Reddit mentions: The best diode lasers
We found 19 Reddit comments discussing the best diode lasers. We ran sentiment analysis on each of these comments to determine how redditors feel about different products. We found 14 products and ranked them based on the amount of positive reactions they received. Here are the top 20.
1. 2W Copper 445nm M140 Blue Diode LD Module W/X-Drive & 405-G-2 Glass Lens
- 2W Copper 445nm M140 Blue Diode LD Module W/X-Drive & 405-G-2 Glass Lens
Features:
Specs:
Height | 0.2 Inches |
Length | 4.1 Inches |
Width | 2.3 Inches |
2. 405nm 100mw Violet Blue Laser Diode Module Focusable 5V Laser Dot Diode Module 12mm x 45mm with AC Adapter
- Output Power: 100mw, Wavelength: 405nm
- Working Voltage: 5.0V DC, Working Current: <200mA
- Dimensions: 12mm x 35mm (sometimes 12 x 40mm according to factory batch)
- Laser Shape: Dot, Focusable: yes
- Material and Color: Aluminum, Lens: plastic
Features:
3. HiLetgo 10pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm
- 5V 650nm 5mW Red Dot Diode Laser Head Red Laser Diode 6mm Red Laser Diode Laser Head
- Wave length: 650nm
- Wide range of wroking temperature: -10°C to +40°C
- Application: Level instrument, Ground instrument, Long distance laser listener remote light control, Long distance laser wireless communication
Features:
Specs:
Color | Red |
Size | Small |
4. 2000mw High Power 450nm 2W Focusable Blue Dot Laser Module Cutting/Burning Matches + 12V Adapter
Diode Model: NDB7875Output wavelength: 445nm ~ 450nmOutput power: <2WOperating voltage: DC = 12VSpot mode: Dot
5. GeeBat 10pcs Mini Laser Dot Diode Module Head Red 650nm 6mm 5V 5mW Diode Lasers
- Material: Copper Plastic.
- Laser Shape: Dot. Outer diameter: 6 mm.
- Wavelength: 650nm. Working Voltage: 5v.
- Operating Current: must less than 20 Ma.
- Can be used to connect diode tubes for multiple use.
Features:
Specs:
Weight | 0.0440924524 Pounds |
6. Focusable 650nm 5mW 3-5V Red Laser Cross Module Diode w/ driver Plastic Lens (2 Pack)
Wavelength:650nmOutput Power:5mwWorking Voltage:3 - 5VLaser Shape:crossMaterial and Color:Metal
7. 300mW 635nm Copper LD Diode Module W/Driver & Three Element Glass Lens
- 300mW 635nm Copper LD Diode Module W/Driver & Three Element Glass Lens
Features:
8. Quarton Laser Module VLM-650-28 LPT Red Laser Line Generator (ECONOMICAL LINE LASER)
Economical Red Line Laser, ideal for a 3D-scanner at short distance and any barcode reader. Line-width optimize at the distance of 1 meter: 1.2mm. Emitting angle: > 60°.Wave length: 650nm. Output power (Center) : Class II – less than 1mW. 2.6~5 VDC operation. Dimensions: D9 x 26 mm. Please notice...
Specs:
Color | Red |
Height | 0.3543307083 Inches |
Length | 1.0236220462 Inches |
Size | Ф9 x 26 mm |
Weight | 0.05 Pounds |
Width | 0.3543307083 Inches |
9. 2W 445nm M140 Blue Diode in Copper Module W/Leads & Three Element Glass Lens
- 2W 445nm M140 Blue Diode in Copper Module W/Leads & Three Element Glass Lens
Features:
10. Three-axis Adjustable Holder Diameter 19.5mm Heatsink for 18mm Laser Diode Module
- We will ship it within 2 working days, it may takes 7-12 days to USA.
- Inner Diameter :19.5mm
- 360 degrees all-around direction adjusted
Features:
Specs:
Number of items | 1 |
11. Lights88 532nm Green Laser Module Diode Stage Light moduler with Cable(5mw Green Dot Laser Module)
Industrial class 532nm Green Laser Dot ModuleDot high Power Green Laser BeamACC Circuit Green Laser Dot ModuleDC 3.7V Green Lazer ModuleGreen Laser Ray Diode Module
Specs:
Color | Copper |
12. 1875 532nm 10mW Green Line Generator Laser Module for Alignment DC3-5V
Aluminium Housing of 18mm Diameter and 75mm LengthAnti-dust Design of the Laser module Body10mW for Indoor Operation3-5m recommended working distance110-220Vac-dc adapter
13. Quarton Laser Module VLM-650-03 LPA (ECONOMICAL DOT Laser)
Economical Red Dot Laser - Low cost solution for consumer grade positioning, measuring, pointing and laser sighting device. Please notice: laser modules are not stand alone item. They are not supposed to be sold with any power source, power supply, or wiring terminals. Because modules are simply com...
Specs:
Color | Silver |
Height | 0.2755905509 Inches |
Length | 0.8267716527 Inches |
Number of items | 1 |
Size | Ø 7 x 21 mm |
Weight | 0.09479877266 Pounds |
Width | 0.2755905509 Inches |
14. 405nm Blue Purple Laser Dot Line Cross 12mmx45mm Diode Module 50mW with US Power Adapter and Heatsink Holder
Output Power: 50mwWavelength: 405nmWorking Voltage: 5V DCDimensions: 12x45mm(sometimes it's 12x35mm,according to factory's manufacturing)It is a 405nm 1mw focusable laser dot module with two caps: line and cross. There are two caps for this laser. you can change the caps to get different effect: lin...
🎓 Reddit experts on diode lasers
The comments and opinions expressed on this page are written exclusively by redditors. To provide you with the most relevant data, we sourced opinions from the most knowledgeable Reddit users based the total number of upvotes and downvotes received across comments on subreddits where diode lasers are discussed. For your reference and for the sake of transparency, here are the specialists whose opinions mattered the most in our ranking.
Hey! I'm a chemistry grad student, and my group does this demo as part of a science outreach program we run. Here's how we do it:
We use orange highlighter for the right solution, which works quite well. You just dissolve an orange highlighter cartridge in some water.
The center one is just store-bought tonic water, though you could try some other colorless fluorescent compounds like POPOP or anthracene (the tonic water is probably the best and easiest though).
The left one can be substituted with a green highlighter dissolved in water, but it doesn't produce that nice line when you shine the laser through. Fluorescein is a pretty common fluorescence standard, so it's quite possible that your lab would have some. If not, you can actually just buy it on Amazon. It dissolves in mildly basic aqueous conditions (~0.1 M NaOH is what I use)
We use a UV laser diode for the light source, something like this.
Hope that helps!
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Title|Recreating the 40-Yard Dash Speed Test with a Raspberry Pi and Phototransistors
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Description|In this video, we show how we created the NFL's 40-yard dash speed test that is used by scouts to evaluate the speed of potential American football prospects. To recreate the test, we used a Raspberry Pi, phototransistors, laser diodes, resistors, a analog-to-digital converter, and a simple Python stopwatch program. Using these materials, we created two laser tripwires separated by 40 yards. One tripwire starts the stopwatch, and the other stops the stopwatch. ⤶⤶For more information on the code and our wiring setup, visit our github repository: https://github.com/chris-gong/forty-yard-dash-rpi⤶⤶Thanks again to our friends for helping us out: Alex, Taylor, Ethan, Zach, and Grant⤶⤶Join our discord: https://discord.gg/2xbR5qT⤶Support us on patreon: https://www.patreon.com/flopperam⤶⤶Social media links:⤶Twitter: https://twitter.com/Flopperam⤶Instagram: https://www.instagram.com/flopperam/⤶Facebook: https://www.facebook.com/flopperam⤶Alex's Twitter: https://twitter.com/uhFakie⤶⤶Materials Used:⤶Raspberry Pi: https://www.amazon.com/ELEMENT-Element14-Raspberry-Pi-Motherboard/dp/B07BDR5PDW/ref=sr_1_4?keywords=raspberry+pi&amp;qid=1565404835&amp;s=gateway&amp;sr=8-4⤶Phototransistors: https://www.amazon.com/HiLetgo-Phototransistor-Photosensitive-Sensitive-Sensors/dp/B00M1PMHO4/ref=sr_1_2?keywords=phototransistor&amp;qid=1565404855&amp;s=gateway&amp;sr=8-2⤶Laser diodes: https://www.amazon.com/HiLetgo-10pcs-650nm-Diode-Laser/dp/B071FT9HSV/ref=sr_1_3?keywords=laser+diode&amp;qid=1565404876&amp;s=gateway&amp;sr=8-3⤶Breadboards: https://www.amazon.com/Breadboards-Solderless-Breadboard-Distribution-Connecting/dp/B07DL13RZH/ref=sr_1_3?keywords=breadboard&amp;qid=1565404905&amp;s=gateway&amp;sr=8-3⤶Battery holders: https://www.amazon.com/LAMPVPATH-Battery-Holder-Bundle-Single/dp/B07BNMKNQX/ref=sr_1_5?keywords=battery+holder&amp;qid=1565405063&amp;s=gateway&amp;sr=8-5⤶Analog-to-Digital converter: https://www.amazon.com/HiLetgo-Converter-Programmable-Amplifier-Development/dp/B01DLHKMO2/ref=sr_1_3?keywords=raspberry+pi+adc&amp;qid=1565405226&amp;s=gateway&amp;sr=8-3⤶Breadboard wires: https://www.amazon.com/EDGELEC-Breadboard-Optional-Assorted-Multicolored/dp/B07GD2BWPY/ref=sr_1_3?keywords=breadboard+wires&amp;qid=1565404930&amp;s=gateway&amp;sr=8-3⤶10k ohm resistors: https://www.amazon.com/Projects-100EP51210K0-10k-Resistors-Pack/dp/B0185FIOTA/ref=sr_1_3?keywords=10k+ohm+resistors&amp;qid=1565404944&amp;s=gateway&amp;sr=8-3⤶⤶Music Creds⤶Song: Royalty Free Music | Victory - Hip Hop Beat | No Copyright Instrumental⤶Video Link: https://www.youtube.com/watch?v=4D-LoMTbvx4⤶Music & Arrangement: Marjan Gjorgjievski⤶Mix & Mastering: Marjan Gjorgjievski⤶⤶Song: Lakey Inspired - Blossom⤶Video Link: https://www.youtube.com/watch?v=B7ArnZl_zBU⤶Follow the artist, Lakey Inspired:⤶https://www.facebook.com/LAKEYINSPIRED⤶https://soundcloud.com/lakeyinspired⤶http://instagram.com/lakeyinspired⤶⤶#nfl #40yarddash #raspberrypi
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first google result You'll also have to find a constant current laser diode driver, a module to mount the diode in which has a lens, and a heat sink to put the module on or in.
You can also get ready made modules like this But you would need to get a big heatsink for it. That tiny driver board might overheat as well so this probably isn't the ideal module for engraving. You'll want to end up with something like this. IF you want to make it yourself and need it to run constantly, I'd suggest drilling a hole in a computer CPU heartsink for the module.
You can find a lot more information about how to mount, drive, and assemble these things at LaserPointerForums and PhotonLexicon DIY sections. There is also /r/lasers Some of the message board members run web stores and sell all sorts of useful parts for this sort of thing, often made at home. The guy I used to buy from is closed now though. PhotonLexicon is mostly focused on laser shows, and LPF is more about laser pointers, but between the two you should be able to figure out what you need.
I believe the most common donor projector is a Casio m140, but it's been a long time since I've been messing with lasers and there may be better sources now.
Wattage depends on what you’re trying to do, but you won’t find a unit small enough for that job above 1 or 2 Watts. That should be enough to engrave woods and acrylic, and probably cut almost nothing.
This could work.
https://www.amazon.com/Focusable-Cutting-Burning-Matches-Adapter/dp/B06WVHS3K5/ref=mp_s_a_1_3?ie=UTF8&amp;qid=1537218156&amp;sr=8-3&amp;pi=AC_SX236_SY340_QL65&amp;keywords=laser+2watt&amp;dpPl=1&amp;dpID=51m7Akat%2BbL&amp;ref=plSrch
The issues with a project like that are:
I tried to do exactly the same thing last year and eventually realized that buying a small Chinese laser cutter would be easier, safer, more powerful, and generally far more useful, not to mention I wouldn’t lose my 3D printer to the cause. It can be done though, if that’s what you really want.
With an LED holder and a little bit of work you can add something like this to it.
At 5v the dot is pretty visible.
I bought a laser crosshair that runs off of a 5V wall-wart. It's mounted on the garage ceiling and lined up to a point on my dashboard. I combined that with a simple magnetic switch wired from the garage door so it only comes on when the door is open.
The laser lines are long enough so I can use it to guide me in.
This has allowed me to place my car within 1/4" of where I need it to be so I can open the doors and trunk without banging into something (There is literally 1/2" clearance for a couple of the doors).
Hope this helps.
Well, I got the ones off Amazon instead, since I'm with a research organization and admin frowns on the use of eBay unless necessary. I got these: http://www.amazon.com/gp/product/B00HHHOU1Y/ref=oh_details_o00_s00_i00?ie=UTF8&amp;psc=1
They have the x-drive board built in.
Off the cuff suggestion:
Can it be red? You can pick up some cheap red laser lines intended to be used on circular saws. Retro fit the battery to a controllable power supply. You can get them at Harbor Freight or pricy ones via Amazon
>(I may get some basic online courses on electrical engineering or optical science if thats a good idea)
Electro-optics is literally my major so ask away
But 10W is insanely too much power for any application other than engraving or bring reckless.
For a first build i would recommend not going above 10-20mW because of how dangerous it gets. But you can buy lasers built into housings like this and use a lighter driver
https://www.amazon.com/445nm-Diode-Copper-Module-Element/dp/B00HFHJBDI/ref=sr_1_1?ie=UTF8&amp;qid=1482526661&amp;sr=8-1&amp;keywords=2+watt+laser
This is the driver: http://www.ebay.com/itm/5A-analog-linear-PWM-laser-diode-driver-with-thermal-protection-/162291013120?hash=item25c94c5600:g:w7oAAOSwiYFXHE-T
I have a feeling that maybe the driver isn't allowing the full current through to the laser.... I'm considering running without the driver and seeing how that goes.
Amazon has a couple of sellers with modules cheaper than pointers....
http://www.amazon.com/dp/B00HFHPPQ0/ref=pe_385040_127541860_TE_3p_dp_1
Used these mounts.
Three-axis Adjustable Holder Diameter 19.5mm Heatsink for 18mm Laser Diode Module https://www.amazon.com/dp/B07C4Q5HLC/ref=cm_sw_r_cp_api_b566Bb45NRTVB
https://www.amazon.com/Lights88-532nm-Green-Module-moduler/dp/B076HMNN4K/ref=pd_sbs_328_1/138-2880455-8222035?_encoding=UTF8&pd_rd_i=B076HMNN4K&pd_rd_r=a09c1d4c-783b-11e9-a004-a1acb67dd0d5&pd_rd_w=MOnWu&pd_rd_wg=GZhd0&pf_rd_p=588939de-d3f8-42f1-a3d8-d556eae5797d&pf_rd_r=1ZNCRF9GESE4D0MWY5CC&psc=1&refRID=1ZNCRF9GESE4D0MWY5CC
Found one for 25$
https://www.amazon.com/532nm-Generator-Module-Alignment-DC3-5V/dp/B00UBQXJFQ/ref=sr_1_9?ie=UTF8&amp;qid=1541054043&amp;sr=8-9&amp;keywords=laser+line+diode
The original LAM comes with a low power flashlight and a red LED mocking a laser. I installed my own laser by removing some material on the inside, disconnecting the original wires, and connecting the lasers. I'm still figuring out someway to set windage and elevation but for now I'm just shimming it with electrical tape.
Regarding the laser...
That sensor comes with editable programming code that allows you to control whether it should power on/off an object (eg. an alarm) for your choice of duration, based on a trigger of being hit by a laser, or held focus by a laser, or losing focus of a laser. For your use case you'd program this sensor to get triggered when the laser stops hitting it, at which time it will supply power to an alarm for a duration of say 1 hour, regardless of the laser starts hitting it again.
EDIT: That sensor can have a switch between it and its own power source, so that players can throw the switch to turn off the sensor and the alarm.