How to make a powerful burning laser from DVD-rw

แชร์
ฝัง
  • เผยแพร่เมื่อ 13 พ.ค. 2024
  • My Patreon - / howtodo In this video I try to show how to make a powerful laser from Burn
    Or you can simply buy one on Ali: ali.pub/1kd7vr
    OR on Amazon: amzn.to/3yxKCzL
    DVD-RW drive. As always, the list of components:
    LM317 on Ali - alli.pub/5vq3q1
    Amazon - amzn.to/2xMfpJ2
    3.3Ohm on Ali - ali.pub/ol0zp
    Amazon - amzn.to/2yvhcG5
    Laser Module on Ali- alli.pub/5vq3vv
    Amazon - amzn.to/2zy5vgq
    Laser diode on Ali - ali.pub/1whan9
    Amazon - amzn.to/2hNosDM
    www.instructables.com/id/Powe...
    instagram - / konsta.kogan
    Despite the fact that my English is almost perfect, maybe you could notice a small Eastern European accent, it's because I'm Russian, and answering the question "why don't you make videos in both languages?" I actually do, and my Russian channel is here - / shhitov
    (the videos are the same, so for English-speaking viewers it makes no sense to subscribe)
  • วิทยาศาสตร์และเทคโนโลยี

ความคิดเห็น • 845

  • @krossbow_
    @krossbow_ 4 ปีที่แล้ว +428

    My professor caught me putting this together in my school's electronics lab room, worth it

    • @empyreanprawn2782
      @empyreanprawn2782 3 ปีที่แล้ว +25

      What did he say?

    • @leocaddo1630
      @leocaddo1630 3 ปีที่แล้ว +20

      @@empyreanprawn2782 what are ya making, student?

    • @vasabi5135
      @vasabi5135 3 ปีที่แล้ว +19

      @@leocaddo1630 gamma ray

    • @mohammedamineb.4436
      @mohammedamineb.4436 3 ปีที่แล้ว +20

      @@leocaddo1630 more like
      *DAFUQ*

    • @leocaddo1630
      @leocaddo1630 3 ปีที่แล้ว +11

      @@mohammedamineb.4436 I'll call the PPPPOLICE

  • @jimkovacs7
    @jimkovacs7 3 ปีที่แล้ว +96

    I built one some years ago, still working fine ! Mine uses batts from a scrapped Laptop batt pack. I put in a circuit to charge them via USB. Nice video, thanks !!

    • @kajubijames
      @kajubijames 3 ปีที่แล้ว

      I need to cut some lines in my lady panel with this laser can it do the work?

    • @andrettibark
      @andrettibark ปีที่แล้ว +1

      If its a scrap laptop battery, it's almost certainly an 18650 cell in there, like he showed at the end.
      Sounds like an angry laser

  • @RIPVEVO
    @RIPVEVO 4 ปีที่แล้ว +416

    How to make laze easier you need to :
    -this guy
    -his materials
    -and him

  • @liveintehpast
    @liveintehpast ปีที่แล้ว +7

    lesson 1: find components you've never heard of.

  • @Evil_Ghandi13
    @Evil_Ghandi13 5 ปีที่แล้ว +310

    As soon I heard the accent, I was like yup only a Russian would do this.

    • @damu758
      @damu758 4 ปีที่แล้ว +3

      🤣🤣🤣🤣🤣🤣

    • @tedcleveland8488
      @tedcleveland8488 4 ปีที่แล้ว +5

      Sounds like an Indian guy to me

    • @howtowriteanessay2631
      @howtowriteanessay2631 4 ปีที่แล้ว +3

      it's a RUnglish, and I recognize my countrymen from it.

    • @arunjohn704
      @arunjohn704 4 ปีที่แล้ว +12

      @@tedcleveland8488 i am indian, the accent is not Like this

    • @AhmedAkram903
      @AhmedAkram903 4 ปีที่แล้ว +3

      My friend is russian and his accent is like that

  • @barrettbarker8343
    @barrettbarker8343 6 ปีที่แล้ว +46

    Has anyone else done this yet? Looks awesome! Great video: short and to the point, perfect!

    • @shipraahuja1947
      @shipraahuja1947 3 ปีที่แล้ว +3

      yes

    • @adityabirsingh1617
      @adityabirsingh1617 3 ปีที่แล้ว +1

      Shipra can you provide links

    • @robertgleason199
      @robertgleason199 3 ปีที่แล้ว +1

      Yes, I made something like it on my channel.

    • @GamingPIPI
      @GamingPIPI 2 ปีที่แล้ว +6

      I wanted to do it when I was like 10 but didn't know it was really truly possible. Internet has confirmed it for me now, 13 years later

  • @RH-zp1ry
    @RH-zp1ry 6 ปีที่แล้ว +2

    Hello, i just built the one u focused on your video (the simpler model), but i wasnt able to burn down a thing.. is this model
    suppose to do this? or is it more similar to a normal 'shop bought' laser..
    Tnx!
    P.s - i even attend the lens to change the focus, but it didnt work

  • @domsto6875
    @domsto6875 2 ปีที่แล้ว +2

    What if I want to use stronger diode? Are resistor and source only components that needs to be changed (go higher)?

  • @hyparh
    @hyparh 5 ปีที่แล้ว +13

    Very useful tutorial! Recently I detached a laser diode from an old DVD Writer SH-S223. It's an open type diode with no glass protection. I'm using this schematic with LM317, the resistor is around 14 ohms, but the diode (in its original, though small, heatsink) gets hot after 2-3 minutes of work. Is this normal or I have to add more resistance? I'm using two 3,7V Li-ion batteries in series for power supply. Unfortunately I couldn't find diode specs anywhere to see its operating current.

    • @brasstacksboxing409
      @brasstacksboxing409 ปีที่แล้ว

      His way is a bit more complex/difficult than mine. Regardless, it worked..

  • @bvaught9029
    @bvaught9029 6 ปีที่แล้ว

    If I was to buy a engraving laser similar to the one you showed all I would need is a power source correct ? Or do I have to add something else... I have a few cheap lasers I got off ebay that no longer work so I was thinking of using their bodies. Any advice or help for my project would be much appreciated.

  • @barryownt
    @barryownt 7 ปีที่แล้ว +2

    Thanks for this video I have made one myself and I'm very happy with it.
    I look forward to more diy videos on this channel :D

    • @brendonlovejoy2376
      @brendonlovejoy2376 7 ปีที่แล้ว

      What was the polarity on the laser diode? It's hard to tell from the video and I think I accidentally blew my diode from connecting it wrong. Also, if you know, is there a way to check if the diode is broken?

  • @cloudvariable9910
    @cloudvariable9910 5 ปีที่แล้ว +3

    I would make a mold of a tiny cylinder diner, not too large yet not too small. Fit inside the fully soldered and connected LM317 ballast. Use rubber insulated wire for the inputs and outputs. Fill the mold with resin, and wait for it to harden. To make sure the wires don’t screw up, use a thick set ceramic glue to cap off the wires going in and out, almost like that on flyback transformer pins. Then make a thin 3D printed case, fill it with a tiny amount of the same ceramic glue, and press fit it on. Put a nice sticker on it, and try to color code the wires.

  • @vividink2865
    @vividink2865 3 ปีที่แล้ว

    Hey I was wondering if the heat gets unbearable for the later? I am about to assemble one and the thought went through my head- won't the diode just pop when you turn it on? You are effectively making a generator to reach enough power for the diode but... Isn't it too much? Or even if the diode survives isn't it getting too hot?

  • @MaxKlax
    @MaxKlax 4 หลายเดือนก่อน

    Hi! In your video there is a list of dvds and their diodes. Can you please give us a link to that resource?
    I'd really want to know what is the maximum current for my dvd laser diode

  • @Swimmy
    @Swimmy 2 ปีที่แล้ว +2

    Does it burn things, i know the title says so but with the same specs would it burn paper?

  • @Patrickel300
    @Patrickel300 7 ปีที่แล้ว

    Hello...Can you tell me what tool to use for putting the diode inside the housing? I am having problems

  • @Qubnix
    @Qubnix 7 ปีที่แล้ว +1

    Why you did not add any capacitor in lm317 driver circuit?

  • @cursedcat6467
    @cursedcat6467 9 หลายเดือนก่อน +1

    The mini dvd player on my bookshelf rn: 😳

  • @shivamnegi7149
    @shivamnegi7149 3 ปีที่แล้ว

    can i use a 1000mW diode using the same current driver mentioned in the video?

  • @erosangelos9422
    @erosangelos9422 7 ปีที่แล้ว +1

    Privet e molodets Kostya ,,Thanks to you bro,youre English is good enough to understand this amazing tech idea youre sharing with all ,Awesome man ))

  • @zuber4913
    @zuber4913 7 ปีที่แล้ว +2

    did you use exactly the IR diodes fro moving parts or did you just brought one diode from the shop please clarify

  • @khulekanimoyo8389
    @khulekanimoyo8389 4 ปีที่แล้ว

    Nice, I tried it but with different setup, my laser comes on but can't burn, i measured the amperage i get 0.39mA at 3.3volts, am using a netgear modem router as power supply, there is a transistor inside that supplies 3.3v not sure the amps but it can light up white LEDs at 3.3v 0.35mA too, i tried to see how many it can power and the more LEDs i put the more amps it ads like for 3 LEDs mA goes to 0.56 and they stay at full bright.

  • @ronb1071
    @ronb1071 8 หลายเดือนก่อน

    What power would be enough to power a laser to make a hole through a cloud ?

  • @liveintehpast
    @liveintehpast ปีที่แล้ว +1

    customer service 5 star my friend. ty come again.

  • @user-pt6hx9tl8q
    @user-pt6hx9tl8q 6 ปีที่แล้ว

    i want to made my on lazer cutter which things are require for it ?
    i like your videos very much

  • @agent-blank
    @agent-blank 6 ปีที่แล้ว

    can i use this laser for your Arduino laser engraving project?

  • @SadSpaceDuck
    @SadSpaceDuck 2 ปีที่แล้ว +4

    What wattage should the 3.3 ohm resistors be? I also have an old 500mw laser diode. Can I still use the same schematics, using the lm317 and 3.3 ohm resistors?

    • @okaraaze1087
      @okaraaze1087 หลายเดือนก่อน

      you can use the exact same schematic yes. But you will need to use a different resistor to power this. In the video the guy posted the formula to find the output amperage of the driver.
      the current output is
      1.25v divided by the resistor value. Experiment with the resistor value on paper to find the correct current value that will run your laser diode.

  • @Zuthemonkey
    @Zuthemonkey 6 ปีที่แล้ว +3

    Do you have written instructions and a list of equipment/part names? I would like to make one! Thanks.

  • @joshuanelson5660
    @joshuanelson5660 4 ปีที่แล้ว +1

    What is the range of the cutting/burning power of this laser? 3m? 5m?

  • @ronb1071
    @ronb1071 8 หลายเดือนก่อน

    How strong is the Vegas Luxor's lazer

  • @whathowtodo
    @whathowtodo 6 ปีที่แล้ว +6

    Nice bri

  • @sirguyverknight1895
    @sirguyverknight1895 6 ปีที่แล้ว

    dude thats freakin awesome. keep up the good work

    • @gerardvaughan1847
      @gerardvaughan1847 5 ปีที่แล้ว

      It's not good work, it's BS. As you will discover if you extract the laser from a cd-R and try it.

    • @Shonade_Malik
      @Shonade_Malik ปีที่แล้ว

      @@gerardvaughan1847 ...

  • @EmergingGraphic
    @EmergingGraphic 5 ปีที่แล้ว

    Nice, How many long distance it will work.

  • @musiclyric3271
    @musiclyric3271 4 ปีที่แล้ว

    can we use this laser for making a CNC laser engraver

  • @DIYlifepoint
    @DIYlifepoint 2 ปีที่แล้ว

    Great work bro continue

  • @gammaechofoundationproductions
    @gammaechofoundationproductions 6 ปีที่แล้ว +8

    Awesome and fascinating! This was very educational and informative! MacGyver would be proud! I look forward to seeing more of your videos! You just earned a new subscriber! :)

  • @tranthinga4515
    @tranthinga4515 3 ปีที่แล้ว

    Can I replace lpc-836 diode laser with other diode lasers? Thanks!

  • @ayylasco
    @ayylasco 6 ปีที่แล้ว

    Can I use 3.3 ohm 1 watt resistor together with LM317 with power source of 6v?

  • @AG-zs3lm
    @AG-zs3lm 6 ปีที่แล้ว

    Oh my god that's really cool but i want to know where i can find all that piece because i just got the name of the LCP836 but with what i can do the rest of the laser construction
    Thanks

  • @marcusmorice
    @marcusmorice 7 ปีที่แล้ว

    hey mate i was wondering if I can buy one of you please

  • @masroorusmani3086
    @masroorusmani3086 5 ปีที่แล้ว

    hey what pcb board you add in the end pls tell i had made it till connection of transistor and resistor

    • @gerardvaughan1847
      @gerardvaughan1847 5 ปีที่แล้ว

      The "Transistor" was an LM317 Integrated circuit, arranged to supply a fixed current if the battery volts/condition changes.

  • @luisdacosta1541
    @luisdacosta1541 2 ปีที่แล้ว

    thank you very much for explaining it so simple. i have subscribed your chanel. thank you.

  • @erikpersson3356
    @erikpersson3356 7 ปีที่แล้ว +6

    Hi! I got inspired by your video and made one myself out of an old dvd. Mine does not burn But its bright as hell! I bought a Lm 317t chip and soldered it to the circuit, But i desited to remove it cause it got too weak. So i run it on 3 AAA batteries and no components. I hope that the diode dosen't burn out too soon! I dont now the point of this comment But thanks for the video!

    • @brendonlovejoy2376
      @brendonlovejoy2376 7 ปีที่แล้ว

      What was the polarity on the laser diode? It's hard to tell from the video and I think I accidentally blew my diode from connecting it wrong. Also, if you know, is there a way to check if the diode is broken?

    • @dancurry3142
      @dancurry3142 6 ปีที่แล้ว +2

      if you have a multimeter, most have a diode setting that you can use to determine the polarity of diodes/LEDs. it usually beeps to indicate that you have found the correct polarity. if it doesnt beep when you test both polarities, its broken

    • @gerardvaughan1847
      @gerardvaughan1847 5 ปีที่แล้ว

      @@brendonlovejoy2376
      Use Ohms range to see if it is still a diode, or has melted into a short circuit, or a wobble-bonded lead-in has fused open circuit.
      Always monitor the current using 50mA- 100mA range when playing around.
      If you connect it "wrong way round", unless the supply is much more than 5volts, no harm will come because no current will flow.

  • @smb1397
    @smb1397 ปีที่แล้ว

    at what distance is it safe to look at diffused reflection of the beam (the laser dot on some non-reflective surface)?

    • @okaraaze1087
      @okaraaze1087 5 หลายเดือนก่อน

      so far that theres no point relying on that kind of distance to not hurt your eyes. Basically just dont use it without goggles if you like youre seeing balls :D

  • @RamKumar-hm5lg
    @RamKumar-hm5lg 7 ปีที่แล้ว +1

    Good one sir

  • @Nostrildomus
    @Nostrildomus 7 ปีที่แล้ว +1

    Very good vid . Thanks

  • @cancelik3991
    @cancelik3991 7 ปีที่แล้ว

    Hi, i have several questions for you. I want to build this project but i could not find ncp1529 can you recommend me the similar component of it? How can i find the laser diode list?
    How much power of the laser should be at least for your circuit?
    Does the wavelength of laser effect the power? Thanks already

    • @Palladiumavoid
      @Palladiumavoid 2 ปีที่แล้ว

      Yes, red light carries less energy than blue light.

    • @fazejohncenachristogamerfaze
      @fazejohncenachristogamerfaze ปีที่แล้ว

      @@Palladiumavoid 5 years later lmao

    • @Palladiumavoid
      @Palladiumavoid ปีที่แล้ว

      @@fazejohncenachristogamerfaze took me five years to make it here

  • @CanadianPranks12
    @CanadianPranks12 ปีที่แล้ว

    I wonder if you pair it with an Thermal x-ray what you can do

  • @fatman2407
    @fatman2407 7 ปีที่แล้ว

    can you use 3.3 ohm 3watt?

  • @eivararmero8249
    @eivararmero8249 6 ปีที่แล้ว

    Hi Man, Thanks for share, maybe do You know Why my Laser diode does not have enough power?? I made the exact same conections that You do, the fist time I connected the circuit it powers on like yours but not enough to burn, so I decide reduce the resistor to increase the current but now it it almost not light is produced.

    • @biggusdickus4305
      @biggusdickus4305 2 ปีที่แล้ว

      it's most likely that your diode is gone
      use a Buck converter with current limiter and put voltage to 2.5V and current around 180 to 200mA

  • @sangeethapradeepa4266
    @sangeethapradeepa4266 2 ปีที่แล้ว

    Does the leser diode definitely need model

  • @Amitsa299
    @Amitsa299 5 ปีที่แล้ว

    man your channel logo is too good.

  • @SkillfulMan
    @SkillfulMan ปีที่แล้ว

    nice work

  • @pigfigjig
    @pigfigjig 2 ปีที่แล้ว

    Legend. Absolute legend

  • @jorgecintron8313
    @jorgecintron8313 6 ปีที่แล้ว +1

    That was awesome!

  • @Kam2eLeon
    @Kam2eLeon 6 ปีที่แล้ว +1

    I made a circuit with a lm317 voltage stabilizer as in a film and when it gives a voltage of 4.22V per diode it gets 3.58V and when it gives 9.96V voltage per diode it gets 9.28V . My resistor has exactly 4 ohms. Should it work that way? The electrician in the store told me that this arrangement does not make sense. What should I have voltage on the diode? Please reply .

    • @ShopperPlug
      @ShopperPlug 8 หลายเดือนก่อน

      Yes, there is a voltage drop for the lm317, it consumes voltage too.

  • @sachinpareek9726
    @sachinpareek9726 5 ปีที่แล้ว

    please you give material list of that laser light in the amazon . how i buy that materials which is used in that laser light.

  • @michaelmule4582
    @michaelmule4582 3 ปีที่แล้ว +1

    Can you parallel laser diodes for more pow?

  • @ambientsoda106
    @ambientsoda106 3 ปีที่แล้ว

    Whybus there resustrrs in parallel added to the series circuit?

  • @overpowermedia6192
    @overpowermedia6192 4 ปีที่แล้ว

    Best laser diy ever

  • @dipindersinghdeep6718
    @dipindersinghdeep6718 7 ปีที่แล้ว

    from where did you buy lpc386

  • @ElectronicsInside
    @ElectronicsInside 6 ปีที่แล้ว

    so good bro

  • @juliangelo7271
    @juliangelo7271 6 ปีที่แล้ว

    Will you tell me how to solder the diodes ...please ??

  • @user-js6ey4zo5n
    @user-js6ey4zo5n 7 ปีที่แล้ว

    thank you for this viedo

  • @erajayyadavetah2768
    @erajayyadavetah2768 5 ปีที่แล้ว +1

    Sir I want to purchase this

  • @derpyturtle4708
    @derpyturtle4708 4 ปีที่แล้ว

    Can you use a 3.7V battery with the lm317 and the 3.3 ohm resistor, and put it all into a flashlight housing?
    Pls answer.....
    Thanks

  • @user-dj8nm1ve5s
    @user-dj8nm1ve5s 2 หลายเดือนก่อน

    Sir this project is available to buy sir

  • @shizukayoshino669
    @shizukayoshino669 6 ปีที่แล้ว

    hey dude how many volt can laser handle?

  • @stardelta6532
    @stardelta6532 3 หลายเดือนก่อน

    What gogles do you use

  • @jassiahir7715
    @jassiahir7715 5 ปีที่แล้ว +5

    Its good enough please make it clear video to under stand

  • @pierredessage5530
    @pierredessage5530 ปีที่แล้ว

    Merci beaucoup pour tout!!!.

  • @becky5760
    @becky5760 7 ปีที่แล้ว

    Do you know what Wattage the beam will be?

  • @biswajitborah4152
    @biswajitborah4152 5 ปีที่แล้ว

    ow nice video. nice work this powerful lasar

  • @mrinmoybaruah1620
    @mrinmoybaruah1620 2 ปีที่แล้ว +1

    Can I use 10 k resistor?

  • @sapnar.b.singhsingh7411
    @sapnar.b.singhsingh7411 5 ปีที่แล้ว

    Is there any lens in front of burning laser diode

  • @romanbernal6684
    @romanbernal6684 6 ปีที่แล้ว

    can you use a 300 mw diode?

  • @tworkman3181
    @tworkman3181 5 ปีที่แล้ว

    Does it have to be a red light? We tried with a violet light, but it wasn’t very strong. We used a 6 volt battery. Do we need a stronger one.

    • @gerardvaughan1847
      @gerardvaughan1847 5 ปีที่แล้ว +1

      It has to be a half watt laser, supplied with about 150mA - 300mA. Any more and you might melt it.

  • @evolutionvn5326
    @evolutionvn5326 5 ปีที่แล้ว

    how strong of each, can it reach 200C for 10s ?

  • @knockmyfeeling
    @knockmyfeeling 7 ปีที่แล้ว

    what is that tool to connect wire..

  • @himangsudas5857
    @himangsudas5857 7 ปีที่แล้ว

    @how to do if laser light is GREEN instead of red will it work?

  • @dipscreations7531
    @dipscreations7531 2 ปีที่แล้ว

    which DVD drive do you use name, please.

  • @Linktw0
    @Linktw0 4 ปีที่แล้ว +7

    Do you happen to have any info about what kind of temperature you can achieve using a battery powered setup like this?
    Have you ever done any thermal measurements of a surface that's directly hit by the beam?
    I understand that the actual temperature reached is mostly related to the physical material properties of the object and for how long it's been absorbing the light's energy, but I'm just interested what a simple diode on a lithium cell could be capable of in terms of cutting through/into certain materials. (more specifically: can a setup like this ignite a small spot on a piece of charcoal before the battery is drained you think?)

    • @bianellhuerta4570
      @bianellhuerta4570 8 หลายเดือนก่อน

      Did you ever find the answer?

  • @rekogoolgo5959
    @rekogoolgo5959 3 ปีที่แล้ว +1

    You are amazing please tell me
    IF I WANT TO BUY COMPONENT TO MAKE CUTTING LASER FROM WHERE AND DATA SHEET
    AND PRICE 🙏 🙏 🙏 🙏 🙏 🙏 🙏 🙏 🙏

  • @mediumsmoke8047
    @mediumsmoke8047 3 ปีที่แล้ว

    Question: My LM317 has MAR 1612 instead of 1412, will this affect it?

    • @paulsmith7337
      @paulsmith7337 2 ปีที่แล้ว

      No that is just a MFR date.

  • @MACFiFth
    @MACFiFth 2 ปีที่แล้ว

    Can i use a 2x1.2v (2.4v in total) AAA battery for the laser?
    I just heard that the dvd laser was 2.5 or 2.4 volts in the internet

    • @danielsabolchick5297
      @danielsabolchick5297 2 ปีที่แล้ว

      Im not exactly sure, im 45% sure it would work, but just don't be excited for it to burn stuff because it probably wont be able to.

  • @Z1nFab
    @Z1nFab 6 ปีที่แล้ว

    Hi great video, I want to make this and the engraver, how would the circuit differ if I wanted to use a 12v PSU?

  • @jimparsons6803
    @jimparsons6803 2 ปีที่แล้ว

    Liked the interesting power supply.

  • @innovators
    @innovators 2 ปีที่แล้ว

    more power full red or ir please help me

  • @leondeblaauw2082
    @leondeblaauw2082 7 ปีที่แล้ว

    can you use the standerd 18650 battery with the first sercit you show?

    • @johngardiner8847
      @johngardiner8847 7 ปีที่แล้ว

      Leon de Blaauw sercit?!? Tf man, learn to spelling correctly (sarcasm)

  • @mubeenahmed1858
    @mubeenahmed1858 6 ปีที่แล้ว

    What voltage can give

  • @shivaylabs2903
    @shivaylabs2903 6 ปีที่แล้ว

    NICE TECHNO

  • @richieachie4028
    @richieachie4028 4 ปีที่แล้ว

    Can you add this to CNC

  • @chronocr7232
    @chronocr7232 2 ปีที่แล้ว

    Can I fix the DVD laser diode in the laser housing

  • @luisantoniomarrega1120
    @luisantoniomarrega1120 6 ปีที่แล้ว +2

    Ficou excelente, eu tenho dois diodos destes guardado numa caixa e até hoje não fiz o experimento. Rio RJ Brasil

  • @wolverton2658
    @wolverton2658 6 ปีที่แล้ว

    laser module & laser diode can i buy these items from hardware store

    • @magic1wizard
      @magic1wizard 6 ปีที่แล้ว

      Saiyan Confident highly doubt it, but you might find it at a place that sells surplus science equipment.

  • @abhimanyu_bhagat15
    @abhimanyu_bhagat15 7 ปีที่แล้ว

    that lesser is amazing

  • @worldoftanks3743
    @worldoftanks3743 7 ปีที่แล้ว

    Can I make this circuit but instead of the 4 AA's use 2 3.7v 16340s?

  • @davidmayhall9381
    @davidmayhall9381 6 ปีที่แล้ว +1

    That's cool I removed a laser from a laser disc player. the discs was as big as 75s . I mounted the laser in a cardboard tube with battrys. it would light up the clouds

  • @estoymas9622
    @estoymas9622 4 หลายเดือนก่อน

    so, 1.5 v or 6v ?

  • @bonelessvegetal818
    @bonelessvegetal818 5 ปีที่แล้ว

    Do they cause 2 degree burns