timed detonator

Ok, I LOVE airsoft, as many do. I wanted to make a time bomb detonator for different missions, where we could set the time and your squad would have to get there and disarm it. All it would do if we didn't make it in time is set off a smoke bomb. That way everyone would know the game was over. but I do not know where to get a battery powered alarm clock. (the dollar store doesn't sell them) does anyone know where to get one?

Posted by Jordo 10 years ago  |  last reply 10 years ago


WHAT TIME IS IT? NEW BOAT TIME!!

Yup working on another outrigger and was just thinking "gosh, wonder how people preffer their outriggers, open or closed deck?" so throw down you're coolest outrigger ideas and storys, crazy or otherwise, i might even include them in my new instructable (i probably will). but dont forget to respond on the actual question closed/open hull and why

Posted by Jumpin Jehosaphat 8 years ago  |  last reply 8 years ago


Fireworks time delay?

I want to set off a few fireworks on the night of my wedding aniversary, and rather than run off and light the fuse, or rely on my dopey brother, I was after a time delay with, say, a watch? So I could set it for 10pm and bamoo.. 10pm we outside enjoying drinks, and a few fireworks go up! I have seen somewhere a guy light a match with a cheap electronic watch using a strand from a ball of steel wool, but I forget exactly what he did and where I saw the video now.. If I could copy that I could use the match to light the fireworks! Any ideas like that would be great.

Asked by lochrin 6 years ago  |  last reply 4 years ago


DC time delay? Answered

Here's the situation-I close a switch completing a circuit,providing DC power to a load(6 volt,0.1 A).But I do not need the load to start functioning as soon as the switch is closed i.e,only after a delay of say..30 seconds.I googled for "Time delay circuits" but the ones I got were either dealing with AC or the transistor -capacitor(Time Constant) based circuits that makes a load function for a preset time after the circuit switch is opened.I think I could achieve this "pre-delay"  with elements such as transistors,resistors,capacitors etc. but I can't figure out how.Please suggest possible circuits that can be used to achieve my purpose.

Asked by Adarsh_tronix 5 years ago  |  last reply 5 years ago


Capacitors depletion time?

Building a cap with 2x 500F what would the run time be running on LEDs?

Asked by dominick.j.pezza 3 years ago  |  last reply 3 years ago


Grammar nazi time

I wasn't sure if this would be considered a bug or feedback. "This author has not updated their profile." "Author" is singular, "their" is plural. It should be something like "This author has not updated his/her profile." The devs could probably make that match the account's gender.

Posted by FuyuKitsune 7 years ago  |  last reply 7 years ago


Time lock box? Answered

Hey I've seen the movie city of ember and there you have a box that locks itself from the inside, only to open again once the preset time has expired. I'd love to make one for a friend of mine (and for me as well), who's always distracted during the examination, so he could lock his distractions away for the time needed. I browsed hours to find timers and count down circuits. the best things that I could find, never were longer than e few hours or a day. but for this project it should at least last a month. I got a weird Idea of hooking up egg timers in series, so if the first one ends, the next one starts, until your last one finished that opens the box (the more I think about it, the more it's sounding impossible to do) the next best thing that would simplify the build was an arduino, but since these are essentially tiny computers I think it would be a wast to just let them count down. (and doesn't a arduino consume a lot of power too?) and I would like to only use an arduino as last resort... you can make robots out of these little board, it would be too tempting to pull it out of my project and try to make something cool with it. would any of these idea's work descent? does anyone know what could be the best way to pull this off? thanks

Asked by Jakwiebus 6 years ago  |  last reply 3 years ago


Loop Time Ardunio

I need your help with a very very short code ?i have this code#include "Keyboard.h"#include "HID.h"void setup() { Keyboard.begin(); }void loop() {delay (1000); Keyboard.write(KEY_F1);delay (3000); Keyboard.write(KEY_F2);}this code works fine for me... but the problem isthis code give me only one "F1" and one "F2" in 4 seconds. i need "F1" appears every second (1000ms) and "F2" every 3 seconds (3000ms) in a infinyte loop

Posted by AngeloB49 9 months ago  |  last reply 9 months ago


is time travel possible??? Answered

Is time travel possible???

Asked by WEBRANGER 9 years ago  |  last reply 9 years ago


How can i build a time travel machine on the cheap?

Asked by H4k3r4r34l 9 years ago  |  last reply 7 years ago


my time is messed up

So on my computer it says its 8:50am then when i post a comment it says its 5:50 am so does anyone know why?

Posted by Easy Button 11 years ago  |  last reply 11 years ago



What does "half eight" mean? Answered

I was watching one of the Lewis mysteries last night and they kept saying "half eight or half eleven".  Is that half before or half after the hour?

Asked by Re-design 8 years ago  |  last reply 6 months ago


Time difference in comments section

Hello, There is a 10h gap in the comments section under my Instructables. Comments received now, show like 10h back. On the other hand they are Ok in my Discussions menu . See screenshot. Regards Ilian

Posted by FireSword 2 years ago  |  last reply 2 years ago


Diode recovery time question? Answered

Hello, I have a little question about regular diodes. I know that when we connect a high frequency signal to a diode (in series with a resistor), that diode won't fully cut off the current as soon as the voltage becomes negative. (see picture) But what happens if we're not working on high frequencies, but we do create the same negative flank like in the picture? (so just the same as half the cycle of that high frequency signal, but we only do it once?) will the diode still have that same recovery time if the signal goes from positive to negative Very quickly? if that is so, that means that every regular diode fails at blocking a negative voltage pulse? Greetings, Electorials

Asked by DELETED_Electorials 7 years ago  |  last reply 7 years ago


Titanic: Adventure out of time

Titanic: Adventure out of time is the best computer game I have ever played. It was released in 1996 by cyberflix. The main plot begins on the titanic the night the ship hits the icberg. You have a mission with many sub missions, that inclueds finding many items and doing many other things. You mission all boils down to getting 4 items. Depending on what you get and what you dont, you alter the corse of history. The optimum ending stops WW 1 and 2 and the cold war from happening. Its a truley awesome game Anyway, the reason Im posting this forum is I would like to discuss it with other people. If you have this game or have played it, Post a comment and you will be bombarded with questions from me :-)Thanks!Wikipedia link about this game.

Posted by I_am_Canadian 10 years ago  |  last reply 10 years ago


NY Times Innovation Contest

The NY Times is currently having an Innovation Contest in which they are asking people to share some of their personal innovations. The winners are going to have their project featured in a special issue of the NY Times. I suspect there may be some people around here with innovations to share.

Posted by randofo 6 years ago  |  last reply 6 years ago


Timing system for 2 actuators

Hello all! I have 2x 12v actuators with 2 wires. I need to have both of them (at the same time) extend all the way and stay for 30 minutes and then retract completely for 30 minutes and cycle like this. What would be the simplest way for me to go about this? Cheers!

Posted by sandman420 8 years ago  |  last reply 8 years ago


How do you kill time?

What do you do when you've got time to kill?

Posted by MattGyver92 9 years ago  |  last reply 9 years ago



What is your favorite adventure time epesode.

What is your favorite adventure time episode.

Posted by Fin the human 3 years ago  |  last reply 3 years ago


why when I post comment the time it says I posted it is 3 hours earlier then the current time...any answers?

 Is www.instructables.com located indifferent time zone besides eastern?

Asked by Apple_4_life 8 years ago  |  last reply 8 years ago


time travel

I heard on the radio today that TIME TRAVEL was possible. Itll only set you back 10 trillon $. You can only go forward in time but then you can go back if they make one that can go back in time in the future. (like mysterio) ooooooo-weeeeee-oooooooo edit:better grammer and puncuation and cool sound effect.

Posted by ich bin ein pyro 11 years ago  |  last reply 8 years ago


I spend to much time in the topics.

Apparenty, so do you. I really need to get back to looking at the actual Instructables, instead of constenty looking at topics. Time to spin the bottle.

Posted by Spl1nt3rC3ll 11 years ago  |  last reply 11 years ago


Time Fountain

Wouldn't be cool if someone made one of these for the LED competition? I definitely do not have the LED knowledge to do this.

Posted by Spl1nt3rC3ll 10 years ago  |  last reply 7 years ago


time /magic fountain

Could anyone help me with that time /magic fountain https://www.instructables.com/id/The-Time-Fountain-Also-know-as-Magic-Fountain/ What do i have to do with this information "The transistor (2N1711) can handle a maximum current of 500 mA"? could you also tell me wich potentiometer i should use and how i have to control the leds with them?

Posted by itge13 6 years ago  |  last reply 6 years ago


Time stamps going nuts

Just noticed that instead of the usual hours I now see a lot of time stamps in minutes. Looks a bit weird to see "Last posting -285 minutes ago". I don't mind a challenge every now and then but is it a feature or a bug that we get minutes instead of hours now?

Posted by Downunder35m 4 years ago  |  last reply 4 years ago


New Years 08: How We Could Theoretically "Discover" Time Travel/ers

Well that forum on time travel got me thinking...How We Could "Discover" Time TravelWrite down, carve on stone, burn into our memory, tatoo on my back, or something, that if/when time travel comes into exsistence, someone needs to travel back in time to a specific time and date in our near future (Instructables Control Tower, New Years 2008 would be a good time/place). If everyone were to record this, eventually someone/s might do so, meaning that a time traveler might turn up at Instructables HQ on New Year's. I personally intend to attempt to do so, or at least get my future kids to:)Anyways, if a good number of people do exactly this, there might be quite a congregation at Instructables on New Year's. Or of course, no one might turn up at all...

Posted by KentsOkay 11 years ago  |  last reply 8 years ago


Frustrated...

I just can't seen to get a project started and completed in time anymore....and now I have missed another deadline...

Posted by Goodhart 10 years ago  |  last reply 9 years ago


time bomb

Guys i got an idea but dont have the resources. i was wondering if we could join a nichrome wire to the wires that connect to the speaker of an alarm clock ,dat way we could fix the time when we want the wire too burn and thus putting a simple cracker near the contraption would give us a timebomb.any one interested in collaborating in such an instructable pleasecontact me. thank you

Posted by blckthng 11 years ago  |  last reply 9 years ago


Arduino UNO Code Problem

I want to get arduino code to sync computer time... Please Help Me...

Posted by Tech Works 3 years ago  |  last reply 2 years ago


Button pressed

Hello guys this is a weird question but do you know a way that i can calculate the time while i press a button on my keyboard

Posted by OmarB8 3 years ago  |  last reply 2 years ago



"Oh, you must have too much time on your hands"

After showing off something that I've worked on or made there will be someone, usually anonymous on the internet, who will say, "This guy clearly has too much time on his hands."Yet these same people will gladly spend hours on blogs or on digg making comments. If there was ever a worthless way to throw away your voice online, commenting on digg is one of the best. Or maybe youtube. There's no point to that for anyone.For me it's a matter of priorities. I don't watch TV and only occasionally watch movies. I think that for many people it's possible to get free time. The hard part is deciding which way to use it. People are clearly willing to spend it on distractions. It was recently announced that the average WoW player spends 17 hours a week online. And according to the A.C. Nielsen Co. the average TV viewer watches 28 hours a week. That's a lot of building time.So when someone says that I have a lot of time on my hands I can just laugh and know that I'm putting my time where I want to. It helps that I don't have kids, I know, but there are many others in the same situation as myself who work hard on keeping up on their cultural knowledge and that's about it.Time to make something new.

Posted by fungus amungus 11 years ago  |  last reply 11 years ago


Evidence of Time Travel!

I'm not sure how I managed it, possibly it's a result of running the washing machine, tumble dryer and my coffee machine simultaneously, but I appear to be posting from seven and a quarter hours in the future. Check out the image below for proof... Or maybe it was csharyk's fault?  He's interested in woowoo tech, maybe he pulled me in after something he did elsewhere / elsewhen? Update: it's spreading!  (second image) (I think I'll move this thread to Bugs) (If it's important, I made that screenshot at about 10:13am, UK time)

Posted by Kiteman 7 years ago  |  last reply 6 years ago


Simple time switch "Help"

I live in a narrow road with high walls each side.   Getting my car out of the gateway is therefore a problem because I have to stick the bonnet out into the road before I can see that it is clear.  So I bought a 12 volt LED flashing beacon to put on the top of the wall at my gate.   Now I need a device which will run the beacon for about 20/30 seconds after I push a button, giving me time to get into my car and edge out.  I could, of course, stop and block the road while I go back and turn the beacon off but a time switch would be a help to good relations with other drivers.   Can anyone please tell me of a suitable switch or circuit?   John C

Posted by jwcanning 6 years ago  |  last reply 6 years ago


when are luffa sponges ready to harvest?

Null

Asked by 9 years ago  |  last reply 9 years ago


How to choose 1 out of 14 or so images for 4000 burst shots? Answered

Oops- tried to take a time lapse but the shutter was set on burst (40fps), so every time it took a picture it took about 14 pics in bursts.... The camera took around 3000 or so shots on this burst setting, how can I take out a picture every 14 pics or the shots automatically? Is there any  "picker" software, mac or pc, that will take 1 out of 14 images repeatedly automatically???? thanks for helping me fix my dumb mistakes- again ;-) -A907

Asked by astroboy907 7 years ago  |  last reply 7 years ago


Are my draft instructables kept indefinitely?

Are my draft instructables kept indefinitely? Just wanted to make sure it wouldn't get deleted or anything...

Posted by Mr_o_uk 5 years ago  |  last reply 5 years ago



long-term, vacation dog-sitting: her place or mine?

When puppy-sitting for a family member's dog, does it matter whether I go to her home or she comes to mine? the one year-old dog knows me well (we are good friends), and has been to my house a few times -- but it is two states away from hers, and she has only previously visited with her owner? her owner will be gone for one week

Asked by 9 years ago  |  last reply 9 years ago


How Long does it take to see your posted video?

I've just created an account and submitted a video. How long before I can search and find it? I have put in my keywords but my video is not coming up. Thanks.

Posted by peasofmind 10 years ago


Remote Lockbox

I would like to build a small lockbox to which I could remotely provide access.  For example, I leave the box at a property.  At a later date, an employee is in the area and we would like him to access the property without having to make a trip back to the home office to pickup the keys.  We provide him a one-time access code and he retrieves the key. I recently discovered how much fun Raspberry Pi DIY projects are and this seems like an ideal candidate for my next challenge but I have to confess I am still a total neophyte to all this with no real notion as to the best way to move forward.  I would welcome any suggestions or ideas.  I also realize my definition of the problem might be more vague than is ideal but given my lack of confidence vis-a-vis which details are relevant, I thought it would be more productive for me to answer questions rather than post a giant wall of useless information - which is my long-winded way of saying, please do not hesitate to ask me any questions if they'll help get me pointed in the right direction.

Posted by Jason357 1 year ago  |  last reply 1 year ago


Summertime!

For most of us summer is almost here (Hah, not here. It's still rainy and cloudy....) and some of us are probably not going to be here at some point or another. So I thought that instead of people posting a whole bunch of forum topics people could just post here, that way people wouldn't have to look every where to see if someone was just on vacation instead of locked in a cupboard in someones basement. Anyway, I wont be here July 16-19 because I'm going to camp. Then sometime after that I'm going to Lake Chelan. I might be able to get one once or twice there though. Then August 10-16 I'll be at a different camp and then I'm going to Sunbanks sometime after that.

Posted by Sunbanks 10 years ago  |  last reply 10 years ago


Inductance and resistance question help

Hi folks I'm new to this I was wondering if someone can help me with these questions I've answered them but I would like one of you expert folks to tell me if they are correct or where I'm going wrong Or if I have the correct formulas its just a question for an exam revision which I have soon. A coil of inductance 4H and resistance of 80Ω is connected in parallel with a 200Ω of resistor of negligible inductance across a 200v dc supply. The switch connecting these to the supply is then opened; the coil and resistor remain connected together. State in each case one for immediately before and one for immediately after opening the switch; The current Through the resistor Switch closed 200v/200Ω =1a Switch open 200v/80Ω =2.5a The current through the coil Switch Closed 200v/80Ω = 2.5a Switch open 200v/(200ohm +80Ω) = 0.714a The e.m.f induced in the coil Switch closed (2.5a*80Ω)/200v = 0v Switch Open 2.5a *(200Ω + 80Ω) = 700v The voltage across the coil Switch closed 200v/1a = 200v Switch open 2.5a * 200Ω = 500v

Posted by Andrew187 5 years ago  |  last reply 5 years ago


How to time a little door so it opens at a certain time? (no need to close)?

I want to build an automatic cricket feeder for my lizard (bearded dragon) because I have to stay home at her eating times and sometimes I want or need to go out. * Ideally I would like to build a small "cabinet" with 1-3 drawers and somehow make the doors open at 11am, 4pm and 9pm, * If this is too hard one door will do but I would need to reprogram it constantly. (crickets would be inside and they would get out as soon as the door opens) * I already have a timer that I can plug and program to 23 different times so I was thinking on using that (or not), It could be something that when on opens or keeps the door open, and I can keep it off the rest of the day with the timer, I just don't know how to do this and how to do something that won't burn after a minute on because that's the minimum time the timer works. * It doesn't need to close back (and that is safer too) * It can't be light activated because some lights are on at all times and another has a timer and goes on for 20 minutes every hour. *It needs to be small because the terrarium is 18inchX18X18 and I don't want to take a lot of room Thank you so very much!!

Asked by mameloski 7 years ago  |  last reply 7 years ago


How many people on the internet at one time? Answered

Is it possible to see how many people are on the internet at a time, or on one website at a time?

Asked by Kryptonite 9 years ago  |  last reply 9 years ago


Plans for an alternate method of calculating time accurate to tenth of second ?

This is for a competition it can not use any electrical device and it must literally fit inside a 30cm cube but it can expand in after the starting bell.  If anybody can point me in the direction of plans or kits that would be awesome.

Asked by danielsb7676 9 years ago  |  last reply 9 years ago


How to make a strobe effect for that LED strip to use for a magic or time fountain?

So, i bought a long LED strip with RGB, many colours, and some modes = fade, smooth, 1 of them is "strobe". I want to know how to put that in use to make a magic/time fountain... I dont get the electrical/scheme part that much so if any1 can help what piece should i buy and where to solder it, so i make a strobe effect, strong enough to use and put to make a magic/time fountain, thanks! The Leds i bought are exactly the same as those: http://www.amazon.com/SUPERNIGHT-Changing-Flexible-Remote-Control/dp/B00BP4DUMU/ref=sr_1_25?ie=UTF8&qid=1436227822&sr=8-25&keywords=led+strip at least the small white control box is the same on the outside, i made fotos on the inside so anybody who understands it can give me a hand :P .. if i manage to find something about how to make that strobe effect ill write back! thanks in advance!

Asked by nikox 3 years ago  |  last reply 3 years ago


wilgubeast inveted a time machine

The time stamp on some of the forums is a bit screwed up, either that or wilgubest has left messages in the future  and traveled back in time to save Sarah Conner.

Posted by liquidhandwash 4 years ago  |  last reply 4 years ago