 38:24

YouTube Channel
The Lightning Stalker is offline   Reply With Quote
Old 04-11-2014, 10:59 AM #7
djQUAN's Avatar
Class 3R Laser
 
Join Date: May 2013
Location: Philippines
Posts: 1,132
Rep Power: 384886
djQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond repute
Send a message via Yahoo to djQUAN
djQUAN djQUAN is offline
Class 3R Laser
djQUAN's Avatar
 
Join Date: May 2013
Location: Philippines
Posts: 1,132
Rep Power: 384886
djQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond repute
Send a message via Yahoo to djQUAN
Default Re: Compact 12v setup

532nm greens are brighter to our eyes. But not on all cameras. Red might even be brighter on the camera as they are usually sensitive to IR.
djQUAN is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 08:11 PM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC