airsofthacks.com - 3 Round Burst Testing

thermo

Leftyflip wrote: »

I'll volunteer too, ya know just cos, you need more than one and stuff ¬¬

Ah sure I'll volunteer too so

kdouglas

ha, thanks lads... now what if I say the prototypes will cost 100euro? Still wanna volunteer?
(just kidding, beta testers will, at the very least, get them for cost price, maybe free if i'm feeling generous)

Anyway, I've ordered parts to make one prototype small enough to install into an AEG, once I get that sorted in my own gun I'll look into getting beta-tester prototypes made, probably just 2 or 3.

I'm also open to idea's as to what other things I could do with this, it is fully programmable and I'm going to look into mimicking alot of the functionality of the extreme-fire unit, such as automatic burst timing adjustment, feedback through vibrating the motor etc... but in theory, I could even add an LCD screen with shot counter into this thing (expensive though).

DeBurca

I think its just great and would be happy to help with the testing

Private Snafu

I'd love to help out however I can if it means beta testing I'll gladly do it

pyro jim

same here if you need a hand, i'd happily pay, 3 round bursts would be the job.

AlternateID

How small do you think you can get these Keith? There's not a lot of room in my current gun.

Shiva

kdouglas wrote: »

I'm also open to idea's as to what other things I could do with this

Y'know what'd be cool ? You could hook up a mobile phone speaker to it, and program it so that 2.5 seconds after an adjustable number of trigger pulls, a voice screams "HERE YOU - TAKE YOR FUKKIN HITS !!!"

Masada

I'll test one if ya want keith.,:)

Since your looking for idea's too though, an integrated auto reset fuse would be a god send i reckon, if its not already there/on the cards.

P.K

If your still looking for testers i can give a hand if needed

kdouglas

AlternateID wrote: »

How small do you think you can get these Keith? There's not a lot of room in my current gun.

I reckon about 3-3.5cm long by about 2cm wide and about 0.5cm deep, approximately the same size as extreme-fire's sw-evolution I think.

kdouglas

Shiva wrote: »

Y'know what'd be cool ? You could hook up a mobile phone speaker to it, and program it so that 2.5 seconds after an adjustable number of trigger pulls, a voice screams "HERE YOU - TAKE YOR FUKKIN HITS !!!"

Very very tempting

hrta

kdouglas wrote: »

ha, thanks lads... now what if I say the prototypes will cost 100euro? Still wanna volunteer?
(just kidding, beta testers will, at the very least, get them for cost price, maybe free if i'm feeling generous)

Anyway, I've ordered parts to make one prototype small enough to install into an AEG, once I get that sorted in my own gun I'll look into getting beta-tester prototypes made, probably just 2 or 3.

I'm also open to idea's as to what other things I could do with this, it is fully programmable and I'm going to look into mimicking alot of the functionality of the extreme-fire unit, such as automatic burst timing adjustment, feedback through vibrating the motor etc... but in theory, I could even add an LCD screen with shot counter into this thing (expensive though).

Some thing, to simulate, round jams, And when your out of ammo, for mid caps, some micro sw, or some thing like that.

Private Snafu

the ability to stop the AEG firing after a programmed amount of shots requiring a reload to continue..... would be handy

desertstorm

program to give effects of overheating for MG's

such as in most computer games where after X time firing an MG, you have to wait for the thing to cool down

just out of interest what language are you using for the programming? Basic?

kdouglas

hrta wrote: »

Some thing, to simulate, round jams, And when your out of ammo, for mid caps, some micro sw, or some thing like that.

lperrozzi wrote: »

the ability to stop the AEG firing after a programmed amount of shots requiring a reload to continue..... would be handy

Both doable but would require extra wiring in the AEG to have a "reload" switch somewhere, probably hooked up to the charging handle or some such, so while I could program this in, every AEG would be slightly different in how you would install the switch and what size you could fit.

desertstorm wrote: »

program to give effects of overheating for MG's

such as in most computer games where after X time firing an MG, you have to wait for the thing to cool down

just out of interest what language are you using for the programming? Basic?

The environment I'm using uses Processing, which is basically C and can make use of C libraries.

Stercus Accidit

Re: Empty mag stopping an aeg from firing;

Have a look at the cut off switch in Star auto winder mags, a similar micro switch in the feed tube of the hop up could determine if the mag is empty, ie, no pressure in the feed tube, then you would have an aeg that would stop firing on empty.

Simply have the micro switch in circuit with the trigger switch leading to a standard mosfet.

kdouglas

Stercus Accidit wrote: »

Re: Empty mag stopping an aeg from firing;

Have a look at the cut off switch in Star auto winder mags, a similar micro switch in the feed tube of the hop up could determine if the mag is empty, ie, no pressure in the feed tube, then you would have an aeg that would stop firing on empty.

Simply have the micro switch in circuit with the trigger switch leading to a standard mosfet.

That's a fairly straightforward mod to do the way you describe, and wouldn't even need a microcontroller to do it.

Unfortunately the really fancy stuff like anti-dry fire, realistic reloads etc... tends to require modifications to the AEG beyond that of your average skirmisher.



In other news, got the miniature version of the microcontroller I ordered this morning, it's quite small and thinner than I expected, adding in a couple of mosfets and possibly an auto reset fuse and this should still be quite a small little package.

I've done a bit of playing around with it today and got it set up for programming, also tested code that will allow me to vibrate the motor (without firing the AEG) to give user feedback, credit to gandolf from extreme fire for the idea of how to do this from his sw- series computers.

kdouglas

An interesting day of testing, I've blown up several mosfets and fried one of my microcontroller boards (note to self; overvoltage is a bad thing) but thankfully I have spares.

I've done a fair bit of playing with the code and now have the ability to use trigger pulls for user-programming with motor vibration as feedback.

Setup modes for normal, 3 round burst with full auto roll over and locked single shot only mode (no full auto at all).

Have also written the code necessary to adjust the 3 round burst timing on the fly, this will allow for different gun setups (battery, motor, gearing, all affect timing) and also adjust the burst time as your battery gets lower.

kdouglas

Random trigger jams anyone?

I have it set to 1 in a 1000, which means if you're anything like me and generally use single shot/bursts most of the time, you could easily go through a days skirmish and not have a jam occur.

I'd like to alter the random jam code so that the more often you shoot in full auto, the more likely you are to have a jam, I'll think about it a bit today and see what I can come up with.

In the meantime, anyone have any thoughts on the probability of a jam occuring? is 1/1000 too high/too low?

MerryDespot

Ok - I know we need to be careful with wikipedia, but think for what you're asking this is ok.

60,000 rounds fired - stoppages were:
SCAR - 226
XM8 - 127
M4 - 882
HK416 - 223

So dividing by sixty (and rounding) - this gives:
SCAR - 4
XM8 - 2
M4 (a woeful) - 15
HK416 - 4

Here's the 'source':

http://en.wikipedia.org/wiki/FN_SCAR

kdouglas

Thanks for that, I'm thinking I'll allow it to be user-programmable (in increments of 500/1000), although I'm wary of making the amount of options too complex otherwise no one will be able to use the bloody thing.

Stercus Accidit

I read about those tests, most of the HK416 stoppages were from one rifle iirc, so it was a faulty unit, the real life reliability would be better than the stats there I'd imagine.

kdouglas

How does this sound?

Assuming a gun which will jam once every 2 thousand rounds under optimum conditions (no prolonged bursts or full auto fire) and about once every 500 rounds under heavy use.

So we start with a probability of 1 in 1000

Every time we pull the trigger, the probability of a jam increases. (up to a maximum of 1 in 500)

For every 10 seconds that passes that we dont pull the trigger, the probability of a jam decreases. (up to a minimum of 1 in 2000)





Hopefully I've explained this clearly, all the numbers can be fairly easily altered to better reflect realistic values, this is just the defaults im going with to test this atm.

MerryDespot

Sounds good - and nicely ties in to the old notion that if you abuse it it'll abuse you. I think trying to program better/worse reliability depending on the aeg type (to reflect real world reliability issues) would be a nightmare.

kdouglas

Well yea, if you wanted better reliability from an AK than from an M4 etc... etc... you're getting into a world of far too many unknowns. For the few people who will actually use the random jams functionality, it's not worth the effort to be honest. (although I am now tempted to use it in one of my own AEGs, see how it feels knowing that a gun jam could happen at any time.)


So, I'm fairly happy with how this is going so far, and I would like to see it get into some guns and be tested.

If anyone is interested, I'm offering pre-release tester units for less than cost price at €30 each. There will be a maximum of 5 available and will be available strictly on a first come first served basis.

The only thing I ask is that you are able to install a mosfet yourself and can provide me with details of your setup (AEG make, model, battery type, modifications to the AEG) and you are willing to email me details of your experience with the unit.

Retail price if/when I start to sell production versions of these will likely be somewhere in the region of €80.

Once I receive payment for 5, I will order the components, these should take no more than a week to arrive and once assembled and programmed I will post the unit out to you.

Leftyflip

I'll take one.

kdouglas

Leftyflip wrote: »

I'll take one.

That's the first one gone to Leftyflip, PM me for paypal details good sir

Rhinocharge

I'm interested. I'll take 1.

defenderdude

I'll take one Keith.

thermo

i sent you a pm there keith about takin one.