World's First Pull Start Lamp - Batteries not Included/Needed

[@jakefarm1766]

LaserSaber is back 😁😁😁🎉

[@lasersaber]

Yes!

[@dlrowle]

@@lasersaber Way cool dude, a question maybe some chrome paint or reflective tape on the bulb, could help with the light striping and boost up the luminosity radius, always looking forward to part 2.

[@Leo99929]

@@dlrowle counter intuitively white paint is often more reflective than shiny things. Just diffuse rather than specular so you can't see an image in the reflections. In a situation like this that might be desired.

[@dlrowle]

@@Leo99929 Thank you, great video I love the way you think.

[@Tore_Lund]

We are happy he didn't power it with 20,000 Tritium vials.

[@UnforeseenLife]

So happy to have you back! I really like your explanation of the SJR circuit and how it works.

[@lasersaber]

I am glad the explanation was helpful. Thanks for watching.

[@vitacell1]

It's just Alexander Romanov's cacher. Really good and simple device.

[@vitacell1]

@@lasersaber You can add an crystal radio receiver for boosting.

[@philipvecchio3292]

The King is back with his Laser Saber, Long live the King!

[@Brett-ui9zq]

Mount one with a smaller capacitor from the ceiling in a garage, pantry, bathroom, or other rooms that are often only used for a few minutes. You walk in, one good tug down on the cord, and you get 5 minutes of light.

[@mememaster147]

literally the GravityLight

[@MZ-nw7wz]

@@mememaster147 It's been out of stock for two years? That GravityLight?

[@CrunchyLimes]

Absolutely awesome project and seriously amazing work on this!! Welcome back LaserSaber!!! 🧡

[@lasersaber]

Thank you! I will keep experimenting with it.

[@revbikerbigd8664]

This lamp is amazing ! I own a flashlight that you shake that does the same thing. Got it about 20 years ago. What about using those square yellow LEDs??? I can't wait to see your next improvements to it. 👍🙏

[@easydoesit2006]

Awesome light, now you need to print a small gearbox with a fly wheel arrangement and include a crank tp spin it up. Then add a secondary coil with an single throw double pole switch so you can charge one then click the switch and feed off the other one so your light will run two hours.... Possibilities 😊keep up the great work.

[@lasersaber]

Cool ideas! Thanks for sharing.

[@michelsbench]

Thanks LaserSaber for making those videos, it’s very heart warming to see the number of people researching other ways to produce cheap and usable alternative energy.

[@AlamShamma]

Woudn't be better if using the flexible LED strip instead of the separate LED configuration?

[@lasersaber]

I would like to find something like that. It would be much easier, but I have not found a match for the white LEDs that I am using yet.

[@Patschenkino]

LED-Light-Strips, you can find it with different densities. Another possibility would be disassembling a regular LED-lamp, like one of those corne lights. If your lucky you also get a reflector and diffuser out of it.

[@psy0rz]

The bounching voltage might be just hf. Check it with an oscilloscope to see whats actually going on. Your voltmeter might get confused.

[@simontillson482]

Yep. I was thinking similar. If the frequency gets in sync with the meter’s sampling rate, it will read different - either higher or lower. There’s bound to be a large ripple, so the meter is desperately trying to give a reading, but can only measure what it sees when it is sampling, which is a tiny period of time a few times a second. You could filter the probe leads by putting a resistor in series with one lead and a capacitor across the meter end (say 10k and 1uF) to get a purer DC reading. I bet these anomalies would just go away…

[@DanielKesslerer]

Wow! Much potential with this project. Keep going this is inspiring!

[@lasersaber]

That's the plan!

[@shad0wburn3d]

If you take some aluminum and use that as the space filler on the sides of the LED lights, the gaps in the light where shadows are casted will be gone😁

[@lasersaber]

Excellent idea.

[@Ethan-gu9hm]

@@lasersaber Or wrap the plastic base with aluminum foils for a lower cost option

[@grabasandwich]

Couldn't you just print a base with collimators around each LED? And make it out of a silvery shiny plastic or chrome paint/plating.

[@philipvecchio3292]

I am a little curious, why did you choose to make your own LED array rather than finding one off the shelf that would work? I feel like the real innovation is the charging and the storage.

[@Genghisbeard]

He had. See previous videos.

[@I_love_electricity]

I can't wait to see the how to video on the coil. I think this technology is absolutely paramount for apocalyptic applications! Please notify me asap when the how to video is uploaded. This can save many lives.

[@marcojustiniano7498]

great stuff, have you considered building a gravity generator with the SJR as a core?

[@lasersaber]

I had not, but that is a great idea.

[@milkrecu]

The community you inspire is dedicated and vast. Keep being you

[@ArthronOfFir3]

Might say you can use a defuser to spread the lighting more evenly. And considering you made something for those affected by blackouts or weather issues (hurricanes and typhoons) I recommend to find SMD LEDs that are brighter than the ones you use though this will introduce the need of a heatsink.

[@grabasandwich]

Yeah, these ones remind me of the early days of LED flashlights. They were terrible!

[@liannblack2427]

This is amazing and if scaled up it can possibly run hydroponic set ups for led lights on black outs. If anyone is trying to be self sufficent growing indoors for your own food crops and medicinals. Inspirational to see someone put their own thoughts to fruitful labour and success

[@arjenchristianhelder1027]

you could use more efficient leds from luminus, their 3030 range has some really high efficiency, all be it on lower CRI. also i think you could probably get an IC with a higher conversion efficiency that accepts up to 40V (check allegro) if you get them that are efficient with not too many in series you can draw the caps down quite a bit. if you can find a sepic one it can do buck and boost, then you can draw them down to probably 3V or less, using most of your capacity. super caps that are big are recommended for their huge storage capacity that can be 3000uF! they run up to 3V and can be put in series with the usual consequence (you lose 50% capacity with 2 in series)

[@Convolutedtubules]

Really cool. Would be nice to be able to unfold the bulb into a different arrangent, focusing the light onto or away from particular areas.

[@joebloe9901]

Great light for camping...although you'll need to make a bug zapper to go with it. Awesome project.

[@CTimmerman]

Maybe the high pitch whine is enough to annoy the bugs away.

[@grabasandwich]

@@CTimmerman Imagine what other animals like dogs or wolves must hear! oof

[@NandR]

Great emergency light. Glad to see you still pumping out super efficient designs. I wonder how hard a foot petal design would be. It would definitely be bulkier but as something I could just walk by and step on that would be handy.

[@lasersaber]

That would be cool!

[@thevoidedwarranty]

You can saturate the coil with melted wax or potting compound or acrylic laquer to make it quiter

[@fasihahmed6124]

Very good project, your SJR circuit compare to joule thief circuit is very simple , i follow you when i was young college boy , now i am professional electrical engineer in my 30s , past 10 years , i noticed that your projects are discussed in different forums

[@joeanon1415]

The highest efficiency commercially available LED's I'm aware of are Samsung's LM301B's (Wattage 0.2W, Forward Voltage 2.71 V, Luminous Flux 38.8 lm, Luminous Efficacy 220 lm/W)

[@lasersaber]

Thanks for the tip!

[@lorenbush8876]

That's neat, I'm glad you used the retractable pull crank, I tried to get Robert Murray-Smith to do his pull crank generators like that but I don't think he ever did. Thanks man that is really cool.

[@demandred1957]

Thats neat, welcome back! I finally have the super caps sourced to build your car battery re-placer. all these years later, I may be actually building it.

[@lasersaber]

Very cool. Best of luck with the caps for your car.

[@hydniq3327]

I'm glad your bringing the SJR circuit back on yt . I just started working with it again also . Great video

[@lasersaber]

Cool, I will check it out.

[@hydniq3327]

It might help with your project .

[@xsbiggy6349]

Should look at alternating the leds position that way you reduce dead spots and hot spots

[@DaNargh42]

This is wicked. I remember in Army cadets some of the guys would bring those wind up torches that they would lose interest in because they had to give them a spin every 15 mins or less. I wouldn't mind seeing this SJR system in more of a compact torch size, much like a dolphin torch but maybe the size of a car battery.

[@gregstafford2155]

Great to see you back. One tip you should use a brushless motor with three phase rectifier! Just find the right size motor like a 100kv RC motor or lawn bl motor.Then will have more charging and less work to charge it.

[@DeanLogan]

This is so awesome. It would be a great light to integrate into a chuck box.

[@milesprower6641]

You can also try fillimant leds

[@ronrothrock7116]

I like the design. Perhaps adapt a foot lever/pedal for charging? Something like a foot-powered bicycle tire pump?

[@imark7777777]

There are other types of LEDs other than 5 mm LEDs. You can get some of those LED strips filament things there's all sorts of things out there which would be easier to work around in build into casing.

[@justtinkering6713]

So I have solar garden lamps that charge from the sun, use a single AA Nimh cell and light up my workshop for 8 hours. How is this better?

[@frumbert]

This would be great for remote rare use situations such as in mines and machine storage lockers, where it is often hard to address permanent power solutions.

[@HaLo2FrEeEk]

To save having to assemble the LED bulbs manually, maybe you could order flexible PCBs and have them pre-populated with surface mount LEDs, then you could just glue the flex PCB to a bulb shell. I love this idea so much, I've experimented with this kind of stuff myself and this is really beautifully executed. Well done!

[@pauljs75]

COB LED arrays would be even more ideal, since the goal here is for a flood light spread.

[@HaLo2FrEeEk]

@@pauljs75 That's a good idea! LED filament would also work, you can coil that stuff and throw the light all over!

[@blandman3471]

Excellent video. Because this is such an efficient circuit, maybe it can be charged with a thermopile - using waste heat from your dryer or the back of your refrigerator.

[@Narcissus-q8n]

Nice! Since the legs produce more force, do you think you would be able to design a kind of compact unicycle generating lamp like that?

[@dbzkings2626]

Super capacitors are so cool. I wonder if you could make a tap torch. A small handheld torch that can be recharged with a tap from a wireless charging source.

[@2550marshall]

Very cool Laser Saber! I remember many years ago making my first and only Joule Thief circuit. I didn't have a ferrite core, so I just used some iron wire wrapped around a rubber grommet. The odd thing about it was that it did not work with the resistor in the circuit, but it did work without the resistor.

[@deltab9768]

Glad to see you’re still on here making interesting devices.

[@WCO3]

The legend amongst the legends has returned. With more legendary sht

[@shawn_hope]

i would love to build one of these looking forward to the how to video

[@OldManJimmy1]

Great video, bet the charger would do well with an added flywheel.

[@GuardianEngraving]

huh so its the transistor, I have noticed this happening a lot in my build ( 4:30 ), thank you. Good to see some more builds from you mate. Keep on rockin.

[@Chris-ch5nb]

That’s really neat! I’d like to see it with selectable brightness or selectable lights (only illuminate in one direction or a focused beam. And an off switch.

[@Vikingwerk]

This reminds me of the hand-crank emergency power in the movie ‘Pandorum’ I always wondered if something like that would be remotely possible. Seems like it might be!

[@pauljs75]

Would be cool to integrate this setup into a door closure mechanism. Many cases where you open a door into a storage area and only need a few minutes of light to get something. I could see a market for that.

[@newmonengineering]

As soon as I saw it at the beginning I said it must be a camping lantern! It looks awesome. I would love to build one. It looks very nice.

[@Semparo]

Would be fun to see if it can be made smaller using one of those nitro rc pull starts in the form-factor of something like a 9v flashlight!

[@user-hf3ym7lh4d]

Now *that* is an awesome project, way to go man! Elegantly simple, low cost, and obviously, immediately, practically useful. A cut above the usual YT fare. You probably already thought of it, but it'd be really slick if the caps, lights, and circuitry were a detachable subassembly so you don't have to carry the whole crank box around if you don't want to. One thing though: be careful of your back when you're pulling on that thing, bending over at the waist like that and doing repeated jerking movements puts absolutely massive momentary torque through your lumbar. I've been scolded by a couple bosses for doing things just like that because they don't want problems with L&I and OSHA. Maybe an opportunity to refine the ergonomics of a future version, or even shrink it just a little to something you can pull apart with two hands, no back stresses involved. Best home invention I've seen in a long time, you should get some kind of award. Keep it up!

[@axsanchez1193]

Wowwww this is amazing! Im waiting for the "how to built it" videos. LaserSaber is another level.

[@JohnSeaward]

Finally someone that's actually coming up with something nobody else has out there ! Question have you updated your charge bank system ? And yes want to try ur charge /battery system on a special build I've been in process of doing which I started 15 yrs ago,so that k you for the NEW videos fresh breath of air ! Thanks again

[@Drew_Hurst]

Great work! Excellent in fact! I was an early adopter of using 10-15 watt cob led bulbs to replace ceiling bulbs at home, and have several bulbs with dead electronics but working leds; these would be great to use in place of forming and soldering your own and I don't recall having such dark bands, which were quite noticeable in this design. This could be eliminated/greatly reduced by having say 8 or more flat sides, with more rows of leds on each flat, and only the bottom part of the bulb shape curve in and have say a couplr of rows of two, then one led at the bottom, and utilise the same idea at the top, or just have a flat disc on top with plenty of leds firing straight up, which bounces light off the ceiling, like the commercial ones did. Again great work, excellent application of overcoming the age old problem of using cap. banks. Well done! I keep imagining a Bedini coil running off of a solar/battery pack recharging the caps for a more fixed longer run application. Surprised how long this runs off such a small amount of kenitic energy. Very impressive build.

[@danmurphy5660]

I've been following you for a long time mate and you still never cease to amaze me. Well done, this is a fantastic use for one of your circuits and thanks for sharing it with all of us.

[@ThomasAndersonbsf]

love this, working on a laser formed graphene from paper based super battery capacitor hybrid. I am definitely going to try using something like this for the charging to see how it fairs, along with my thermal to electrical charge generator system based on triboelectric forces of disparate charges (positive and negative charge based triboelectric effect materials)

[@Magneticitist]

I still use the old joule ringer crank light to this day!

[@Muonium1]

Exceptional. Are you familiar with the paper by Yale economist William Nordhaus from the mid 90s on the cost of producing light "Do Real-Output and Real-Wage Measures Capture Reality? The History of Lighting Suggests Not". I believe you would enjoy it. It essentially chronicles the near million-fold reduction in the cost of producing light that humans have achieved since antiquity. With the advent of highly efficient electroluminescence and circuits to power it, our species has essentially mastered the production of light, approaching within perhaps a factor of two of the theoretical maximum efficiency for full spectrum visible light production.

[@lasersaber]

Cool!

[@musikSkool]

I had the idea of a pullstart powered compressor for a pellet rifle awhile back. I like your idea more. Ever since playing Myst several decades ago I have been obsessed with dynamos. I have several flashlights powered by various types of generators and I think your approach is the best. I have thought of using voltage regulators to pull more power from the battery/capacitors, but your approach of using high voltage is amazing. Because when you turn a generator very fast you get more voltage, but not more amperage, so normally that extra voltage would go to waste. This setup lets you store all the energy, and regulate it down to a useable amount. I love every part of this. Good job!

[@absint0o]

wow! this is impressive!!! Can't wait for the in-depth tutorial on how to build this!

[@Zodliness]

@lasersaber - Great build, I particularly like the telescopic extender. 👍 Have you considered spiralling a length of self-adhesive LED ribbon around the head? Ribbon LED's would certainly spread a more even light than individual LED's. With ribbon LED's you would also have the benefit of an IR remote control and essential IP rating for outside use. If you wanted to take it one step further, add a 3D printed cage around the LED head and include a bug zapper! ⚡ This is just my opinion, I could be wrong. 😉

[@kyoudaiken]

The transistor could be leaky causing some boosted voltage to be added to the capacitors.

[@Tomtech29]

interesting project, to improve the generator's efficiency it was enough to ,make gearboxes the rack and pinion gear and equip the generator with polyphase taps bridged with a rectifier

[@Ethan-gu9hm]

Not sure if anyone has mentioned this. Have you considered separating the generator and the lamp? That way you only need one charger to use multiple lamps.

[@circuitblog01]

Good video thanks for posting But I have a guestion : Why is the filling process not done by using pressure, like a tire pump that pumps air through the leg motion instead of the pulling process?

[@BLAZE13011]

I wonder if you put a flywheel on the motor side of the recoil would make the capacitors charge with less pulls

[@Objectivityiskey]

Great concept, now reprint the led holder bit and offset the led's so that their light throw patterns overlap. It's the dark spots that make this device aper less capable than it actually is. This will greatly improve your device. I'll be watching for the production model. I'll buy a few.

[@milesprower6641]

Your current meter measures the average current, try a 1 ohm or less resistor and an oscilloscope to measure instant current / current over time across the resistor (with a multi channel scope you can measure voltage and current at the same time or current/voltage at multiple points in the current at the same time.

[@TravisL.Desmadreson]

Great post! Never stop doing what you do.

[@tomaspecl1082]

That schematic looks funky. The side of the transformer with LEDs which has a connection to the base of the transistor is wierd. How is it supposed to control the base of the transistor? There should be no current flowing to the base as it has no way of flowing and returning back.

[@lezbriddon]

iirc from my torch experiments 1w warm light bead leds run gently give more light than 5mm leds for the same input power, cold white a little more but i'm not a cold white fan

[@showmequick2245]

Any update on this ? This is supercool

[@jimmybrad156]

I wonder if a foot-pedal piezo-based click type generator would be worth considering.

[@Mike-yl6hs]

Would LOVE to BUY one!!! GREAT BUILD!!! m

[@kyoudaiken]

Another improvement would be to check for more efficient LEDs. They are SMD but hey, when it's more efficient, it's always welcome, right?

[@trevorhaddox6884]

It might work better to use a system similar to a dynamo blasting detonator. You spin the dynamo up to speed and a switch mechanically closes sending a surge that dumps all the power to the load (in this case the caps). A centrifugal switch would work.

[@tabelq]

Have you seen those rope-pull replacements with a clock spring? Crank it , release the trigger, start your mower. Could that work here?

[@johnwynne-qx6br]

Wonder if you could use clockwork or solar charged motor to wind it up aswell as pull start very impressive design 😊

[@ShafaqIftikhar-pw9ld]

Absolutely brilliant!!! Glad to see you back!!!!!!!!

[@bearnaff9387]

Since you have a 3D printer, have you considered designing a stomp-powered light? Basically a pedal with a rack on it that (after gearing) drives your generrator?

[@Slider2732_]

A very cool and practical use, with great build quality! Couldn't help but think your carburetor needed adjustment at one point hehe

[@nothingelsetolose7661]

Wow, that's crazy. Amazing.

[@lasersaber]

I agree!

[@daysejones968]

can u use the same tech to make one of those gravity powered lights? I think it would also work great

[@lasersaber]

Yes, that would work well I think.

[@christopherd.winnan8701]

Have you thought about contacting PCBway to act as a sponsor for the LED set ups? This could save you a lot of work.

[@sykoteddy]

This is such a great idea! I certainly hope your kindness of willing to release the building plans will keep you and tyour family content in both economic and safety matters! I hope you also will provide finished products as well as building kits and the complete free building blueprints. 💙👌

[@turboprint3d]

Thought the channel was dead , good to see more lasersaber

[@isaacwhite7411]

needs a diffuser for the light or use diffused LEDs

[@BrokenCircuitRanch]

Pretty neat dude. Congrats on a usable product

[@fissb1]

Very nice project and good idea, I had the same Idea for a charger, I think may be you can look into it. Personally I prefer hand cranked generators, and also something can be build as stationary bicycle. Careful the power companies will stop you from continue 😂

[@martinlicht1969]

Nice work! Maybe a protective cage for that bulb you worked so hard for❤

[@gpo746]

Excellent work ! These could be put into commercial production ! I would buy one ! However, I would be very interested in making one ... with warm white LEDS though

[@willyouwright]

The invasion here is mostly the high voltage running an efficient voltage regulator. I'd personally use a cob led element from existing bulbs..

[@sirblingjax]

Hey lasersaber I don't know how old you are to remember this movie called journey to the center of the Earth. In the movie they were planning on going down to the center of the Earth but that they would need special gear and a unlimited light source. As they were going through the various shops buying various mountain gear they came across a light that you can charge by hand mechanically and would stay awake for hours on end. And when the power would drop down below a certain threshold they could recharge it back up again by hand and never have to use any kind of batteries again. It was perfect for the expedition. Theirs has been a number of remakes of this movie over the years you want to watch the very first one if you can find it. Check it out when you got sometime. It was a pretty cool movie especially the very first one it was made I believe in the seventies. Thanks for your time you have a great day. I always enjoy watching your videos keep up the good work I'm glad you're back!!

[@Lolatronn]

Some feedback for the bulb it self is maybe stagger the rows of leds for a more even coverage around with the focused bulbs. Other wise fantastic project you have!

[@Kawka1122]

Why you didn't wanted to use off the shelf DC/DC converter chip? They reach like 95 percent efficiency from for instance Texas instruments.

[@dethkiler1666]

On the light I suggest you put a diffuser on it to spread the light out more. I think you could use a milk jug to do it if you happen to have one. While that will dim the light a bit, it will shoot out the light a bit more evenly around the space you are in, and make it a bit safter to look in its general direction. Also SELL this. Lots of people would buy it. To make it a bit better, and dummy proof it I suggest you add a green LED to indicate that it has reached max charge, a red LED to indicate that it is getting low, and will need a couple more pulls.(I know this may add a fair bit more complexity and add to power draw but I don't think it will be to much to add.)

[@zzzzz2343]

Did you ever figure out how to get the atmospheric generator to create a torque?

[@mrln247]

Really interesting project, great potential for a work site light. But word of caution if your running the LED's direct off of AC I have been totally messed up ill (motion sickness style nearly vomiting in the end) from working by an LED torch late through the night once, although I haven't thoroughly tested it I put that down to a very noisy AC circuit even if it was just off qn 18v battery and even if you can't directly see a flicker I now believe it can affect people. I'm not someone who particularly notices any of the grid AC LED bulbs now but whatever frequency the torch was running at messed me up. So my suggestion is even if you have to sacrifice efficiency some strong filtering should be looked at trying to run as close to DC as possible. Or get a good sample of people to see if uou can nail down any "bad" frequencies.

[@oxiigen]

Glad to see you back with your amazing project that you kindly share! Sharing is caring! Thank you man!