led fireworks

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http://www.instructables.com/id/LED-Fireworks/

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LED Fireworksby vahid_you2004 on September 6, 2010

Table of Contents

LED Fireworks ................................................................................................................

Intro: LED Fireworks ........................................................................................................

Step 1: Things You Need ....................................................................................................

Step 2: LEDs ..............................................................................................................

Step 3: The Circuit .........................................................................................................

File Downloads ...........................................................................................................

Step 4: Soldering Components Together .........................................................................................

Step 5: Making a PCB .......................................................................................................

File Downloads ...........................................................................................................

Step 6: The Motor ..........................................................................................................

Step 7: LEDs Disk ..........................................................................................................

Step 8: Attaching Circuit and Battery ............................................................................................ 1

Step 9: Final Assembly ...................................................................................................... 1

Step 10: Safety ............................................................................................................ 1

Step 11: Fire! ............................................................................................................. 1

Related Instructables ........................................................................................................ 1

Comments ................................................................................................................ 1
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Author:vahid_you2004 Visit dihav.com

I'm a mechanical engineer, and I like computer programming, mechanics, electronics and specially the robotics.

Intro: LED FireworksNowadays technology changed everything. Things that have been made many years ago are nowappearing in a new formwith new and modern parts.So I decided to simulate fireworks with LEDs andmade a machine that makes LED fireworks.It works simple, there are a lot of LEDs thateveryone isconnected to a capacitor with a resistor, the machine charges the capacitors and a timer drives a motorthatstrews them around.

Step 1:Things You NeedTo make your own LED fireworks machine you need the following things and tools:

Some colorful LEDsSome 1K resistorsSome 470uF capacitors (or higher)Two plastic disksSome screws with boltsA long narrow plastic strip1x1N4007 Diode1x1N4148 Diode

2x 100nF ceramic capacitor1x TIP122 transistor1x 50K potentiometer1x 33K resistor1x 100K resistor1x 100uF electrolyte capacitor1x 3.3uFelectrolyte capacitor1x BC547 transistor1x 555 IC + socket1x Simple pushbutton1x Small motor1x 9V battery + connectorSome wireFoilDrillScrew drivers
http://www.instructables.com/id/LED-Fireworks/http://www.dihav.com/http://member/vahid_you2004/http://member/vahid_you2004/


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Soldering ironSoldering oilSoldering wireGluePliersWire cutterA bubble bagThings to make a PCB (if you want to have a circuit board)

Step 2:LEDsJust solder each LED to a 470uF capacitor with a 1K resistor among them.


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Step 3:The CircuitThereare two timers, one for a short delay before starting the motor and strewing LEDs (about 0.5-3.5 seconds) and one for stopping the motor after a while (about 5seconds).The first delay can be changed with a 50K potentiometer.You can make this circuitby soldering components together (step 4) or by making a PCB (step 5).

File Downloads

LED Fireworks.DSN (45 KB)[NOTE: When saving, if you see .tmp as the file ext, rename it to 'LED Fireworks.DSN']

Step 4:Soldering Components TogetherThe best way to make circuit by this method is to follow the circuit diagram.The images may be confusing.

Solder pins 2 and 4 of IC socket together.1.Solder pins6 and 7 of IC socket together.2.Solder the 33K resistor among pins7 and8 of IC socket.3.Solder the 100K resistor among pins4 and 8 of IC socket.4.Solder the100uF electrolyte capacitor among pins 1 (-) and 6 of IC socket.5.Solder theBC547 transistor among pins 1 (E)and 2 (C) of IC socket.6.Solder the TIP122 transistor among pins 3 (B) and 8 (C) of IC socket.7.Solder the100nF ceramic capacitor among pins 1 and 5 of IC socket.8.Solder the3.3uF electrolyte capacitor negative poleto pin 1 of IC socket.9.Solder one of the side legs of50K potentiometerto 3.3uF electrolyte capacitor positive pole.10.Solder the middle leg of 50K potentiometer toBC547 transistorbase pin (B).11.Solder the push buttonamong pin 8 of IC socketand 3.3uF electrolyte capacitor positive pole with two wires.12.Solder the power supply to the pins 1 (-) and 8 (+) of IC socket.13.Solder a wire to TIP122 transistor emitter pin (E) as the motor positive pole.14.
http://www.instructables.com/files/orig/F2R/RY7G/GDRPHIQ6/F2RRY7GGDRPHIQ6.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/F2R/RY7G/GDRPHIQ6/F2RRY7GGDRPHIQ6.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/F2R/RY7G/GDRPHIQ6/F2RRY7GGDRPHIQ6.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/F2R/RY7G/GDRPHIQ6/F2RRY7GGDRPHIQ6.tmp?utm_source=pdf&utm_campaign=files


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Step 5:Making a PCBHereis a good instructable that will guide you to make a PCB.

Print the boardimages on an A6 glossy paper with a laser printer without scaling.1.Cut a piece of copper board in the size of printed board images.2.Clear the copper side of the board from oxides with sandpaper.3.Put the both sides of printed circuit on the board and fix them with paper tape.4.Put the board between some pieces of paper and press the hot iron (without steam) on it for a while. (BE CAREFUL: The hot iron may lead to firing of papers)5.Remove the printed circuit of the board.6.Soak board in a bowl of circuit board acid and wait till all the visible copper disappears. (BE CAREFUL: You are working with acid)7.Wash the board and clear it with sandpaper.8.Make holes with 1mm drill.9.Solder components on the board.10.

Here is the list of board components:

R1 = 33K ResistorR2 = 100K ResistorP = 50K PotentiometerC1 = 3.3uF Electrolyte CapacitorC2 = 100uF Electrolyte CapacitorC3 = 100nF Ceramic CapacitorU = 555 ICQ1 = BC547 TransistorQ2 = TIP122 TransistorBTN = Simple PushButtonMOTOR = Small Motor

File Downloads

LED Fireworks A6.pdf ((298x420) 54 KB)[NOTE: When saving, if you see .tmp as the file ext, rename it to 'LED Fireworks A6.pdf']

LED Fireworks.LYT (13 KB)[NOTE: When saving, if you see .tmp as the file ext, rename it to 'LED Fireworks.LYT']

LED Fireworks Top.wmf (18 KB)[NOTE: When saving, if you see .tmp as the file ext, rename it to 'LED Fireworks Top.wmf']

LED Fireworks Bottom.wmf (12 KB)

[NOTE: When saving, if you see .tmp as the file ext, rename it to 'LED Fireworks Bottom.wmf']Step 6:The MotorAttacha piece of plastic pipe (I cut it from a pen) to the end of the motor to avoid pressure on the motor shaft.You need two strips of plastic approximately 9cm long to hold the motor, battery and circuit.Attach and fasten the motor to the plastic strips with glue and some wire.Solder the negative power supply to the one of the motor terminals, solder the positive power supply to the motor body and solder the wire coming from the TIP122transistor emitter pin to the motor other terminal.At last solder a 100nF ceramic capacitor and a 1N4148 diode among motor terminals to remove noise and back EMF. (Theanode of the diode must be connected to tnegative power supply.)
http://www.instructables.com/files/orig/FKZ/2V6D/GDRPHIQA/FKZ2V6DGDRPHIQA.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FKZ/2V6D/GDRPHIQA/FKZ2V6DGDRPHIQA.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FKZ/2V6D/GDRPHIQA/FKZ2V6DGDRPHIQA.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FKZ/2V6D/GDRPHIQA/FKZ2V6DGDRPHIQA.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FUF/XFGF/GDRPHIQB/FUFXFGFGDRPHIQB.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FUF/XFGF/GDRPHIQB/FUFXFGFGDRPHIQB.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FUF/XFGF/GDRPHIQB/FUFXFGFGDRPHIQB.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FUF/XFGF/GDRPHIQB/FUFXFGFGDRPHIQB.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/F6K/0QQI/GDRPHIQ7/F6K0QQIGDRPHIQ7.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/F6K/0QQI/GDRPHIQ7/F6K0QQIGDRPHIQ7.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/F6K/0QQI/GDRPHIQ7/F6K0QQIGDRPHIQ7.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/F6K/0QQI/GDRPHIQ7/F6K0QQIGDRPHIQ7.tmp?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FYF/6HVS/GDRPHIQ9/FYF6HVSGDRPHIQ9.pdf?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FYF/6HVS/GDRPHIQ9/FYF6HVSGDRPHIQ9.pdf?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FYF/6HVS/GDRPHIQ9/FYF6HVSGDRPHIQ9.pdf?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/files/orig/FYF/6HVS/GDRPHIQ9/FYF6HVSGDRPHIQ9.pdf?utm_source=pdf&utm_campaign=fileshttp://www.instructables.com/id/Mostly-easy-PCB-manufacture/


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Step 7:LEDs DiskCut to circles from the foil to cover the plastic disk. The foils must not have an electrical contact so I made large hole around screws on one ofthe circles.Place a wire into center hole of one disk and cover it with a foil circle, place the other plastic disk on them put some glue on the disk and cover it with other foil circle.Then screw the disks together, the screws must be too loose to be able to place one leg of LEDs among the disks easilyand too tight to LEDs be able to get stuck to tdisk.At lastuse glue tofasten loosenuts.


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Step 8:Attaching Circuit and BatteryAttach the circuit to the other side of plastic strips with a screw and nuts.Place the battery between motor and circuit and fasten it with tape if required.


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Step 9:Final AssemblyAttach the plastic disks to the motor, note that the wire coming from the center of disks must be connected to the motor shaft.Solder a 1N4007 diode kathode pin to the negative power supply and solder its anode to a wire that is intouch with the outer foil circle.Roll the bubble bag around motor, battery and circuit to avoid impacts.


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Step 10:SafetyThe strewn LEDs may strike to your eyes, so put on safety glasses.The thrown machine may strike to you head or breakable objects, so be careful where you throw the machine.

Step 11:Fire!Adjust the potentiometer to start the motor on the air; it depends on how far you throw the machine.Put the positive leg of LEDs among plastic disks in contact with inner foil circle and put the negative leg in contact with outer foil circle.

Press the push button and threw the machine to the air.
http://www.instructables.com/id/LED-Fireworks/step11/Fire/


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Comments

13 comments Add Comment

sibuadvancetech says: Oct 30, 2010. 8:30 PM REPcool stuff!! thank you!!

Shanjaq says: Oct 12, 2010. 2:01 AM REPMaybe encase the cap/led/resistor modules in hot-glue to make them more durable and less of a danger to eyeballs =D

jtmjr says: Sep 27, 2010. 7:41 PM REPi could have used this under my tablesI really like the looks of this wish i had seen it before our reception you got my vote :)keep me in mind when voting i built the 3 tier fruit wedding cake

cowscankill says: Sep 9, 2010. 5:32 PM REPVery cool! Would look like fireworks in the dark. One question: what is that song in the video? :D

br_amar says: Sep 25, 2010. 7:28 AM REPThat song is from a bollywood movie called "DHOOM"

Here is the song:

http://www.youtube.com/watch?v=9uIz1DFNJnY

vahid_you2004 says: Sep 10, 2010. 4:26 AM REPThank you.I don't know; i found this song in a rigntone pack; the file name is Dhoom.mp3

agis68 says: Sep 19, 2010. 4:31 AM REPVery nice job and well presented. The white disks are handmade right? from what material? (I know are made from plastic) but i mean what plastic???please give me a response maybe you find me a solution in a big problem with my old scanner!!! You will be my hero you know!

vahid_you2004 says: Sep 20, 2010. 4:33 AM REPI don't khow, the plastic disks was parts of a toy wheel, and the white disk is a thin layer of foil attached with glue to the disk.

WeaponMaker96 says: Sep 11, 2010. 6:32 PM REP

Sorry, wrong contest ;D

sc7923a says: Sep 13, 2010. 6:00 AM REPI assume you're referring to your post in the wedding DIY contest, and I disagree! I've always wanted fireworks at my wedding but they didn't fit in thebudget - now they do! :)

agis68 says: Sep 19, 2010. 4:24 AM REPI Had fireworks and accidentaly burned my best man 's hair!!!!!!!!
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vahid_you2004 says: Sep 20, 2010. 4:30 AM REPBy this machine you have fireworks but you won't burn anyone!

Electronics Blurred says: Sep 9, 2010. 11:40 AM REPIt's beautiful , thanks .But i would have used a copper wrapping around the led's ,or you could flip the led's to north direction and lay diffrent poles of copper wrapping , the copper is attached the output and input ;)I didn't say you should have , i only said that i would .Peace .
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