Fire Alarm Science Project - In-Depth - 2 of 2

[phonejoey]

how do you make it

[rmoore69]

cooooooooooooooooooooooooooooo­ooool fire alarm

[detviet]

check my video i have homemade alarm that i buy from dollar store check it out to find out how.

[SuperCrazyStorm]

Took my fire alarm to school let the teachers and students and even the princapal pull it and they loved it.

[Zantiln]

lol...

[computerTube3000]

i have that faraday panel on the bottom. heck out my chanel.

[computerTube3000]

i met check out my chanel/videos. sorry.

[brettman273]

Thanks for the suggestion but as it turns out that's how the flasher operates. It simply shunts power back to ground which normally would be the car frame and essentially becomes a heating element for the small amount of time it's off, the heat expands the bimetallic strip, it expands and cuts the connection thereby resetting the cycle.

[elliottveares]

there may be a short or somthing wired incrcley if the flasher is turning the whole system on and off,try swaping the flasher and the ralay

[Electrotime]

im geting a bell and i want it to do march time code . what can i do to make it do march time because i dont have a panel and the bell is 24volts. is there something small i can get at radio shack to do that?

[Electrotime]

can i just put a flasher on my system without a relay and still have it do march time?

[brettman273]

The problem with that is the current required by a bell/horn - flashers are meant to flash low current light bulbs and tend to behave unpredictably under high current load. You can try - worst case scenario is it won't work or it will fry the flasher.

[brettman273]

Well, as it's a science project meant to demonstrate the basics of electricity in an elementary school science fair, I wasn't too concerned about its ability to actually warn of a fire.

[Electrotime]

if your not alowed to use ac power from an outlet you could use a transformer and that gets its power from the battery and gives the alarm a boost. and where did you get the flasher switch?

[rocnazgrel]

No need for a boost - the system is designed to run on 12 volts DC except for the horn; however, it runs on 12 volts without a problem. The flasher is a simple automotive flasher available at any auto parts store.

[Firealarm101]

can you show me how you hooked up the pull station

[brettman273]

The video clearly shows all of the wiring. The pull station is nothing more than a switch.

[Firealarm101]

HEy Um do u have an extra b key To reset This Pull station and i just got a new simplex Pull station but i dont have the key could like make me one or somthin

[brettman273]

Your best bet is to check eBay; sometimes there are keys, but more often there are old simplex pulls with keys that usually go for less than 10 bucks.

[peanutclaus]

did you ever get the school to let you set it off?

[firealarmfreak]

how do i connect a momentery switch to my homemade control panel?

[brettman273]

A momentary switch connects just like a normally closed or open switch, but you need a latching circuit in order for the alarm to stay activated.

[firealarmfreak]

ya i have a latching circuit, im using a relay

[brownguyrav2007]

I dont know how to make a latching circuit on my fire alarm panel. So when I reset my callpont the alarm stops. HELP what do I do???

[firealarmfreak]

actuallyi phrased my question bad...sorry...my question was...how do i connect a momentery switch to my homemade panel to create a silence switch for the bell? my latching circuit is a relay.

[brownguyrav2007]

I dont know how to make a latching circuit on my fire alarm panel. So when I reset my callpont the alarm stops. HELP what do I do???

[thehate448]

nerds rule!! rock on dude!!!!!! nice alarm

[knightz94]

NERDS

[brettman273]

Yes, and you will be mopping the floor in our giant offices when you grow up.

[m4LeBawKs]

O YEA ROCK ON!!!

[brettman273]

lol thanks. Keyboard Commandos who troll YoutTube insulting things they can't possibly understand don't intimidate me in the least :)

[showmechris]

how old is your nephew?

[showmechris]

how did u create a silence switch?

in fact, im looking at using a pc boaed and buying the components and creating a basic panel, but how would u create a silence and reset switch?

[Goldenrod636]

What kind of alarm is it? What model?

[petergriffman]

If u sell it ,how much?

[ethanrf]

I have a Mirtone pull station which operates between 15.2 and 19.95 VDC and I also have a Simplex 4903-9237 which operates between 23.5 and 29 VDC how can I get a power source which accomadates both units without a control panel and also how would I wire the 2 together

Thank You

[wtf88skullu]

what did he get on hhis project?

your nephue?

[brettman273]

He won.

[sirengeek]

thats cool,i was ib walmart the other day and they tested it. it sounded like a loud whisle!it is LOUD!!!!!

[buttfudge666]

that was cool. whats the fire alarm for again?

[brettman273]

This one was a science project for my 8 year old (now 9) nephew.

[buttfudge666]

ooh,well thats awesome. i want one for my room.... u know.. wake ppl up at night :P

[mikemcgill23451]

almost sounds like the horns in march time

[brettman273]

That was the idea - the car flasher is the best low-budget subsititute for a march-time circuit I could think of; however, I have no control over the frequency.

[kahikilani07]

wow, you guys did a really good job with this. did i hear you mention that it was a science project?

[brettman273]

Yeah, for my 8-year old nephew. He was very popular at his science fair ;)

[kahikilani07]

well, you guys did a great job with it!

[firealarmfreak]

im sure he was, thats really cool.

hopefully no kids decided to pull the school alarm cuz they liked his and thought it would be funny.

[elliottveares]

why did you not get 2 12 volt batries and wire them in seiries.

[brettman273]

Simple - only the horn ran on 24 volts - i would have not been able to easily get 24V lamps in town and I've never seen a 24V electromechanical flasher, and the batteries are 20 bucks each - I was trying to keep the cost down.

[elliottveares]

i live in the uk how much is 20 bucks

[brettman273]

'bout 10 quid, mate :)

[Stealthguy06]

is that an ADA compliant 7002t?

[danll5]

No, thats a 34T with a strobe plate.

[danll5]

No wait, shoot I lost it the model number!

[mallmaven60]

The 7002 has the strobe right on top of the horn

[kerplunk1796]

do you spend alotoftime at RadioShack?

[brettman273]

Ha ha.....nah...they're too expensive and never have what I need.

[firealarm78590]

how could i connect a cheap battery pwoerd smoke alarm to mine? it doesnt have a panel just direct to 2 buzzers, however i wanna connect it to a smoke alarm so wen its pulled those 2 buzzers go off and the smoke alarm goes, and wen theres fire underr the smoke alarm all 3 sound? is that possible?

[brownguyrav2007]

yes it is, I did that on one of the UK smoke alarms and connected it to an electronic sounder but I cant remember how I did it!

[firealarm911]

It's cool that the red led lights flash on and off

[JLiza]

So. Did you figure out what you are going to do about the school?

[brettman273]

Yes, in fact; during school they will take it outside (weather permitting), or into a classroom and set it off for the kids (the science projects will be on display all week in the school for the kids to see) The fair is Thursday night (3/22)and they will just make an announcement every now and then an set it off. The rest of the time the horn will be silenced.

[JLiza]

Good because I imagine that it would not be a good think if everybody thinks there is a drill. :)

[firealarm78590]

thats very good.

[theofficalmiga]

Was that a Butterfinger candy bar on the floor?

Good video.

[brettman273]

I don;t think so....just tools lol