gun

I'm trying to build a semi auto rifle that doesnt shoot only little knex rods but also little round bulets i have already the mag system witch reload auto and has like 10 bullets in it but only little round bulets no knex rods and i have a little problem with the trigger :s if anyone can can help me try to build a nice trigger and i would like the slide piece couse it has more firepower if it has reactoin motion

Topic by T3453R   |  last reply


Electron gun

How can we build a heater for electron gun? can we use tungsten filament of lamp for heater ? please tell me how to build heater?????????????????????????????? thank very much

Question by esfand_mhs   |  last reply


Guns on planes? Answered

Aight so im ganna buy a pistol in South Dakota. Then im going to move to Las Vegas. Can i take this pistol and put it in my check in bag without there being a problem?

Question by jkellogg11   |  last reply


Coil Gun

HiI am planning to build a small (length about 15 cm) portable coil gun. There are some really good intructables out there. (I still don't have enough knowledge of how to build this thing) I found this site to be pretty interesting. http://www.jeffhove.com/robots/coilgunhowto.html How can I make a powerful coil gun like that with capacitors (not that whole blob of camera stuff)? I am hoping that it could be rechargeable, perhaps by a USB connector (5V). But that would not last long right? So I guess by adding some batteries would help. Trying to get this coil gun to the smallest size with a powerful blow. By the way, there is something called EMF that affects the system?Thanks

Topic by J50Nunlimited   |  last reply


PVC gun?

I'm lookin to make an air powered pvc cannon/gun/bomb. I want an explosion!!! I just need uh... "guidance" (if thats a word) on how to make one. I don't need a 50lb, 10 ft long nuclear warhead. I'm lookin for small, simple, cheap, and all at the same time HIGH POWERED AND well... uh... slightly illegal, or something...

Question by Jacko13   |  last reply


Coil Gun

Hello! I have a question. I have been looking at making a Coil gun lately and i had an idea for a simple one. Just need to know if it would work. Basically: Battery-->Switch-->Diode-->Transformer-->Coil For my Coil I am using a coil from a Pinball Machine Flipper. Just An Idea for makers of a coil gun.

Topic by BionicB   |  last reply


lego guns

Hey ive recently sorted all of my lego and so i could build guns and i was wondering if theres any really kewl lego guns on the net with instructions as i think there is more gun posibilities with lego

Topic by smidge147   |  last reply


What gun is this?

This is gonna sound silly, but I saw it on a re-run of SG-1 and it looked interesting.

Question by revelae   |  last reply


EMP Gun or ???

How do i destroy the chip in my dog.., i need to change chip do to rules in my contry.. ( paper woork ) the camera thing on youtube does not work, please help me to build a EMP gun...?

Question by Martens   |  last reply


Cmptr guns?????

Ok, on  "angry german kid vs. the virus" he has guns that can shoot on his computer. and ect. . How can I get this?????????? I really want it. Angry German Kid vs. the Virus ::: ep. 1      http://www.youtube.com/watch?v=7aVUvcFx2oM      ep. 2      http://www.youtube.com/watch?v=GeQJeDqnrhQ&feature;=related ep.3       http://www.youtube.com/watch?v=Kc8JfyAJooc&feature;=related

Question by sci4me   |  last reply


HOMEade paintball gun

Homeade paintball gun hey everybody please give me tips or designs to help me make the homeade paintball gun using PVC or other inexpensive peices!! PPPPPLLLLLLLLLLLLEEEEEEEEEEEEEAAAAAAAAAAAASSSSSSSSSSSSSEEEEEEEEEEEEE HHHHHEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLPPPPPPPPPPPPP!!!!!!!!!!!'

Topic by receiver545   |  last reply


Grappling hook gun

I want to know how to make the smallest grappling hook gun and the mot powerful

Topic by byufan   |  last reply


Beginner Coil Guns

I am looking to build my first coil gun. I don't have much experience with capacitors/capacitor banks. I'm looking for a recommendation on capacitors that I could use for a coil gun that would make a proof of concept coil gun that would be safe for my first time venturing into this area. Any Ideas? I would probably order the capacitors from Digi-Key rather then harvesting them from other electronics. Thanks!

Topic by T3rr0rByte13   |  last reply


Coil gun projectiles?

Will solid discs (think coin-sized) work as coil-gun ammunition? Or is a hole in the centre absolutely required for the eddy-currents to flow?

Question by Kiteman   |  last reply


homeade paintball gun

Hey everybody please give me tips or designs to help me make the homeade paintball gun using PVC or other inexpensive peices!!PPPPPLLLLLLLLLLLLEEEEEEEEEEEEEAAAAAAAAAAAASSSSSSSSSSSSSEEEEEEEEEEEEEHHHHHEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLPPPPPPPPPPPPP!!!!!!!!!!!'how do you like my muzzleloader paint ball berret max range 400 yd easly. the whit one is a 5 shot paintball shotgun or rilfe ( you fill it up with air then close extra valves (5 shot muzzleloader) ) .

Topic by receiver545   |  last reply


camera + gun? mod

I just stumble on this link and i liked the idea. Its about a camera that was put on a colt and worked by pulling the trigger. http://ca.gizmodo.com/5803787/who-used-this-camera+equipped-colt-38 I was asking myself if anyone know how this mod could be made. I would like to see this on a paintball of a airsoft gun :) or other gadjet. Could be a digital camera, or something new :)

Topic by Zoukiny   |  last reply


ion ray gun

Remeber a while ago I said I wanted to make some cool high voltage weapon in the shape of a gun? Well I've dicided to make an ion ray gun! The only problem is that I don't want to pay for plans (that's just not right, half the time they probably jip you). The closest thing I've found is this:http://www.freeinfosociety.com/site.php?postnum=250but that doesn't help me with saftey procosions (sorry, having a bad spelling day).Basically I need help for the schematics and the safe way to build and handle one. I don't want a wimpy one either, I want a medium power one, like do stuff from 10-20 feet or something like that.Oh and if possible, skip extra circuits by using something like this:http://www.goldmine-elec-products.com/prodinfo.asp?number=G9695I also don't mind making voltage multiplier circuits.If everything works I'll make an instructable out of it!Oh, and tech-king, you can use the sign now.

Topic by guyfrom7up   |  last reply


DIY Soldering Gun? Answered

My 40W soldering iron is a bit too weak. I've been thinking about making a soldering gun, but it confuses me a bit... Since I don't work with sensitive electronic components, I don't think there's a problem. I also like the fact that I can control the amount of heat easily... I soldering gun is pretty much a "mix" between a soldering iron and a welder, right? Similar to a hot-wire styrofoam cutter. Maybe I should call it an Incandescent soldering lamp...  A hot wire cutter is exactly like a soldering gun, except it uses a thicker, shorter, wire that has low resistance... To make one, what I need is a power supply that can supply: High current, and low voltage (Wikipedia doesn't define low voltage), right? With a 5V 40A ATX power supply, a switch, and a single core wire that has close to 0 resistance, do you think I would be able to make a soldering gun? A 5V ATX power supply is the power supply with the lowest voltage that I own.  I don't know the resistance of the wire that I can use, because I don't know what wire to use, and don't know the current it will take. I know I will need the heating wire of the tip to be a higher gauge, so it will have more resistance on high amps, and it will be the one that will heats up. From what I'm guessing, 5V is too high, and something like 1V would be better. Perhaps I'll find a way for stepping it down to a lower voltage...

Question by Yonatan24   |  last reply


FPS arcade gun

//Rustlabsthis is a project Ive been working on for a while now and am nearly finished! its a FPS shooter arcade style gun for FPS computer games. it uses robo realm software to track blue or infrared LED's (depending on the surroundings) and gives full point and shoot game play. it uses a side mounted joystick to control player movement and has many axillary controls.i will have the instructable up soon- just got to finish it up- enjoy!

Topic by rustlabs   |  last reply


Coil Gun Project

Hey guys, I am currently building my first coilgun, first of all, the components: Charging:     Disposable camera circuit x 2     2 x D cell batteries Capacitors:     2 x 1200uF 200V     2 x 680uF 200v     2 x 300uF 200V     1 x unknown (attached to camera circuit with no info) Switch:    250V @ 15A - 6 pole toggle (I will upgrade to some for of solid state when I have the money) Now, because I have two of each capacitor I have put one of each into a parallel bank, giving me 2 cap banks with one of each cap, I then connected the two banks in series, I have not done a lot of maths yet which I think I should but I was hoping that would give me 400v which seems to be average. The problem is, it is only charging to 340v tops, I think that may be due to the camera circuits being wired incorrectly. I have the two batteries in series, both charging both of the circuits, then the circuits both charge the caps, the + and - outputs meeting on the caps, am I doing that wrong? Also, does having 300uF caps in series with 1200uF caps hinder the bigger ones? Would I be better of with just the 1200uF and 680uF, or maybe even just the 2 1200uF in series? should I also leave the small cap on the circuit or take that off? Thanks in advance guys, any help would be greatly appreciated. I am having a lot of fun with this project and while I wouldnt like to be on the other end, it is still not as powerful as I would like, even for it's small size.

Topic by TristanD27 


Speech-jamming gun

Are there any instructables available when it comes to "Speech-jamming guns"? Like this: http://www.technologyreview.com/blog/arxiv/27620/

Topic by Argot   |  last reply


Coil Gun Question?

So i have a coil gun with 5 capacitors at 330v and 120 uf. If i charge them with a 9 volt battery will it burn the camera circuit out?

Question by Kante Tech   |  last reply


questions for rail gun?

I have a few questions about a rail gun project i'm working on... 1.) Where are some good places that i can buy parts for a decent railgun (i already know of some places like home depot (for the rails and casing) and radio shack (for some of the minor components)? 2.) Is there a better material (cost and in efficiency) than copper for the rail? (i heard aluminum is good, and i also heard silver is good but silver is expensive) 3.) what are good power supplies (something fairly mobile would do nicely, and i am not asking for specific requirements i am asking what other people have used as power supplies) if you commented on my last question, don't on this one please, i got your opinion. I would like an answer that is to the point please and not something that has to do with whether or not i should build a rail gun (i have gotten answers like that before which bugs me when i ask a question).

Question by Tobor 2.0   |  last reply


DIY Electrostatic Spray Gun? Answered

I heard about a new product, but it appears to be only available in Europe and South America (what the...?): http://www.hammerite.com/uk/products/ps_metalmaster.htmlSounds like it uses technology similar to powder coating, but with spray paint. Has anyone used this thing? Does it work? Is it something that could be home-built?

Question by berserk   |  last reply


Coil / Gauss Gun Question

Hi, I want to build a coil gun and i was wondering whether or not this design would work? For the battery i was thinking of using a 9volt, the multimeter is there so i can know when the capacitors are  fully charged, and the two switches on ether side of the battery is so i can disconnect it before i fire.

Topic by shadow4742   |  last reply


coil gun ammo holder

I am currently creating a coil gun within a small nerf pistol. Everything is going well, it all fits within the gun quite nicely actually. But one problem I've realized is that there is nothing keeping the ammo within the barrel (a bic pen tube)  I would like to hear some ideas on how to keep the ammunition (which is currently undecided, if that helps. I'm considering either small steel balls or nails) within the barrel until the coil is activated. It is worth noting that because of the design of this particular gun, the trigger is not a lever, but instead a simple sliding mechanism that hits a button situated right behind it. One option I'm considering is using an electromagnet hooked up to a NC (normally closed) switch also hooked up to the trigger. The magnet would keep the ammunition in place, and pulling the trigger would turn it off. I have already added a sliding switch to turn on and off the gun, and I could wire the second magnet to that switch as well. The complication I foresee arising from that is that the electromagnet may still have residual magnetism for a few milliseconds, which could hold the ammunition in place for longer than it takes the capacitors to discharge. thoughts?

Topic by berky93   |  last reply


Shell ejecting air gun?

Im making an marble air gun just like the one the teach you how to do at sentex.net and i was wondering if anyone could give drawings on how to make the marble gun eject shells? Is it possible on a home air gun? Please tell me beucause it would be really nice if i could eject shells on my homemade marble gun. And not only that but another question as well: Can i make bullets myself from melted tin?

Topic by Enzo55   |  last reply


coil gun......help please ?

Ok so i am in the middle of making a coil gun i am using a disposable camera flash circuit at the charger for the capacitors an i can get it to work but i dont think i did it right for the reason it being the projectile comes out of the tube slowly and or sometimes flys back at me.... if anyone has some answers it would be a great help or even a whole new idea would be awesome to.... i love learning new things

Question by jjohnson-9   |  last reply


AAAH THERE IS A GUN IN MY COMMENT

Dr. Weird showed me his Deagle (I think) so I made this ...................................()||||||||||||||||||||||||||||||||||||||||||||(+) |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||IIIII |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||IIIII ||||||||..........................---||||||||||||||||_(_|..........|||||||||||| |||||||..............................|||||||||||||||(..................|||||||||||| ...................................||||||||||||||(......................|||||||||||| ..................................|||||||||||||(..........................|||||||||||| .................................|||||||||||||(.............................|||||||||||| Post yours in a comment please!

Topic by Wafflicious   |  last reply


how to build a coil gun

Good day , I would like to build a coil gun but I don't want to use the disposable camera method I want to build my circuit from scratch  , I'm asking for some guidance , can you help me please 

Question by franzakeem   |  last reply


Best voltage for coil gun?

In my coil gun project I have 36 330v 120 uf flash capacitors. When I had them arranged in 4 banks of 9 linked together in series (.5*1200*1200*1000e-6 = 720J) the projectile could easily punch through cardboard. But when I tried to increase the power by making 7 banks of 5 giving me (.5*2100*2100*500e-6 = 1100J) the projectile has trouble getting through cardboard. The coil I am using is 50 feet of 22 gauge wire. Is there any thing that I am missing? Thanks.

Question by eskibro830 


Knex Gun Force Standard

The problem is that almost no one has enough room inside to shoot a knex gun unless it's a total peice of ....you get the point. But, by going outside there are many other vaiables that effect how far a gun can shoot (eg. Wind direction/ speed, trees and other obstruction, etc.) Also power as in "can shoot through can" or "through 3 sheets of hard cardboard" can also be misconstrude in the way that range from the can is a main factor, point blank range is not always the most powerful range, often 1-3 inches away has exponentially higher power. What needs to happen is a tool be built (out of K'nex, what else?) that is not only easy to use but impossible to mess up, it should be able to give 100% accurate reading for all types of guns from the weakest to the most powerful. Also in terms of different types of ammo, rod size shouldn't matter( thats what she said) the only thing that should matter in terms of ammo is whether it is deer slug, rod, sligshot/ catapult rod(a rod with something the can grab the elastic), or other and specify what that is.Range is all to often streched beyond reality by saying it can shoot 200 yards, when really it might be able to shoot 50 yards tops when pointed strait but 200 yards if it is pointed strait at the sky. We need to bulid a target that you shoot from maybe 5 feet away and something mesures force, be it cardboard, or cans, or plywood, maybe even something that leaves a dent in it and you can mesure the depth of the dent to tell you how much force (eg. 1/2"=1, 1"=2, 1 1/2"=3, etc.)Also one last idea if you would prefer to stick to range outside, is that you divide the range in feet, by the number of cardboard sheets(or other medium)the gun can shoot trough at point blank range (say it shoots 63 feet, and through 4 sheets of thick, corrugated cardboard the equation would be F= 63/4= 15.75, so your force rating would be 15.75)These are only some ideas to get all of you thinking about a standard in K'nex gun power.-TheXenk

Topic by TheXenk   |  last reply


Heat gun mod question

I am not an electrician but I like to tinker. I am just getting started with DIY type electronics kits and I have decent soldering skills. I cant say I am an expert at reading prints, but I can usually build a simple schmatic. I wish to disassemble a heat gun for parts and add in a potentiometer to vary the heat, another potentiometer to control the airflow, and a digital temperature probe with temp display. I am attempting to build a heat generating device with precise control of the temperature and airflow. I dont really want to spend $150 on a fancy LED digital display heat gun with variable heat dial, so this is my next option and potentially a heck of a lot more fun. Initially I just want to get the variable heat and airflow control(potentiometers) hooked up, and if it will be easy enough I can later install the temp display. I could always just use a cheap "laser" temp probe to check the temp and ensure it is fairly stable. The heat gun I am looking at is a piece of junk and it only has 2 temp settings. How easy is it to install a potentiometer for varying the heat and one for the airflow? I assume I can just install the one for heat control inline after the circuit that sets the maximum heat level and dial in the temp I want. As for the airflow control I assume I could do the same thing, but instead put it before the power lead feeding the fan. I am not an electrical engineer so I want to make sure this will work first before I fry my cheapo $20 heat gun. Would it be bettter to just gut the entire thing and work with the naked parts and install my own circuit to control and display the temp or could I keep the basic unit intact and mod from there? Any ideas, or a basic schematic that would satisfy this requirement would be greatly appreciated.

Topic by RokGoblin   |  last reply


Sentry Gun and PIR sensors

Hello, I have a question about PIR sensors for a robot I'm making. Most have a digital pin that goes high when movement is detected. The time that this pin stays high for (delay time) is often adjustable by a variable resistor on the sensor. My problem is that I need a sensor with no delay time - the digital pin should go low as soon as movement stops. If anyone could point me in the direction of a pir sensor with no delay time/one with a very short delay time (under 0.5s) I would be grateful. Or possibly, If I were to remove the variable resistor, would that remove the delay time? thanks.

Topic by SentryGunner 


Green spud gun propellants?

In terms of spud guns, I'm assuming that the standard propellants aren't quite "green". Does anyone know of another way of doing it?Or is it innately eco unfriendly?

Question by SenaCat   |  last reply


Frequency of Laser Tag guns

Does anyone know if Laser tag guns use infared LED's emitting at a certain frequency, If so what frequency/range of frequency

Topic by thermoelectric   |  last reply


electric gun......... Safe? + airsoft

Could you make a coil gun, instead of shooting bolts it shoots a nail. The tip of the nail is dulled. When you fire the nail accelerates to a really fast speed, hit's an airsoft pellet, the pellet goes flying, the nail head gets stuck by a mechanism (barrier). would this be safe, or be a really really bad idea and the pellet won't get that fast. Just asking cause i've always wanted to make some sort of cool electronic gizmo shaped like a gun that does cool stuff, like a coil gun, or maybe makes stuff glow or something, I dunno, something cool ;)

Topic by guyfrom7up   |  last reply


Automatic sentry gun help? Answered

I am building an automatic sentry gun, where a nerf gun, using a camera, will target a moving object, aim and shoot at it. This is a course project and the professor said I need to add an extra feature, or make it more intelligent than that to get an A. Does anyone have any ideas as to what I can add to this system to make it cooler and more A- deserving. All ideas are welcome:D Thank you!

Question by Chris414   |  last reply


Trigger Switch For Ray Gun

Greetings Space Cadets! I need help figuring out what sort of switch to use to activate the  thermo-nuclear disruptor beam of the ray gun I'm building out of a busted battery powered drill, a smoke alarm and a battery. Bet you didn't know this combination of junk is dangerous in the wrong hands? I need a switch that will work with DC current and switch on the circuit when pressed but not stay on.  Like a primitive projectile firing pistol of the 21st century this ray gun should only fire once when the power switch is pressed and not stay on continuously. Any suggestions? And yes, I'll post an 'ible when I get it done. Thanks!

Topic by 2lazy2work2nervous2steal   |  last reply


Coil Gun Charging circuits?

Ok so i made this coil gun using a camera flash circuit but im using 450V caps so the circuit only charges to about 330V how would i step up the voltage in a cheap way. Buy another camera circuit or build one? If you need any more info just ask and thank you.

Question by rocket_man 


BB Gun, shot counter? Answered

I am planning on using an Arduino nano (clone or similar) but am struggling to figure out how I can use a proximity sensor or other method to count shots fired... Am not sure if I could use IR, as don't know if it will detect a break at the velocity the BB's will be getting fired at.. When I get something put together am planning on mounting a nokia 5110/3210 in the butt so is visible, maybe a laser range finder etc.. Any ideas would be much appreciated

Question by sparks_vfr   |  last reply


Tesla Ray Gun (Bwahahaha)

I have other projects going right now and I probably wouldn't even attempt this if I could, but is it possible to use a small generator, in a backpack, to power a 15kv transformer, to power a gun similar to a Tesla coil? The user would obviously have to wear some sort of protective suit and be well grounded, and there are a butt-ton of holes it the idea. I'm just throwing the idea out there to see what happens. Any input would be appreciated. Oh, and again, I'm not doing this project, as I would likely die horribly, so neither should you.

Topic by martzsam   |  last reply


making a coil gun help

When i make a coil with magnet wire,i have enamelled wire, do i have to sand the whole thing so the copper touches in the coil, or just the ends going to where im hooking it up? EDIT: i changed my title, because i have more questions about coil guns in general.

Topic by um0123   |  last reply


A Hybrid of Coil and Rail gun

So I said i'd throw this up in the comments section on Youtube not too long ago, and I don't like it when something easy and free doesn't happen. This is some ideas and observations that have to do with coil guns (mostly). I'm in the process of finishing up several projects, so my resources are kinda spread out. I should have a prototyped coil gun finished in 2-3 weeks though, so if this doesn't clear things up, hopefully that video will. I should point out, I am a chemist with expertise in biochemistry, not electrical engineering. Basically my idea is to combine a railgun and a coil gun for the expressed purpose of avoiding the pitfalls that a pure coilgun or a pure rail gun have. At present, none of the designs out there would be capable of competing with an actual gun. By mixing the two, i'm hoping to get something that might eventually be capable of doing so. So.. I've included a very poor drawing (I'm not an artist). The barebones circuit is sketched in the lower right hand corner. The gun barrel, which is a piece of aluminum tubing split into two pieces to sever as a rail system, is sketched in the upper left, and again in the middle figure to show how to integrate the coil and rail system. Looking at the circuit design, you can see that this starts off as a very basic capacitor-inductor circuit. The charge is purposefully allowed to trickle through the circuit until the coil reaches saturation and the capacitor(s) are charged. When the trigger is pushed, the inductor side of the circuit has to dump into the rail system to complete the full closed loop. Because of the ferromagnetic material (the brown stuff), the magnetic force persists for a while (that is to say, it has high reluctance). The ferromagnetic material does one other thing that is important here. It forces the middle of the coil to be far off center. The coil is pulling the projectile into the middle of the magnetic field, but that is not necessarily in the center of the winding. Adding ferrite, or other high reluctance material, towards the end of the barrel biases the field towards that end.  At the same time that the coil stops getting current, the rail system become active. This allows a charge to pass through the bullet/projectile, and, even though the majority of the force is going to be caused by the inductive coil, the rail system allows an eddy current to setup in the bullet. This does several things. First the bullet doesn't have to be iron, nickel, or cobalt. With a stray eddy current in the projectile, any conductive material will work. The advantage here is that once the current stops, the non-magnetic material stops being  to the magnetic field, preventing backwards acceleration of the projectile as it exits the barrel.  Second, Rail systems and coil systems are not often used because they are perpendicular to one another, but, this can be used to put spin on the projectile, in a similar manner to rifling in a barrel.  After the projectile is fired, the circuit is open, preventing excessive electrical discharge.  My circuit design is really badly drawn... =T if it needs more explanation please post up questions. 

Topic by Qcks   |  last reply


Compact bubble gun mechanism?

My 7yo was begging for a bubble gun, and I promised I'd 3d print him one.  To my surprise, there are very few 3d printable bubble machine designs around, and none that match what he wants.  (He wants it to have a handle and trigger like a handgun.)  So, I suppose I'll be designing one. . . (FYI - My parts bin has plenty of fans and motors and even small liquid pumps and I am competent at 3d design. ) My challenge is that the basic rotating disk method of wetting the bubble hoops is both too bulky for a handgun-style bubble shooter, and is highly spill-able. I see online there are numerous toy bubble guns that look like what I want and appear to be much less spill-able.  However, I can't figure out from the pictures how they work, beyond that there is a pump that sends bubble solution to above the hoop and a funnel to route the excess back into the container.  How does the bubble solution get swiped across the hoop reliably? (And, yes, I know it would be easier and cheaper to just buy one.  That's not the point.)

Topic by SvdSinner   |  last reply


Automated arduino Water gun

Hi, Im looking for some advice on a current project.. The idea is to build an arduino controlled water turret that sprays water at cats in my back garden. The basis of the idea is a few PIRs to cover 360 degrees, a stepper motor and possibly a windscreen washer kit to spray the water. I want the project to be portable so dont particually want to have a mains water feed. My main issue is the method of spraying the water, Im considering a 12v pump kit but thinking there could be an issue with how far one of these pumps would actually spray the water. I have an ardunio uno and a couple PIRs and dont want to be spending a great amount of money on the project although if i can find a decent method of firing the water then i could increase the budget slightly.  Any ideas or similar projects out there where i might get some inspiration?  Any help would be appriciated

Topic by jimf1984   |  last reply


how to repair hot glue gun? Answered

..because it doesn't work. the gun is hot but it doesn't squeeze out the glue anymore. the trigger is hard and 3/4 of glue stick is still in the tube.

Question by Karletto555   |  last reply


Multistage coil gun power switching?

How can we switch power between coils on a multistage coil gun setup (3, for example)? What i am reading out there is people using physical switches to infrared sensor but i couldn't understand much especially on how can we implement it. I'll be grateful for any explanation anyone can tell me to. Thanks! Sorry for my bad english :)

Question by Vigasto   |  last reply


Is it legal to make a gun and how to do it?

First, is it legal to make a firearm in Ohio, and secondly, how might one go about such a task at hand. Note this is for recreational uses.

Question by Rebelsoulwithhatred   |  last reply


Space Elevator or Lateral Coil Gun? Answered

What would be a batter way to get off the earth, Space elevator or lateral coil gun?

Question by nfarrow   |  last reply