Sounds like fun. I don't have any good ideas beyond what you already mentioned. I can't imagine a simple way of making the gun disable itself unless it was in your hands or whatever. I mean it'd be easy to do an RFID sensor or something in a wrist-mounted thing that the gun would recognize, but I don't know an easy way to get the gun to disable itself. Fuckin' magnets or some other miraculous wizardry.

You could have a dial on it to adjust the strength of the vibrations of the dildo in your ass? Just kidding. Maybe you could integrate some IR laser range finder? What about rigging up some sort of voice over, so when you run out of rounds it will tell you, like satnav for cars? Or you could rig up some sort of dimmer switch for a flashlight on it. Another idea is some sort of electronic pez/candy dispenser. And of course there is always a camera you could rig up to record you operating.

I think the answer is fairly simple. Pic related.

Round counter that, rather than displaying number, has some form of warning for last 5/8/whatever rounds and then a more obvious warning for when you're out. Easier to be aware of a colour change in peripheral vision than to focus on a physical counter, if less cool. Warning light is mainly to let you know that now's a good time for a tac reload if you have the time.

>>4429
or both.

>>4421
You could make a small sensor that goes on your mags that use IR sensors to gauge where the follower is. then have LED's on the unit. When the mad is full the green LED is lit, last 8 rounds yellow LED is lit, empty red LED is lit. And the unit could probably be about the size of a watch.

Accelerometer/IR gate counter would be cool too.

A range finder would be cool, but if you build one successfully you better be ready to make one for me too. I'd cover the cost and toss in a little extra of course.


Or you should do what I've wanted to try for a while. Take a tripod quick release plate and mount a picatinny rail mount to the bottom of it so that you can screw and camera on to the place and then fix the plate on your rails. Make sure that the plate is place on the mount so that the camera is centered. Now place an IR flashlight on your railz somewhere. Turn the camera and flashlight on, you now have IR NV. And if you do it right you can use the camera to aim as well as record the lulz.

delicious delicious 7 segment displays.

sounds like a fucking blast. document it, for I am of intense interest.

what do you code in?

http://www.leitner-wise.com/countashot.html

>>4437

Almost makes me wish I had a fuckton of rails on my guns. ;)

There should be some more features though for that price:
- Larger counter display or colored bars on top and below the counter.
- Green or blue display during normal use, orange counter display below 10 rounds left, red below 5 rounds. (or so, configurable by operator)

I find it fairly odd that there's no fuckton of pictures of the display etc on their site.

I also wonder where the quick reset button is for tac reloads and how they're preventing accidental reset.

Why the fuck is everyone I meet on the internet who uses an arduino on a weapons forum? OP, are you the same guy I met on 4chan's /k/ a while back? Anyway, if not I'm a fucking arduino ninja and can help you code if you want.

>>4433
I like this idea because the parts are so easy. If anything, it would be a $30 lulzy project.

>>4436
Arduinos use their own language, but it's heavily influenced by Java. Takes all of an afternoon for a novice to pick it up.

>>4446
As a matter of fact I am. Figured I'd ask the Halo kids what they could come up with. Thanks for the offer, I might take you up on that.

>>4465
got it. I figured there's no way in hell that I meet two separate arduino users on two separate arduino forums. Anyway, yeah, PM me if you want help or something.

>>4433

Ooh... I Like the magnetic proximity idea... That gets around the idea of a hard count, and accounts for a short-loaded mag... Means you never get off-count if you switch early...

Harder part is getting a sensor to work - magnet wouldn't really work unless the body was non-magnetic and the follower was either magnetic or had a magnet glued to it. Guess it depends on what your mags are made of. I also like the color changer - switch to yellow at 10 rounds, orange at 5, red at 0 maybe?

You'd need a gizmo that varies resistance based on proximity to a magnet, but there ought to be such a beasty out there... Though it seems you may need some signals processing to get a real reading - magnetic sensors are a touch finicky.

*shrug*

>>4468

Wonder if you could find a way to do a chamber loaded indicator?

Red for loaded, green for clear...

Can't quite think how you'd sense it, though, unless you wedged a pressure switch under the extractor or something, an d then you'd have a hell of a time channeling signaling wires around...

I like the temp sensor idea... you can get digital temp sensors for free online, god tier would be an IR temp sensor for maximum reliability. But the wiring would be ugly... I think the coolest/simplest thing would be an accelerometer/reed switch based shot counter with reload buttons. Perhaps you could verify a shot was fired with a microphone+transistor combined with an accelerometer.

Something relatively easy would be a Gen 0 night vision.
Basically, illuminate with IR light and view it with a cheap CVS camera.

>>4485
Would be a kickass HD system.

<farnsworth>Good news everyone!</farnsworth>

Got my Bulgarian AK-74 and guess what? An Arduino fits perfectly inside the buttstock, almost like it was made for it. Thanks for the ideas so far, all of them are solid. Looking at it closer, I have some ideas for how to wire things to the barrel, mag well, and buttstock.

- Anyone have an idea what "too hot" for an AK barrel might be in Celsius/Fahrenheit? Is such a thing even worth worrying about?
- The mags are plastic and I have six, so modifications are totally in order.
- I don't have rails ATM, but I'm sure a little bit of elbow grease and I can mount something on the bayonet lug, such as a high-powered IR bulb. If someone has a better idea where I can score some better Gen 0 goggles, I might just cannibalize this for the lulz: http://www.amazon.com/EyeClops-Vision-Infrared-Stealth-Goggles/dp/B00153F5QA Oh, an a photosensor-relay that powers it off when the light is sufficient to conserve battery power.

design an electronic device that helps you engage targets beyond effective range.

pic related.

part 2

>>4490
It would be cheaper for you to simply build a bank of IR LEDS to act as the light. Additionally, surefire sells IR filters to only allow IR light out of their lights. You may be able to find said filter cheaper somewhere else. Add in a cheap camera which can see IR light and you are good to go.

>>4491
>>4492
lol safety position

>>4485 see what I said in >>4433
Don't be stealing my thunder dawg.

But srsly, can somebody explain to me how to make an LED bank so I can make my lulzy gen0 NV?

>>4493
You can just get an IR led and put it in to a cheap-o dealextreme flashlight for like 100x the power. I've done it, it looks fucking amazing in night vision.

>>4498
LED banks are for retards, go for a single high-power IR LED.

>>4499
>implying I could wire together one LED
No srsly, I never took an electronics class in high school. I can build a lawnmower from parts, But I never learned circuit boards.

ID TAG IT

>>4500
It's actually really easy and cheap to screw around with.
- Voltage = Amps * Resistance
- I use this site: http://ledcalculator.net/
- Pick a battery, buy the right resistors, put in line, viola!
I won't pretend to write a comprehensive tutorial, because there are thousands of good ones, but instructables and youtube do a great job. Check back in if you need some help.

>>4421
>electronic matches

set it up so the trigger turns on an electric match, replace firing pin with said match. Enjoy your pulse rifle.

Whoa, I'm trying to learn some basic electronics stuff as a hobby. Learned what an Arduino is literally yesterday, and now I really want to combine my new hobby with guns. Keep us posted OP! I'm rooting for the round counter.

>>4502
So three High Output LED's with a 12v source, with 1.28v drop at 100mA would only need one 82ohm resister? Cool this shit is cheap.

Well everyone, I've decided to start construction on the round counter. For the first prototype, I'll be mounting the entire system on a spare magazine to avoid any major headaches. Right now, here is my parts list:

Arduino Pro (The Computer): http://www.sparkfun.com/commerce/product_info.php?products_id=9221

Triple Axis Accelerometer (To measure recoil): http://www.sparkfun.com/commerce/product_info.php?products_id=252
I have no idea how many G's the recoil from a 5.45 round is on an AK-74, so I went with this because A) Breakout boards are lazy-win and B) it has a 1.5, 2, 4, and 6 G-range setting. Time to break out a little science on the range; I'll set it up on the gun with my LCD to display the reading and some loose wires/gator clips to reset the range to determine how sensitive to make it.

Which is worse: Failing to record a shot, or falsely recording a shot? You guys tell me.

RGB LED (Green=Good, Blue=Warning, Red=Empty for my peripheral) http://www.sparkfun.com/commerce/product_info.php?products_id=105
Going to be mounted on the bottom left side of the mag pointed at me.

Red 7-Segment Display (For shot count) http://www.sparkfun.com/commerce/product_info.php?products_id=9766
I'm thinking since it's 4 displays, the first two are "resets" for mags shot, and the next two are round remaining.

9v Snap Connector (Battery->Arduino) http://www.sparkfun.com/commerce/product_info.php?products_id=91

Button (Mag reset) http://www.sparkfun.com/commerce/product_info.php?products_id=9190

Toggle switch (Power) http://www.sparkfun.com/commerce/product_info.php?products_id=9276

And yes, if someday I finish it I'll post all the code and diagrams so you can hack to your little heart's content.

>>4507
I'd say it not registering a shot is worse than it registering too many. Because if it doesn't register a shot you'll think you have ammo when you don't, and at that point you may as well not have it on there because it'd be about the same as just guessing how much you have. I error on the side of having it register too many as it never hurts you to reload a little early.

>>4507

Either is very bad. You're probably going to be keeping a mental tally and comparing it to the counter anyway, so if you notice a discrepancy you're going to start thinking about it, which will distract you and defeat the whole purpose of the device.

>>4509
Didn't the Japanese have a rifle with a round counter but the soldiers found it distracting so they covered it up in combat? That's really not the point, the point is when this round counter works, it will look awesome.

>>4511

Type 96 and 99 LMG. On the spine of the mag. Pretty useless in all but ideal light conditions.

>>4507
Sweet! This could end up being really cool, but don't you think the arduino might be a bit big? You could always port your code to a smaller atmel chip later on if you wanted...

A controlling counter for a small,discrete masturbator to be worn while shooting and tied to the recoil impulse of the firearm. When you shoot it could not only jack you but could count the round and the jerk.

>>4590
what the hell.

Why not just use a fucking pedometer?

>>4590
Dude that's fucking awesome!

You can have TWO hands open for your cock book!
FUCKING AWESOME.

>>4590
too tempting to waste ammo. you'd need a belt fed mg fired in FA for the last 15 min to get off.

>>4507
If I'm reading this right this whole project should cost under $100.

You need to finish it and post schematics, because I really really want to make one of these now. I'm not an electronics engineer, but my dad has 20 years of experience, and would find something like this fucking awesome.