Touch Screen Coilgun - Featured on Hack A Day

[djgeeter]

GENIUS, well done sir. 

[coolelectronicdude]

Pretty cool man.. If u use a different type of tubing that is not metal the field from the coils will be fairly stronger. I like the adjustable controller thats pretty sweet.

[Arjoonmoal]

nice but but ugly. the only thing is the psu 14amps for charging caps. crazy likeit nice video

[acidbf]

Cool



[HawkeNYC01]

cool

[skierplaterandy]

so no capacitors? just the supply?. cool i have a supply laying around somewhere i may give this a shot. i also have some old ac motors i can pull wire from. cool. so i know u have 3 coils, but how do hey all act? are they reversing just as the projectile passes? how are they operating?

[CampKohler]

@skierplaterandy Since the projectile is not a magnet, it would be counterproductive to reverse the coils after it passes; it would tend to pull the projectile back into the gun instead of repulsing it and increasing the velocity as you might with a magnet. I believe he does it by simply timing the pulses to the coils to be just ahead of the projectile, so you have to know where it will be at any given time. You would find that out by trial and error until you get the best acceleration.

[mahela1993]

@CampKohler Even leaving the coil on (without) reversing the current) is counter productive.. The projectile will be pulled towards the center of the solenoid.

[CampKohler]

@mahela1993 I agree, and that is why I used the phrase, "timing the pulses." But instead of simply assuming where the projectile will be on its route, you might be able to use the coils themselves as sensors. Put a WEAK magnet next to the opening of a coil. Then as an iron object enters the coil, the change in reluctance would induce a small output from the coil, which could be used to trigger an accelerating pulse back into the same coil. Or the last coil triggers the next one in line.

[CampKohler]

@mahela1993 I agree, and that is why I used the phrase, "timing the pulses." But instead of simply assuming where the projectile will be on its route, you might be able to use the coils themselves as sensors. Put a WEAK magnet next to the opening of a coil. Then as an iron object enters the coil, the change in reluctance would induce a small output from the coil, which could be used to trigger an accelerating pulse back into the same coil. Or the last coil triggers the next one in line.

[PrOsThEtIcS1126]

at least he was doing something constructive

[NicksInsane]

its called a hobby. Thats what people do when they have free time. And whats wrong with having "time on your hands?"

[Halo2maniaccc]

This is really cool, its a nice proof of concept but if you wanted to use capacitors you would use scr's instead of those blue relays on the coils.

Where did you get that equipment? And how much was it? I could really use something like that!

[Shepherdd]

Capacitors where not used due to the original designer not having access to them, it's a simple work around.

[SanchezAfricano]

Where did you get that equipment?

[ConcanKillaz]

thats nice but if you added more capaciters to it to charge up more energy it will go faster and farther

[Kiriabc]

sweet!!!

[threelegduck]

hey that's a pretty sweet keypad

[TechnexLOL]

Great work, nice video chap! Very like me, haha :D.

[the1intellect]

Nice job! If you want to get rid of the controller, I've seen some guns that use an optical trigger in front of each coil, so when it passes through the first coil and sensor, the second coil is activated and so forth.

Looks like you can get your hands on some nice stuff too. I'm liking that touch screen lol If you want some powerful capacitors, find old microwaves and hack them open. I've got a 2300v capacitor out of a newer microwave, and a 1750v & 2000v out of older ones. Newer = more power.

[essaysoftware]

Get some safety glasses...

[threelegduck]

good call

you wont believe how many suckers walk around with no goggles on

[BadMuffler]

neat.. nice video nice idea nice project and nice guy.

[MrfixitRick]

Nice job...on both the device and the video!

[SeeksVE]

Very nice!

Saw you on Hack a Day. Great presentation also.

5 of 5!

[randomskk]

I love it, nice work!