Wind Up Torch Hand Cranked, Dynamo, LED Amend
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/ technology workshop living food play outside Wind-up torch hand cranked, dynamo, LED -Amended- by Wonko the sane on December 17, 2006 Table of Contents Wind-up torch hand cranked, dynamo, LED -Amended- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Intro: Wind-up torch hand cranked, dynamo, LED -Amended- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Step 1: The dynamo crank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Step 2: The little red LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Step 3: The little red LED who could... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Step 4: Let there be light! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Step 5: The schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Step 6: The dynamo crank unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Step 7: The dynamo crank unit, side on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Step 8: The dynamo unit face up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Step 9: The gearbox end-on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Step 10: Probably not the last step... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Related Instructables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Advertisements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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Wind Up Torch Hand Cranked, Dynamo, LED Amend
Transcript of Wind Up Torch Hand Cranked, Dynamo, LED Amend
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/
technology workshop living food play outside
Wind-up torch hand cranked, dynamo, LED -Amended-by Wonko the sane on December 17, 2006
Table of Contents
Wind-up torch hand cranked, dynamo, LED -Amended- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Intro: Wind-up torch hand cranked, dynamo, LED -Amended- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 1: The dynamo crank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 2: The little red LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 3: The little red LED who could... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 4: Let there be light! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 5: The schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 6: The dynamo crank unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 7: The dynamo crank unit, side on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 8: The dynamo unit face up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 9: The gearbox end-on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 10: Probably not the last step... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Related Instructables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Advertisements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/
Intro: Wind-up torch hand cranked, dynamo, LED -Amended-Parts list
A white 5mm LED. I think it's 2000mcd, it came out of my junk box.A red 3mm LED - high brightness. Optional. Lights when the capacitor is being charged by the dynamo.A 1 Farad, 5.5 Volt capacitor.A hand held crank dynamo. I got it at Jaycar electronics. I think the motor/gearbox from a simple toy car would probably work just as well.It puts out about 5 Volts at top speed, so I thought it was a good idea to use a comparable capacitor.
Lots of patience. And coffee. And ciggies.
The switch stops the capacitor from discharging straight into the white LED, that would make it a hand-cranked light, and not a wind up, to use hands free, torch.
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/
Step 1: The dynamo crankThis is the dynamo crank. Turn the handle on the side and the gears turn the dynamo, and through the magic of science, electricity comes out...
Step 2: The little red LEDThis is the little red LED not lighting because it's really hard to crank the dynamo and take photos at the same time.
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/
Step 3: The little red LED who could...This is the little red LED being a team player, and lighting, to show I'm cranking the dynamo...
Step 4: Let there be light!I plug the red wire into the negative terminal strip (because I'm too cheap to use a switch in something I'm only breadboarding), and Presto! Light!Not bad for a cheap white LED, around 2000mcd I think.
Step 5: The schematicThe amended schematic, showing the (optional) red LED facing the right way.Sorry about the mistake, my bad.
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/
Step 6: The dynamo crank unitThree photos that may make it a bit clearer as to how it works.First, the unit side on.
Step 7: The dynamo crank unit, side onConventionally, power is applied to a motor, through the solder tabs, turning the motor and the drive shaft.The dynamo crank works in reverse, turning the drive shaft and the motor, and supplying power through the solder tabs, to the circuit.
Step 8: The dynamo unit face upTurning a motor spindle by hand, to generate power, is not as efficient as using a gearbox, unless you have plenty of time...
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/
Step 9: The gearbox end-on.A blurry photo showing the gearbox end on.As you might be able to see, the gearbox is used to turn the drive shaft of the motor.
Step 10: Probably not the last step...I've had to amend the schematic because I'd put the red LED in the wrong way around.Thanks to LasVegas for pointing that out.
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Comments29 comments Add Comment
Joelson Filipe says: Mar 21, 2012. 10:31 AM REPLYwill a normal toy motor really work??? im not sure.....plz comment/reply
LasVegas says: Dec 17, 2006. 10:04 PM REPLYYour small LED is backward in the schematic.
Wonko the sane says: Dec 17, 2006. 11:11 PM REPLYThe small LED has to be backwards. It's to stop the capacitor discharging back into the motor. It looks wrong, I know, but it does work.
LasVegas says: Dec 18, 2006. 12:11 AM REPLYThat's what I mean. It has to have the cathode (flat side) on the positive side of the capacitor to allow charging of the capacitor and prevent dischargethrough the generator. If you follow the path of discharge with the switch off, you'll see that the schematic has both LEDs with the same polarity.
LasVegas says: Dec 18, 2006. 2:13 AM REPLYYou built the circuit right. You just made a minor error on the schematic. The attached (corrected) schematic shows the charging path of current(blue) and the discharge path (red). As you can see, as in any diodes, current flows into the LED's cathode against the arrow. This is a carry-overof the pre-transistor belief that current flowed from positive to negitive.
kanpur says: Aug 22, 2010. 8:48 PM REPLYthanks and please launch the right schematic or instructables
Wonko the sane says: Dec 18, 2006. 4:47 AM REPLYThanks. I stand corrected. I'm not too bad with a soldering iron, but my theory work is terrible. Appreciate the input.
davidprosser says: Feb 24, 2008. 2:21 PM REPLYWhere can you get these capacitors!!! I can't find many suppliers in the UK, so if anyboady knows of any cos i really gotta get my hands on some (Or if anyoneknows what electric appliances have these caps in). Or i think some USA company could ship one to me.....
wizzywoo says: Dec 7, 2009. 7:55 AM REPLYhave you tried maplins or Radioshack altho i think raidio shack is american
dean-101 says: Mar 5, 2008. 9:05 AM REPLYhey, you can get double layer 5.5V 1F Super caps for 3.68 on this site in the UKwww.maplin.co.uk . i got one and charged it via usb for 3 minutes and it kept an ultra birght blue LED on without a resistor for over 4 hours before goingvery dim but it was still on.this is the link i got mine on http://www.maplin.co.uk/Module.aspx?ModuleNo=98185&criteria=5.5v%20&doy=5m3
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/
davidprosser says: Mar 21, 2008. 5:00 AM REPLYThankyou so much dean-101! i shall get one bought for me lol as its my birthday on the 24th! :) thanks
dean-101 says: Mar 22, 2008. 6:04 PM REPLYno problem. if you are also loooking for cheap leds or resistors goto ebay and find a shop called "sure electronics" they sell 100 ultra bright LEDSwith resistors for 10 and you can get blue, uv ,red ,green or white. they also sell Micro controllers, solar cells, laser, tools and everything to dowith electronics very cheap.
Derin says: Apr 25, 2009. 11:43 PM REPLY+ for details - for mention of cigarettes
InfamousKirch says: Apr 30, 2009. 10:14 AM REPLYUhm... what's the issue with mentioning cigs, it's one word in 10 pages of instructables ... @least he didn't dedicate a whole article on such an apparentlyoffensive subject.
geeklord says: Dec 27, 2008. 3:44 PM REPLYWhy isn't there any regulation??? Wreck your LED's.
matroska says: Nov 18, 2008. 5:36 PM REPLYWait, tell me if I'm wrong, the dynamo is basically an electric motor that you turn so electricity is produced?
I really thought dynamo's were something totally different (if I'm right).That means I can use any electric motor I have here and use it to power electronic thingys? That'd be cool (try dismantling an old matrix printer, LOTS ofuseful motors in there. ..too much in fact)
djr6789 says: Dec 12, 2008. 9:47 AM REPLYit works on most dc motors but not sure about ac motors
geeklord says: Dec 27, 2008. 3:43 PM REPLYAc motors have two coils not one coil and a permanant magnet, so no it would not work.
shawon says: Oct 9, 2008. 8:10 AM REPLYhey can i use a rechargeable battery instead of the super capacitor??? Super capacitor is not available in local market...
BeeblebroxTheHalfth says: Sep 2, 2008. 1:51 AM REPLYcan anyone tell me where to get super bright leds in india, specifically in bangalore? all we get are dim red ones like the one you,ve used in the chargingindicator
Artificial Intelligence says: Apr 22, 2008. 11:34 AM REPLYNice, how long does the LED stay lit on a capacitor charge?
assasinzEX says: Mar 19, 2008. 7:16 AM REPLYgood job ure helpin me on my science project congratz to all helped u...wakakaka
Wonko the sane says: Jan 8, 2007. 11:04 PM REPLYI thought I was clever, making this. Then I found this - a wind up torch using a servo motor. I'm impressed.tearsoffire.org/twiki/bin/view/Projects/WindupFlashlight
Mike060187 says: Jun 3, 2007. 11:25 AM REPLYyo... nice link for the servo led thin... its awesome =)
electronicfreak22 says: Feb 7, 2007. 7:57 PM REPLYI made something like this only the crank was attached to a sooped up air hogs engine hooked up to co2. Its pretty cool and at top speed it can charge alantern battery. I was going to post it but I forgot to take pics in the process.
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http://www.instructables.com/id/Wind-up-torch----hand-cranked%2c-dynamo%2c-LED---Amend/
Crash2108 says: Dec 17, 2006. 3:27 PM REPLYIn theory, could you wire it up so you spin the motor, then the motor starts spinning? Wouldn't that be just a plain, simple hookup with the capacitor?
Wonko the sane says: Dec 18, 2006. 12:11 AM REPLYGood to see someone's looked at the circuit/unit, and thought'I wonder if I could make this better...'. I've put up three more photos of the crank unit, andsome more notes. I hope that helps. Because the motor runs 'backwards' to convention, I don't think you could wire it up. The circuit needs the LED, or adiode to stop the capacitor draining back into the dynamo, and making it run. It is funny to watch the crank handle turning on it's own, though. Kind ofspooky... If the capacitor drains back into the dynamo, there's no power to light the white LED. And that defeats the purpose of the exercise.
mycroftxxx says: Dec 18, 2006. 11:12 PM REPLYI am not a electronics person, but have you looked at the diagrams of BEAM Robotics "Solar Engines"? They should work fairly well for poweringdynamo-flashlights. If I remember correctly, the circuit uses a transistor and a diode to keep power from going to the source, and withholds powerfrom the load until a certain voltage level has been met. Something along those lines should work here
Ian01 says: Dec 21, 2006. 2:38 PM REPLYThere are various types of solarengine.http://solarbotics.net/library/circuits/se.html
