AS-[WIP]-50

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
User avatar
smirpab
Private 4
Private 4
Posts: 75
Joined: Sat Jan 23, 2010 6:50 pm
Location: France
Contact:

Mon Nov 05, 2012 1:00 pm

Hi all,

The project still ongoing, having received my adapter G36/M4 last Friday, I finally got to work on it.

So it's pretty simple, I cut all the dead volume of the room, once adapted to piston charger, you get this:
Image

I also ordered last month a prototyping PCB for Arduino Uno to put all the electronics:
Image

I'm still missing the charger that is being delivered, I will have to receive Wednesday to Thursday.
So soon find it for shooting video with a real supply of ammunition!
User avatar
POLAND_SPUD
Captain
Captain
Posts: 5402
Joined: Sat Oct 13, 2007 4:43 pm
Been thanked: 1 time

Mon Nov 05, 2012 1:51 pm

Nice
keep us updated

have you considered programming an attiny chip and putting the entire circuit on a perfoboard (for the final version naturally)?
that way you could make it more compact and still have arduino for other stuff
Children are the future

unless we stop them now
User avatar
smirpab
Private 4
Private 4
Posts: 75
Joined: Sat Jan 23, 2010 6:50 pm
Location: France
Contact:

Mon Nov 05, 2012 1:58 pm

It is true that it is a good idea!
But I do not know programming set "Attiny".
User avatar
POLAND_SPUD
Captain
Captain
Posts: 5402
Joined: Sat Oct 13, 2007 4:43 pm
Been thanked: 1 time

Mon Nov 05, 2012 3:15 pm



or if attiny wouldn't be up to the job you might as well use an atmega chip
Children are the future

unless we stop them now
User avatar
smirpab
Private 4
Private 4
Posts: 75
Joined: Sat Jan 23, 2010 6:50 pm
Location: France
Contact:

Mon Nov 05, 2012 3:42 pm

Thank you very much for the video.
If I do not have enough room to put my Arduino Uno in the carcass, I réviserai my choice ;).
User avatar
smirpab
Private 4
Private 4
Posts: 75
Joined: Sat Jan 23, 2010 6:50 pm
Location: France
Contact:

Tue Nov 13, 2012 5:07 pm

Some pictures of Developed :

Image

Image

Image

Image
User avatar
smirpab
Private 4
Private 4
Posts: 75
Joined: Sat Jan 23, 2010 6:50 pm
Location: France
Contact:

Mon Nov 19, 2012 1:33 pm

[youtube][/youtube]
User avatar
Petitlu
Corporal 4
Corporal 4
Posts: 807
Joined: Fri Jun 03, 2011 4:52 am

Mon Nov 19, 2012 2:09 pm

Nice !!! :hello1:
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26179
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 543 times
Been thanked: 321 times

Donating Members

Mon Nov 19, 2012 2:35 pm

Oooooh very nice! Power is not extraordinary but I love the selectable rates of fire and reliable feeding, bravo!
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
smirpab
Private 4
Private 4
Posts: 75
Joined: Sat Jan 23, 2010 6:50 pm
Location: France
Contact:

Mon Nov 19, 2012 2:47 pm

Thank you!

There will surely other test later
ThorSpuds
Recruit
Recruit
Posts: 2
Joined: Tue Nov 27, 2012 10:33 am

Tue Nov 27, 2012 10:35 am

Very nice! Love the design.
User avatar
al-xg
Corporal 2
Corporal 2
Great Britain
Posts: 643
Joined: Fri Jan 19, 2007 12:29 pm

Tue Nov 27, 2012 2:39 pm

Well considering it's only being used at 3 and 4 bar, there is scope for quite a bit of extra power as long as the flow through the 3/2valve is good enough to fill the chamber in time at higher pressures.


Can you adjust the rate of fire of the 3 round burst separately from the full auto?
When I was experimenting with my code I found that the 3 round burst seemed a lot cooler when it was faster than the basic full auto :)
User avatar
smirpab
Private 4
Private 4
Posts: 75
Joined: Sat Jan 23, 2010 6:50 pm
Location: France
Contact:

Tue Nov 27, 2012 3:41 pm

Thank you!

The rate remains the same for all, if I'm 8cp/s semi-automatic, when I pass in automatic or burst 3cps, I'll always be 8cp/s.
User avatar
GonzoInferno
Private 2
Private 2
Posts: 30
Joined: Mon Nov 05, 2012 8:24 am
Location: New Orleans, LA

Tue Nov 27, 2012 6:11 pm

I really appreciate the steady progress on this project. Coming along nicely. And kudos to you for keeping to your original concepts. If keeping my boss happy (and wife and children and pets and etc) didn't take all of my time... oh the possibilities.
User avatar
smirpab
Private 4
Private 4
Posts: 75
Joined: Sat Jan 23, 2010 6:50 pm
Location: France
Contact:

Thu Dec 13, 2012 3:18 pm

Hi all,

For two days, I could make a silencer for my pac.
It consists of a stainless steel tube 304L 1 "1/4" (Ø42mm). For noise reduction, I opted for the towel 5/6tours "professional" with behind wool insulation for tanks that are carried out in boiler.

It reduces a lot of noise, I was impressed, vacuum, I heard that the exhaust air out of the distributor.

Once everything is soldered, the more I machined around the poor:

Image

Image

Image

Image
Post Reply