LED help for halloween costume

Can anyone help me with this. I am wiring LED's to my halloween costume and I think I need a larger power source. I currently have 8 superbright white LED's wired in series to a 9V battery. Each LED is rated 60 mA and I need each to receive 3V. I am currently using a 100ohm resister with this. This size resistor is the smallest that I had so although I don't need that much resistance, that is all I had available. Can anyone give me any advice on this setup and on how I could make it better. The lights don't seem as bright as they should be so I am thinking that I can improve on this circuit.

Topic by graft21   |  last reply


Arduino "Blinking LED Eyes" for Halloween

I want to make a set of 8 LED "creature eyes", that blink as a two LED set, but randomly.  Like night creatures on Halloween. I've got the Arduino Uno, bread board, wire, LED's, but just lack the programming and circuitry skill. Can you help?

Topic by phatguppy 


I want to make a R2D2 for Halloween

I've decided i want to make a R2D2 for Halloween. I'm pretty sure i can make most of it from scrape metal but i don't know where i can find something that's like the head on R2D2. I need a metal sphere that i can cut in half, any ideas?

Question by    |  last reply


Arduino Christmas/Halloween Lights with Vixen

Hi, I need a piece of code that I can use to controll my christmas/Halloween lights this year.   I would like the code to work with Vixen so I can sync the music to the lights.  The controller that I have is normally open so if you have code you may have to tweak it so I can use the relays as N/C, lastly there are 6 channels.  No fading.  Any help is appreciated.  Thank you!

Topic by iApple guy   |  last reply


Help with basic arduino sketch for Halloween

Hello all, I'm very new to Arduino programming, and was trying to write a basic sketch to flash some LEDs in a jack o lantern for halloween, but I'm struggling with the code. Essentially what I wanted to accomplish was blinking a LED from pin 13 x times, followed by fading (pulsing) another LED from pin 9 x times and then repeat.   If anyone would be so kind as to help me accomplish this, I would be very grateful. Thanks in advance.

Topic by SubEclipse   |  last reply


I need A little help. I need a circuit that will flash 3 LEDs Something like a stop light.

I need A little help. I need a circuit that will flash 3 LEDs Something like a stop light It is for a Halloween prop I am using a sirvo motor to move a head From Left to Front to Right And need a circuit that will ramdumly flash 3 LEDs Thanks For any help??

Question by SALFXS   |  last reply


The Pixlr Halloweeks Photo Challenge: Because Halloween Deserves a Whole Month

The Instructables community loves Halloween. Big time. My hope is that you'll like this photo contest.... I was looking to create a contest for Halloween for the community of people who use Pixlr apps, and I thought why limit a contest celebrating Halloween to the week of Halloween. Why not turn the whole month of October into one big Halloween fest? Heck, they do it with Christmas so why not Halloween? We’ll be giving away a new prize every week in October, culminating in our grand prize of a Sony QX10 lens — plus 3 special creativity prizes to put your artwork on beautiful, big canvases courtesy of CanvasPop. All you have to do is share a photo that screams out Halloween on Twitter, Flickr, Instagram, Facebook, or Tumblr with the hashtag #halloweeks. You can follow our weekly prompts or just share anything you think embodies the spirit of Halloween — a haunted-looking house, a creatively carved pumpkin, a particularly awesome zombie costume from last year. Anything and everything “Halloween” will be considered for a prize. Interested? Visit halloweeks.com to see the current entries and find out more. Hit us up on Twitter for special recognition or encouragement. We’re dying to see what you create!

Topic by supereric   |  last reply


Want to make singing lighted pumpkins for Halloween?

I have looked at pre-fab LOR and really can't afford it at my home haunt for this one project.  Any plain language schematics to create this for a newbie.  I want to do "This is Halloween" and was hoping someone out there could help out with some simple suggestions to make it work without spending a fortune.  Help!  Any links to specifics or

Question by edunn1   |  last reply


Image issue with my Halloween contest slideshow.

I have an issue with my slideshow.  The images aren't showing and there is a big chunk of white space at the top: https://www.instructables.com/id/Battle-on-the-High-Seas/ How do I fix it?  Thanks!?

Question by ThawedHead   |  last reply


adding remote button to halloween screamer device

Hello! I am pretty new to all this. In fact, this is my first project. down to the dirty part. I have a battery powered screamer toy. It has a light sensor with a toggle switch and a push button that both activate the speaker.  I want to add an external button in place of the internal one located on the circuit board.  I have added a length of wire to the board already.  One end to the contact push button on the board, and the other to the point that connected to the other end of the contact push button. I scraped the copper off between the point where the second wire connected to the contact push button so now the only way they connect is through the added wire and tactile button.  My problem is this.... none of it works now. Not even the light sensor.  Please help!

Topic by Madonk   |  last reply


For my Halloween costume, I want to add some fake "smoke" to come out of my shirt or hat. Just a puff or two on demand.

For my Halloween costume, I want to add some fake or artificial "smoke" to come out of my shirt or hat.  Just a puff or two on demand is what I am looking for.  Could be battery or chemical powered, but still needs to be safe next to a person. Thanks!?

Question by    |  last reply


Help to add more LEDs to a Halloween LED Pumpkin Lamp.?

I have an LED Halloween pumpkin lamp that runs off of 3 AAA batteries.  The lamp has 3 LEDs each color is red, green, and blue.  It slowly changes from one color to the next.  I wanted to see how I could add one more of each color LED for a project.  I know there will not be enough room on the same board and they will need to be put on separate component PC board.  I will have no problem doing any kind of soldering.  I just don't know anything about resistors and electricity.  I am looking to find out how everything needs to be connected up and if I need more power.  If I need more power then I will add a DC jack for any power adjustment.  Is this easy or would it be a lot easier if I used a timer chip?  I just don't have anything to program chips.  Thanks for everyone's help.

Question by mukieluk   |  last reply


Super Mario Bros. LED Mushroom Halloween Pumpkin!

How to create your own Super Mario Brothers 1-up LED powered Pumpkin! A greatchange from your standard, boring Jack-o-Lantern.http://hacknmod.com/displayMOD.php?hack=561

Topic by Joe426 


What's the easiest way to setup a remote controlled laser wall?

I'm interesting in building a simple green laser grid for the entrance to an upcoming Halloween party. I considered buying 8-10 green laser pointers and setting them up to some sort of relay switch, but I have no experience with the tools or specifications to do this. Where should I start? Or is there an easier way?

Question by resslx   |  last reply


Making Michael myers prop have a few questions

I'm building a michael myers prop out of a bust on a pole type of maniquin and I want to make him sound or motion activated I'm planning on getting a radio shack recording module to record the Halloween song but my questions are how can I make it sound activated or motion activated? what else do I need to make this happen? I also want to extend the speaker cord to put the speaker in his chest how can I do that? and I need a new speaker because the one the recording module brings is pretty bad any good speakers you recommend for an animatronic?

Topic by Halloweenpropmaker   |  last reply


What would be best to carry light emmited from a gauntlet to the back of my skull (Bane Costume)? Answered

I already have dissasembled a old Light-saber for the Light, I was thinking rubber-tubing but that failed, does anyone have brilliance where i am drawing a blank?

Question by    |  last reply


Casting Resin issue?

I'm trying to cast some resin claws for a halloween/convention costume I'm trying to make ( it isn't a Wolverine one .. more a VERY twisted, evil, and blood thirsty Mad Hatter character ) and running into a bit of trouble. I'm following the 5 drops of hardener per 1 oz of resin that is stated on the resin can's instructions. It also says it's supposed to set hard enough to support objects at 40 minutes. I mixed a 2oz batch of resin ( 10 drops of hardener ) and poured it into a rubber latex lined plaster mold that I had sprayed with mold release. I put a bolt down partly into the resin so I can later attach a wire to it and left it alone for about an hour to an hour and a half. I came back to check on it and the bolt was still able to be moved/removed with NO resistance. I figured the mix was bad and threw it out, but noticed it was the consistancy of slime. Did I mess it up and not wait long enough, or did I not add enough hardener or what ? Any suggestions would be great!

Question by Myrr   |  last reply


Bioshock Big Daddy costume Answered

For Halloween, I've been asked to go as a Big Daddy from Bioshock to a party. Going over the top as I normally do for such things, I'd planed on not only making the drill rotate on the arm, but also the eyes light up. While I've wired motors before, I've never done the same with LED's, which lead to some interesting electrical problems. In total, I'd planned on having all 8 eyes wired up with two different sets of LED's, 4 red and 4 yellow per eye. The idea was to have a pack on my waist set up with the power supply and controls. The power supply was going to be 6 9-volt batteries all wired in series (providing 54 volts of power) connected to a push switch. The push switch would be the on/off switch, with the lead going to a toggle switch. The lead would connect to the middle input, the top would lead to the red LED's, and the bottom would lead to the yellow LED's. The LED's were going to be wired in series as well inside their housing, which was going to be cross sections of multiple Sobe bottles with holes drilled through it for the wires to go through. The eyes were all going to be run in series, with resisters at the end of the series before connecting to the power supply again. 1) does the plastic bottle pose any risk of short circuiting the LED's? Electrical tape can always be applied but the question of if it would be a good idea came up. 2) With 54 volts being generated from those 6 nine-volt batteries, what precautions would be recommended to make sure I don't get 50 mA through the heart if something does go wrong? 3) If possible, can anyone suggest a more efficient way of wiring or working the circuit?

Question by Nanomd   |  last reply


I've built a few disposable camera strobes, and want to use them in solar garden lights, instead of LEDs. Answered

 My problem is getting them to switch ON after dark.  The strobes draw about a half an amp, when the first start to charge.  A single AA rechargeable battery should last a few hours, but no idea on how do the switching with only 1.2 volts.  Any help or suggestions?  Was hoping to get a half dozen put together before Halloween, sort of a lightning-effect.?

Question by HarveyH44   |  last reply


Making a Michael myers prop have a few questions?

I'm building a michael myers prop out of a bust on a pole type of maniquin and I want to make him sound or motion activated I'm planning on getting a radio shack recording module to record the Halloween song but my questions are how can I make it sound activated or motion activated? what else do I need to make this happen? I also want to extend the speaker cord to put the speaker in his chest how can I do that? and I need a new speaker because the one the recording module brings is pretty bad any good speakers you recommend for an animatronic? 

Question by Halloweenpropmaker   |  last reply


how to make an Ultrasonic Water Fogger for those creepy witch's cauldron effect?

Also known as ultrasonic fogging devices, these consist of metallic plates which vibrates with ultrasonic frequency to nebulize the water molecules to form a vapour which appears as thick low lying fog. For the effect they are simply placed below a water body. Please provide complete details. www.mainlandmart.com/foggers.html

Question by adilqaiser   |  last reply


How can i combine these two instructables for halloween prop?

I am making a haunted house, and want my pneumatic props to be triggered once the laser beam is broken. I have followed the instuctable for a laser tripwire  https://www.instructables.com/id/Another-Arduino-Laser-Tripwire/ and the instructable for a 110v controller  https://www.instructables.com/id/Yet-Another-Arduino-110v-Power-Controller/ both work great seperately, however what i would like to do is have 4 lasers, and each one controls one of the 4 outlets. can anyone help me in code and schematic? i would greatly appreciate it. Sam

Question by Zukibeast   |  last reply



Arduino Uno to switch between strands of LED Christmas lights and trigger foggers for Halloween Project?

Greetings, I'm new to arduino / electronics and I'm looking to see if what I'm wanting to do is feasible. We have a haunted house that we're building and we are in need of some "cannons" for our life size pirate ship. we have 4 cannons each connected to it's own fogger which will be blowing "smoke" out of the tube its connected to. We have 4 strands of christmas lights (one for each cannon) that we're going to drill holes into the tube and put the LED lights into so when the cannon goes off it will turn on the lights and make it look like the cannon was fired. My plan is to: Use and arduino to trigger the manual fogger button on the remote control  when this button is "pressed" it the arduino will also send a signal to turn on the lights hidden inside the "cannon". After being able to do that I'd like to expand of this and have the arduino pick a random cannon to do this process to. I have found some examples of triggering the fogger from here:  http://www.horrorseek.com/home/halloween/wolfstone/Controllers/cbffog_ControllingFogger.html#RelaySelection but now I need to figure out how to control the 4 strands of LEDs. Is this doable?  Would relays work for this?

Question by abstrakone 


Any advice on testing/powering a CRT from a TV?

I recently salvaged a three color Cathode Ray Tube unit from a big screen TV  (unknown damage) and I've  never worked with them before. I don't know if there is a best way to test them out or what if any special gadgets I might need to do so. My goal is to re-purpose the unit as lighting for my Halloween display. I'm just interested if they can produce light and if I can control the brightness of the light.

Question by JaneSays   |  last reply


Try me Button

I got a few of those Try Me buttons off some Halloween things I bought, are they a complete waste or is there something you can do with them?

Topic by thatjawn   |  last reply


Looking to build a led flicker circuit?

Hi, my cousin asked me to help him finish a project. He has made 8 pumpkins for a halloween decoration, And wants to have the lights and mouth light up. So I figured about 5 led's per pumpkin (maybe 3). And I have rgb ones on hand already so I figured I could use those to make orange flickering lights with. So I need to know how to wire it up and what I need to make it work. And how to power it.  Any help is appreciated! :D  Thaaaanks.

Question by 'earl   |  last reply


sound effects modules

Hello!! I am planning several Halloween props that will benefit bigly from sound effects. For instance...I'm working on a mantel version of the demonic grandfather clock in Disney's Haunted Mansion. It would be awesome to have the sound of the ominous ticking, backed with a chime, that the "real" clock has. This could be an audio loop of just a few seconds. Some of the other parts of my scheme would be enhanced with short loops of sound effects or mood music...a minute or two at most. I don't have a background in electronics, but I can follow directions. Any advice on constructing a few, small sound effects modules? Thanks!!

Topic by Purple Chez   |  last reply


How can I make a good steampunk mask?

I want one to make one for halloween so i can show off my creativeness

Question by nerd7473   |  last reply


Suggestions for my Instructable?

Does anyone have any suggestions to make a better Instructable out of this?: https://www.instructables.com/id/Doll-Face-Halloween-Photoshop-Tutorial/ Thank you for your constructive criticism! :)

Topic by deliciouslydevious 


Inspector gadget heli-hat

Hey all, So this year I am going as Inspector Gadget for Halloween and wanted to do my best to have a couple functioning gizmos. The piece I'm focusing on for now is the trademark helicopter that comes out of his hat. I just want the blades to move. Preferably it would be something with an on/off switch (I'm thinking a toggle with strings or something that lead down the handles). Unfortunately I have little small motor experience and I don't know where to start. I know this wouldn't be a very difficult thing for a seasoned person, so I was hoping to get a little direction. Thanks a bunch!

Topic by TheUnholyTaco   |  last reply


chasing led light circuit

 I would like to make a set of chasing LED's, something small and portable. My son wants to be a ghostbuster for halloween and I would like to put chasing LED's on the proton pack.

Topic by youaintwrong   |  last reply


Touch Sensitive Floor Mats

I have one of those Halloween floor mats that when you step on them, it triggers a sensor that has it make a screaming noise. Is there anyway to hack this? It's annoying and I want to make use out of it.

Topic by thatjawn   |  last reply


What would this circuit act like?

I am building this cirucithttp://www.discovercircuits.com/DJ-Circuits/3vledfs1.htmIt flashes an led once every 2 seconds, if I am reading correctly.I need to modify it so that it acts like in this vid below.Any Ideas?I am making many of them so that I can scatter them all around our house on halloween to make it have a sort of twinkle effect. (the leds are going to be connected at different times so they blink at different times)

Question by madman11   |  last reply


*Insert Cuss Word*!

My 360 just Red Ringed for the second time! Right before the four day break too! Right when all the good games have come out! CURSE YOU 360 REAPER! (Ironic that this is what I went as to a Halloween party.)

Topic by Spl1nt3rC3ll   |  last reply


What is the most fun, entertaining, and maybe most useful application for the iPod Touch/iPhone?

Please tell me, as I am going to download some new apps. Try and keep the under £2 please.

Question by Perkinator   |  last reply


How do i rig a simple mic to a speaker.?

This year I'm making my own Halloween costume and the head piece I'm making will not have a good voice projection through the mask. I just want to put a mic on the inside and incorporate a small speaker on the outside.?

Question by numunk   |  last reply


Is my LED gas mask idea possible with the 'Getting Started with Arduino Kit'?

I'm making a gas mask for my Resident Evil Umbrella Soldier Costume for Halloween but stuck at the LED part. I have the 'Getting Started with Arduino Kit' (seen here: http://www.makershed.com/products/getting-started-with-arduino-kit-v3-0?gclid=CjwKEAjw456hBRDQ4eqg8MzA2W0SJABI2gJ8cIMUx4P7s-7_auRaly1jAeWzXCQwuYyWBtimS1twpBoCwXfw_wcB) which you can see the contents on the link but I'll post it here: (1) Arduino UNO (1) USB Cable (1) 9V Battery Pack w/DC Plug (requires soldering) (1) Clear Breadboard (1) Deluxe Jumper Wires (2) Red LEDs (2) Green LEDs (2) Blue LEDs (1) RGB LED (10) 10K Ohm Resistors (10) 220 Ohm Resistors (10) 270 Ohm Resistors (2) Photo Resistors (2) Momentary Button The mask in question is in the image posted below. That's what I have done so far. I want to have the 8 white LEDs fade out while the other 8 red LEDs fade on and vice versa when I turn the mask on. The timer would be a count of normal breathe basically and just continue as such. I'm new to LEDs and all of this in general so I was wondering if it's even possible to make with what I have in the kit. If not, what else would I need? Any suggestions for tutorials I can look it on how to accomplish this? Thanks.

Question by Doitourselves   |  last reply


simple machine to provide/create movement?

Want to use/alter or create a machine which will produce simple repetitive movement (for instance, to power the arm of a dummy (to shake it) or to move a dummy's head back -n- forth) for halloween.? help will be much appreciated! have no idea how to go about this & not a lot of skill (but probably have the necessary equipment)

Question by kbaleigh   |  last reply


Hallowe'en Avatar Challenge

There's a three-month Pro membership up for grabs for the best hack of my usual avatar to be used over the Hallowe'en period. Do it by hand, create a physical version and upload a photo, stick to digital jiggery-pokery, be subtle, be extravagant, whatever you like. If the techniques you use could be used by others, then you could make an Instructable of it as well.

Topic by Kiteman   |  last reply


Does anyone know if there is a UV-type (blacklight) EL wire available? Answered

If so, where can I get it? If not, what option currently available produces the strongest "blacklight" effect on neon or UV reactive materials? (Glow in the dark type stuff)  I want to outline the brim of a cavalier hat with an EL wire that will make blacklight reactive make-up glow for Halloween. Any help is appreciated.

Question by SMBonante   |  last reply


I need help coding an arduino sketch to activate audio from an mp3 board when my PIR senses motion

My goal is to have a sound effect play when a person first walks into the field of view of my PIR. So far I can get it to work, but the sound "stutters" for about 4 seconds before it will play through all the way. The parts that I am using are:  https://www.parallax.com/product/555-28027 http://www.mdfly.com/products/microsd-tf-card-mp3-wav-player-module-ttl.html (this board doesn't have a datasheet, so i have been using the 'old version' datasheet: http://mdfly.net/Download/Module/AU5016.pdf ) and an arduino uno besides vcc and ground, my arduino's pins connect pin7 to my mp3 board's number 1 pin (which is active low) and also from my arduino's pin3 to the out/signal from my PIR sensor. I have tried a couple different example sketches and modified them to something that i thought would work, but they both have similar problems with "stuttering". Below are the sketches after modification. (note: I haven't finished changing some of the commenting yet.) I would be very thankful for any and all help. I can admit, I'm not very good at this kind of thing. This project is for halloween in 2016. I'm so bad (and I realize it) that I'm starting a year in advance. FIRST SKETCH: // Uses a PIR sensor to detect movement, buzzes a buzzer // more info here: http://blog.makezine.com/projects/pir-sensor-arduino-alarm/ // email me, John Park, at jp@jpixl.net // based upon: // PIR sensor tester by Limor Fried of Adafruit // tone code by michael@thegrebs.com int MP3Song1Pin = 7;                // choose the pin for the mp3 board int inputPin = 3;               // choose the input pin (for PIR sensor) int pirState = LOW;             // we start, assuming no motion detected int val = 0;                    // variable for reading the pin status void setup() {   pinMode(MP3Song1Pin, OUTPUT);      // declare mp3 board as output   pinMode(inputPin, INPUT);     // declare sensor as input   Serial.begin(9600); } void loop(){   val = digitalRead(inputPin);  // read input value   if (val == HIGH) {            // check if the input is HIGH     digitalWrite(MP3Song1Pin, LOW);  // turn mp3 board on     delay(10);     digitalWrite(MP3Song1Pin, HIGH);  // turn mp3 board         if (pirState == LOW) {       // we have just turned on       Serial.println("Motion detected!");       // We only want to print on the output change, not state       pirState = HIGH;     }   } else {       digitalWrite(MP3Song1Pin, HIGH); // turn mp3 board OFF       if (pirState == HIGH){       // we have just turned off       Serial.println("Motion ended!");       // We only want to print on the output change, not state       pirState = LOW;     }   } } SECOND SKETCH: /* * ////////////////////////////////////////////////// * //making sense of the Parallax PIR sensor's output * ////////////////////////////////////////////////// * * Switches a LED according to the state of the sensors output pin. * Determines the beginning and end of continuous motion sequences. * * @author: Kristian Gohlke / krigoo (_) gmail (_) com / http://krx.at * @date:   3. September 2006 * * kr1 (cleft) 2006 * released under a creative commons "Attribution-NonCommercial-ShareAlike 2.0" license * http://creativecommons.org/licenses/by-nc-sa/2.0/de/ * * * The Parallax PIR Sensor is an easy to use digital infrared motion sensor module. * (http://www.parallax.com/detail.asp?product_id=555-28027) * * The sensor's output pin goes to HIGH if motion is present. * However, even if motion is present it goes to LOW from time to time, * which might give the impression no motion is present. * This program deals with this issue by ignoring LOW-phases shorter than a given time, * assuming continuous motion is present during these phases. *  */ ///////////////////////////// //VARS //the time we give the sensor to calibrate (10-60 secs according to the datasheet) int calibrationTime = 30;        //the time when the sensor outputs a low impulse long unsigned int lowIn;         //the amount of milliseconds the sensor has to be low //before we assume all motion has stopped long unsigned int pause = 5000;  boolean lockLow = true; boolean takeLowTime;  int pirPin = 3;    //the digital pin connected to the PIR sensor's output int ledPin = 7; ///////////////////////////// //SETUP void setup(){   Serial.begin(9600);   pinMode(pirPin, INPUT);   pinMode(ledPin, OUTPUT);   digitalWrite(pirPin, LOW);   //give the sensor some time to calibrate   Serial.print("calibrating sensor ");     for(int i = 0; i < calibrationTime; i++){       Serial.print(".");       delay(1000);       }     Serial.println(" done");     Serial.println("SENSOR ACTIVE");     delay(50);   } //////////////////////////// //LOOP void loop(){      if(digitalRead(pirPin) == HIGH){        digitalWrite(ledPin, LOW);   //the led visualizes the sensors output pin state        delay(50);        digitalWrite(ledPin, HIGH);        if(lockLow){           //makes sure we wait for a transition to LOW before any further output is made:          lockLow = false;                     Serial.println("---");          Serial.print("motion detected at ");          Serial.print(millis()/1000);          Serial.println(" sec");          delay(50);          }                  takeLowTime = true;        }      if(digitalRead(pirPin) == LOW){              digitalWrite(ledPin, HIGH);  //the led visualizes the sensors output pin state        if(takeLowTime){         lowIn = millis();          //save the time of the transition from high to LOW         takeLowTime = false;       //make sure this is only done at the start of a LOW phase         }        //if the sensor is low for more than the given pause,        //we assume that no more motion is going to happen        if(!lockLow && millis() - lowIn > pause){             //makes sure this block of code is only executed again after            //a new motion sequence has been detected            lockLow = true;                                   Serial.print("motion ended at ");      //output            Serial.print((millis() - pause)/1000);            Serial.println(" sec");            delay(50);            }        }   }

Question by Zukibeast 


How do you wire a battery pack to split the voltage to multiple electronic devices?

I am wanting to use a two battery packs (a 9V and 12V) to power a few small electronics for a Halloween costume... From the battery pack, I would like to split the power to run into multiple on/off switch buttons that will control the current to small PC fans, small speakers, and a small 9V amp

Question by    |  last reply


What kind of led to use in cloth?

Would like to know what would be a good size/ type led to use to have all over a garment such as a shirt, or pants, or hat etc., and would like to make them flash randomly (possible halloween/ new years/ party outfits, etc.). I like the look and brightness I've seen in the ones that are in the led strips, but don't know if or how those surface mount led's, such as 3528's, 5050's, etc., can be bought individually (and operated without chips), and if so, how I might go about attaching/ sewing them into, or onto the cloth. I need small but as bright as possible. They would probably need to be able to operate on anywhere from 3 to 12 volts (maybe carry battery/ power pack in pocket?). Do they make some kind of led I just don't know about for this kind of thing? I'm not looking for prefab units that attach to your clothes by just clipping or sticking or pinning. Could also use any ideas on wiring (to include flashing means-maybe 555, or other method?) Thanks for ideas.

Question by stevecinstrfme   |  last reply


How to replace light bulb load in a motion sensor circuit?

I am using a outdoor light replacement motion sensor to trigger a relay which will turn on a fog machine for some Halloween effects. The setup is pretty simple and I am going to enclose the components in a project box so the motion sensor can be hidden near the walkway to my house. My problem is the motion sensor requires the load of a light bulb in the circuit to operate so that the relay can be engaged but I don't want to have a light since this is suppose to be hidden in the dark. My first thoughts were to just replace the bulb with one or more resistors in the circuit but I am not sure if this will be possible or dangerous (in terms of heat). How should I set up the relay circuit to have a load but not have a light bulb? Since my timeline to get this complete is the next couple days for Halloween I need to find options which I can source locally (radio shack, home depot, etc.). Any thoughts?

Question by cbulloch   |  last reply


Miniature Jacob's Ladder

Hi All, I'm already thinking ahead to next year's Halloween and have an idea about a miniature Jacob's Ladder mounted on top of a pumpkin.  Perhaps taking an inoperative vacuum tube, removing the 'guts' and using the remaining glass from the tube as a protective housing over  the actual Jacob's Ladder. Has anyone ever attempted a Jacob's Ladder on a miniature scale?  Wondering if it's even doable.  Open to suggestions. Thanks Folks! Cheers, Ian

Topic by ishane 


question about something important

Perfect me if im wrong but i dont think the following instructables should be in this contest: Super mario bros! LED mushroom halloween pumpkin LED handie LED & Fiber Optic New Years Party - HacknMod.com they entered before the competition started. please say if im right. thank you EDIT: thanks for all of your answers! this is good to know i guess otherwise i wouldnt sleep this night goodnight everyone Dunnos

Topic by dunnos   |  last reply


blinking LEDs

I'm planning a sort of a Halloween Scavenger hunt. I'm planning to hide boxes along a wooded trail, each with a blinking red LED on top, which is what seekers would look for. I suppose that this is a super-simple question, but I've got no real experience in electronics. But I do work well with instructions. I would like to do about ten of these, so I would appreciate any advice on how to cheaply create a bunch of blinking LED beacons. THANKS!!!!

Topic by Purple Chez   |  last reply


troubleshooting voice modulator

About four years ago I bought this robot voice kit for a halloween costume: http://www.kemo-electronic.de/en/Hobby-School/B107-Robot-voice.php (the scematics are near the bottom of the data sheet) I never finished it and now that I put it together it's not working. The signal goes through to the amplifier, but without the modulating happening. Does anyone know what the problem could be, or if there is a way to narrow it down without desoldering and testing the components individually? Thanks

Topic by Jur   |  last reply


Food safe pump

Hi everyone! I'm working on a halloween costume where I want to have a container of liquid on my back, a hose from said container running down my left arm and a way todispense the liquid through the hose. Right now the dispensing is the problem. Would a windshield washer pump be reasonably safe to use for something that is going to be consumed? I'd buy a new unused one of course. If that's not a good idea, what would be? I've experimented with a can of compressed air to push the drink out but was not fully satisfied with the result.

Topic by Jur   |  last reply