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Drive Science
United States
เข้าร่วมเมื่อ 14 ก.พ. 2022
I’m Mike. I like cars, how they work, and the engineering behind them. If you like the same, subscribe!
Dummy Killswitch that Activates Alarm
This is a project idea I’ve had for a long time, and I finally got around to it. If you like this I’ll do more stuff like this. Thanks for watching.
Amazon Affiliate Links (means I get a cut of what you spend instead of it all going to Amazon):
Latching Relay: amzn.to/3EmKB9S
Time Delay: amzn.to/42E50RT
Siren: amzn.to/40KxmY2
Junction Box: amzn.to/3Q2gDdM
Filmed on iPhone 13 Pro & iPhone 14:
amzn.to/3Cotx2N
amzn.to/3WJFB5k
This is a killswitch. It's pretty basic - it cuts the power to the fuel pump relay, so that your car can't start. Usually, this gets installed somewhere in the cabin, and it's pretty easy to bypass if you know what you're looking for. So I decided, I was going to make one that's much more complicated, and much more difficult to bypass. I'm Mike, welcome to watching me overcomplicate simple things.
So here's what my plan is. A killswitch pretty much always looks like this. I'm going to make this a fake killswitch, that activates a siren. The real killswitch will be installed somewhere else, which I won't show on video for hopefully obvious reasons. This switch for the siren, although it sounds simple, has to be a bit complicated. There's a few things that I want to mitigate with this. I don't want the switch to immmediately activate the siren, because then the thief will immediately realize that the switch he flipped triggered a siren and turn it off. I also don't want the switch to only have a time delay, because then if the thief does figure it out, he can just turn it off. So once the siren is on, it'll stay on. But I also want to be able to turn the switch off without too much effort, without having to do any sort of unplugging or anything. I also want this to work passively - meaning that it can't draw battery power before the switch has been activated, otherwise I’ll drain my battery. So now that I have a list of impossible demands form myself, let's see what I can do.
So here's my plan. Because I don't want this to immediately activate the siren, I need a time delay. Because I want this to stay on once the switch has been activated, I need a latching relay. Because I want this to operate without drawing any power until it needs it, I can't use a microcontroller, because I'm not good enough at electrical engineering to optimize for energy efficiency. So here's what I have - I have a latching relay, that will be activated by the switch. The latching relay will then lead to a time delay, which will only provide power to the siren once the time threshold has elapsed. And then to top it all off, I have another normal relay so that these other componenets don't get fried from the power the siren will pull. I have this box here for the latching relay and time delay, which we'll install here in the cabin, and this box here for the relay in the engine compartment for the siren, and then the siren itself, which is pretty dang loud. So let's wire this up outside of the car, and then we'll get this into the car.
Okay so I’m going to mount this interior box here, and then I’ll need to run these wires into the engine compartment to this box here with the siren relay. And then the siren itself will be down here in the bumper because it’s the only place there’s room for it where it won’t be terribly in the way. And I need to get the power to come from the battery, so I’ll wire that across the cowl, and we should be good to go. I should mention that this switch here will deactivate this by decoupling the latching relay, and it’ll just sit somewhere near this box here where you can feel for it if you know what you’re looking for but you can’t see it. So now that I have a good plan for how this is supposed to go, let’s get to work actually creating this.
I think I’m done. I haven't tested it yet, so let's flip this switch here. We’re in the 10 second delay, and I’m so nervous. I have to be honest, I know you can’t tell how loud this is, but if that happened to me while I was stealing a car, people related to me would need a new pair of pants oh my god. I'm going to try it again. 10, 9, 8, 7, 6, 5, 4, 3, 2, 1. Yeah, this is awesome. Okay I really don't think I need to change anything, so let's get this installed in the car and give it a final test in the car.
Amazon Affiliate Links (means I get a cut of what you spend instead of it all going to Amazon):
Latching Relay: amzn.to/3EmKB9S
Time Delay: amzn.to/42E50RT
Siren: amzn.to/40KxmY2
Junction Box: amzn.to/3Q2gDdM
Filmed on iPhone 13 Pro & iPhone 14:
amzn.to/3Cotx2N
amzn.to/3WJFB5k
This is a killswitch. It's pretty basic - it cuts the power to the fuel pump relay, so that your car can't start. Usually, this gets installed somewhere in the cabin, and it's pretty easy to bypass if you know what you're looking for. So I decided, I was going to make one that's much more complicated, and much more difficult to bypass. I'm Mike, welcome to watching me overcomplicate simple things.
So here's what my plan is. A killswitch pretty much always looks like this. I'm going to make this a fake killswitch, that activates a siren. The real killswitch will be installed somewhere else, which I won't show on video for hopefully obvious reasons. This switch for the siren, although it sounds simple, has to be a bit complicated. There's a few things that I want to mitigate with this. I don't want the switch to immmediately activate the siren, because then the thief will immediately realize that the switch he flipped triggered a siren and turn it off. I also don't want the switch to only have a time delay, because then if the thief does figure it out, he can just turn it off. So once the siren is on, it'll stay on. But I also want to be able to turn the switch off without too much effort, without having to do any sort of unplugging or anything. I also want this to work passively - meaning that it can't draw battery power before the switch has been activated, otherwise I’ll drain my battery. So now that I have a list of impossible demands form myself, let's see what I can do.
So here's my plan. Because I don't want this to immediately activate the siren, I need a time delay. Because I want this to stay on once the switch has been activated, I need a latching relay. Because I want this to operate without drawing any power until it needs it, I can't use a microcontroller, because I'm not good enough at electrical engineering to optimize for energy efficiency. So here's what I have - I have a latching relay, that will be activated by the switch. The latching relay will then lead to a time delay, which will only provide power to the siren once the time threshold has elapsed. And then to top it all off, I have another normal relay so that these other componenets don't get fried from the power the siren will pull. I have this box here for the latching relay and time delay, which we'll install here in the cabin, and this box here for the relay in the engine compartment for the siren, and then the siren itself, which is pretty dang loud. So let's wire this up outside of the car, and then we'll get this into the car.
Okay so I’m going to mount this interior box here, and then I’ll need to run these wires into the engine compartment to this box here with the siren relay. And then the siren itself will be down here in the bumper because it’s the only place there’s room for it where it won’t be terribly in the way. And I need to get the power to come from the battery, so I’ll wire that across the cowl, and we should be good to go. I should mention that this switch here will deactivate this by decoupling the latching relay, and it’ll just sit somewhere near this box here where you can feel for it if you know what you’re looking for but you can’t see it. So now that I have a good plan for how this is supposed to go, let’s get to work actually creating this.
I think I’m done. I haven't tested it yet, so let's flip this switch here. We’re in the 10 second delay, and I’m so nervous. I have to be honest, I know you can’t tell how loud this is, but if that happened to me while I was stealing a car, people related to me would need a new pair of pants oh my god. I'm going to try it again. 10, 9, 8, 7, 6, 5, 4, 3, 2, 1. Yeah, this is awesome. Okay I really don't think I need to change anything, so let's get this installed in the car and give it a final test in the car.
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so those truck net things make your car less aerodynamic
So you, re saying there are negatives of thin oils? How come? What are those negatives? This rubber experience is ridiculous. But even with this rubber, I think you proved yourself that you are wrong. Put a grease on this rubber and see that they move even more freely. Why? Because with the the grease which is very high viscosity you have a full fluild film completely separating the two surfaces. And with the oil you put there, you dont have the fluid film between the rubber surfaces, so you have friction without fluid film and youre getting wear of the surfaces. The truth is higher viscosity means more protection from engine wear and theories about tight clearance and high viscosity oil to "thick" to flow are in general just fairy tales. Higher viscosity oil is still oil, its not a grease. Besides look at the manfacturers recommendations for different countries, they still very often allow these thick oils for the same, supposedly tight clearance engines.
It's nice, obviously with a bit of time and perfboard you could do it cheaper and more cleanly but I personally enjoy the bodged-and-zip-tied look. Wish I had the space you've got in your engine compartment. Why'd you go for the siren, though? Seems to me that it'd work nicely with a big, loud, aftermarket horn. Also, locally, this would be super non-compliant as more than one connected horn system is a no-go.
You could do this better and cheaper by making a kill switch that is triggered wirelessly through an RF remote, or your phone's wifi or bluetooth. You can then hide the switch wherever you want.
Love it when my phone dies so I can't start my car. No, wait, the opposite.
@@Bobo-ox7fj So you've never seen a car phone charger before? Good news. It's been invented.
What a fun web page. Thank you for wasting 15 minutes of my life. :) Does your wife have close friends she can bond with when you get 'these ideas'? Must be a rough life that she leads.
Unless I'm missing something, what's stopping the thief from just hotwiring the car anyway? Isn't this only effective if they notice the killswitch?
Even if you hotwire, your fuel pump would be cut off. So you’d have to wire 12v to the high-pressure fuel pump too, a bit more timely
Do you casually bring enough cable and a punch down tool to patch power to the fuel pump in every car you steal? Or do you just move on to the next car?
Man I really need to start making electronics for cars If my count is right you someone managed to spend $50 for 12v latching relay, a timer, and a plastic box Yall will spend so much for the simplest things 😂
I pay for the time savings. $50 and 2 days or $15 and 5 weeks
Haha this is great
Mine release the potassium chloride gas then pull the door in, close the windows and locks, disable the doors.
Then the chlorine gas capsule breaks emitting a 'green mist of death'.
i just take my engine with me anytime i leave my car.
Between "2:45am" and "the next day," you shaved, got a hair cut and *you rejunivated 10 years in a oxygen tent with Bubbles the monkey.* 🙂 Which state are you in? City or rural? Why do you feel the need to secure youre vehicle like this? Are there bad people living in your neighbourhood? *Great Project. Thanks for sharing.*
LA-OC area. I live in a nice enough area but sometimes I go to places that aren’t
I sure as hell ain't coming to your door at Halloween. I wouldn't notice that the toffee candies were actually plastic explosives'!
Great explanation 👍
You should also make it very difficult to pop the hood so they can't disconnect the battery.
Great idea
Aaaa. That is when the explosives' kick in.
It's metal to metal not rubber
Thicker oil is always better do a dyno oil test
I love it! Haha this is exactly my kind of Rube Goldberg shenanigans. You really cracked me up at 4:29 after testing it, big smile, silently shaking your head for ten seconds, your sleep deprived brain marveling that you walked that fine line between genius and insanity, and actually came out on top... lol.
That does not make any sense! Hi Performace Engines use thicker oil as do heavy diuty trucks - buses and vans. If thin oils were adiquite at all tempatures and working conditions there would be no need for various viscosities. I do not know what enviormental rules are in Japan but in the US Café Laws dictate auto enginering.
So you’re suggesting that they are using oils that help them with cafe standards requirements, but are ultimately damaging to the engines. Talk about not making any sense! Fuel waste and engine wear have the exact same enemy - friction (and the heat it generates). Please tell me how an oil could simultaneously improve one without the other.
@@williamfrench9973 Auto makres agenda is to sell cars. There is no profit in makeing a vehicle that last 20 yeas and can go 500,000 miles. If 8 - 16 or 20 weight oils were so good then why are they still makeing the 30s - 40s -50 oil for heavy duty vehicles. Viscosity still follows the rules of science, "heat thins out oils to the point where it can no longer lubricate and protect vital parts."
So a couple things. The reason different weight oils exist is because there are different demands on the oil (operating temperature, load, etc) and different weight oils perform differently based on these demands. I’m definitely not saying to use 0W-08 oil in an engine calling for 20W-50, that would be foolish. However, a low weight oil is not inherently bad - and oils have progressed so much to a point that a low weight oil can provide the same amount of protection as a 10W-30 oil did in the past. Also, I see that you state that oil thins to the point it cannot lubricate anymore. Oil only thins to a point, based on factors like temp, duty cycle, etc, and then at that point we have to determine if it provides enough lubricity. If it still provides adequate lubricity (and to a certain point, cooling) then that oil is fine for that application, albeit not necessarily others.
Well the amps are way too high that’s why your fuse box has a 15-20 amp fuse for the horn opposed to the possible 600 amps the battery can produce directly wired into the horns
That’s not how batteries work. Batteries don’t push current like that, devices (loads) draw current. Fuses protect for short circuits
She doesn’t want an answer. She wants to get in front of a camera and yap
I guess I fit that bill too
Water is the final oxidation state of hydrogen unfortunately, not like sulfur where sulfur and even sulfur oxide can combust further, there is whole science behind new hydrogen fueled car which is overblown and will never be economically viable, even if we can make somehow efficient way of separating (by solar or wind), you still have to store smallest element in universe and prevent diffusion and reduction (hydrogen can reducce many metals)
I use 0W-20 SP 100% synthetic
My 1st and 2nd gear also sound like that and it got no strait gears (when it was put in lol).
You showed in this how easy it is to do manually… he didn’t say headrests themselves were useless. Maybe go back to turning some wrenches
So easy yet nobody does it, making the automatic headrests worthwhile
@ that’s assuming they’ll manually touch the button if they aren’t willing to manually touch the headrest to lift it up
Some woman probably: “Omg another guy mansplaining” 🤣
Lego strikes again
I trust scotty 👍👍👍
Now do with tonneau cover on
Cheap will cause misfires even tho they seem like they are working fine
So why we don't build a better technology than air bag
Very interesting! I was surprised to see you didn’t have over a million subs
How can i buy 1?
Have $3m and know a guy, or $20m if you don’t know a guy
if getting a new cat will cost more than the car is worth and inspection is due yes you do poor laquer thinner into your car GAS TANK not engine
My wife’s 2015 Kia soul is stuck. The wheel won’t turn and the ignition won’t turn. The wheel turns just a slight bit but won’t unlock for key to turn
I don't think the girl would fully understand that guys explanation
Well we found the sexist
@drive.science wasn't thinking about it in that regard, but now that u said it.. I guess I'm guilty 🙋🏻♂️
We can explain but its not like people would care for the answer anyway, like most, people just want to complain.
Cool thanks for explaining
Hmm, and the energy and resources we use to make gasoline seems worth it?
Right? The problem is water is pretty much infinite and oil is “2 years away from running out”
Well yeah, because there’s actually energy that can be harvested, as opposed to water
When you talk, you should do it over the toilet.
👏👏👏👏 Clear and concise explanation. Very good video.
I genuinely thought that this was a big channel, but it's actually very small! Very high quality!
Same
Thanks man, I appreciate it
I put the "a premium" brand on my nc miata a couple months ago and they are still working fine also i recommend that if yours are still working even working bad just keep them in your vehicle in case that one or more of those randomly dies while driving or in a trip
Especially if you drive something a bit more uncommon
Isn’t metal wayyy cheaper????
Yeah, but heavier. And Porsche wouldn’t be Porsche if they didn’t do something wildly unnecessary
@ lol true
Thank you for saying this. Most people don’t realize that “carbon fiber” is in fact a type of fiberglass and that it is CFRP and is plenty strong enough
wow, thanks. didnt think about that
Yep, I thought the additional rake I got from my higher rear lift would compensate but after a couple people flashing me I had to go adjust them.
Thats Cap techron wrks amazing in my car.
Scotty is the effin man!
Was just at Chevy dealer... mechanic with 40 years experience AGREES with scotty... this guy Mike,,, uneducated.. you can be a car enthusiast... that doesnt make you a mechanic.... just sayn
Nah, I'll just put a bar of soap in there lmao 😂😂😂😂😂
They wanted to save money as I don't give a f**k mindset so that the cheap straight teeth are needlessly applied instead of more costly and higher quality of non-noise pollution Helical teeth.