PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Jan 25, 2005 0:11:10 GMT -5
anybody in here going into electrical or mechanical engineering? maybe even industrial? I need to find some information about either solenoids, or pneumatic actuators need something capable of operating at about 100 hz. really really fast. 1 inch stroke, force essentially nil, just the mass of the actuator plus 10 grams or so. suggestions, ideas, know someone who might know? obviously some of the details are missing: controls, an additional sensor, the solenoid valve(s) [depending on whether the bolt is directly solenoid actuated, or through a pneumatic cylinder using another solenoid valve to operate it] and some mechanical triggers for that additional sensor, but the basic idea of it is there. figure about an inch and a half wide, 2 inches tall, 6 inches long not including a barrel or a hopper, capable of as many RPM as can be fed into it. so, am I just crazy, or does this have a chance?
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Tharnex
yah....i spend a lot of time here
Sargeant
Posts: 122
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Post by Tharnex on Jan 25, 2005 0:15:50 GMT -5
i would post in the forums @ www.pbnation.com that have loads of ppl who are uber smart.. Also that is the way most electric markers work. you can get that eye either in breakbeam or bounce beam, with a t-board, the t board increases your max bps to 32 cycles per sec. they now have this new chip to go along with the t-board called the t-chip. it basically caps your marker. the fastest types of markers are the blowbacks(spyders, pmi, and the ilk) which have a cycle rate of 62 cyc/sec. finding a hopper to go that fast is impossible right now. the fastest one is the Q-loader which goes at 30-32bps. so shane your hopes of having a super chain paintball gun, i hate to say it are slim. you can purchase the t-board for like $65 with eyes and the t chip is like an extra $20. you need to take the marker in to an air smith to drill the eyes, you don't want to mess up something like that:) hope this helps
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PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Jan 25, 2005 0:19:26 GMT -5
checking that out now, thanks. anyone else with other ideas?
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Tharnex
yah....i spend a lot of time here
Sargeant
Posts: 122
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Post by Tharnex on Jan 25, 2005 0:28:38 GMT -5
updated^^^^^
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PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Jan 25, 2005 0:48:20 GMT -5
the control board is probably gonna be based on a PIC16XXX microcontroller, two optoelectric sensors (they're a few cents a piece from an actual electronics store), and a PWM driver for the solenoid/solenoid valve(s) and the marker itself is likely gonna start out life as a block of aluminum from the scrapyard. I'm a DIY kind of geek if I can manage it.
I mentioned the q-loader in the pic, something like that is gonna be the best way to go. only way to go really. Unless I can come up with another better idea for forced mechanical loading. one thing not in the drawing, is that I can have another rod coming out the back end of the solenoid that can be used to push something with when the bolt is being pulled back. that motion could possibly be used to push some sort of cam that would turn something, moving a paintball down the feed tube, etc, etc
drilling out all the necessary holes and getting them tapped isn't a big deal at all. I already have the proper bit for the bore of the body (11/16 or .6875, after a bit of polishing and honing, it'd come out a little bit bigger as needed ), and I most likely already have the proper bits and taps for the smaller holes here and there as well
oh, and there would be no blowback in this, no need for it because the bolt would be electrically or pneumatically operated, and air consumption will drop (or at least should. if a solenoid isn't capable of directly actuating the bolt, the pneumatic cylinder used instead should still use less air than what is consumed by blowback cycling)
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PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Jan 26, 2005 2:21:33 GMT -5
for what it's worth, I just ordered a sample PIC16F88 pic microcontroller from microchip, and spent a decent portion of time looking up circuits for optoelectric interrupters still have to figure out the solenoids/actuators though (update) I posted a question about them in a rather technical forum, eng-tips www.eng-tips.com/viewthread.cfm?qid=113605&page=1. lots of smart people there too **crosses fingers**
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DarkNeopagan
damn i love posting here!
1st Sargeant
"One case, One kill" Broadsword Motto
Posts: 185
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Post by DarkNeopagan on Jan 26, 2005 20:23:29 GMT -5
a lot of companies that sell aftermarket car parts make solenoids for stuff on cars (who says i wasted time watching "pimp my ride"), one of these may work.
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PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Jan 26, 2005 23:37:25 GMT -5
yea, I've looked through catalogues from about 5 different solenoid manufacturer, they're all pretty much to big and slow /me grumbles
I have it on good authority that 100hz solenoids with that much stroke aren't gonna happen, but pneumatics are doable.
so on to sourcing some very small pneumatic cylinders, and a fast acting solenoid valve to actuate them
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PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Jan 31, 2005 11:36:42 GMT -5
Just got the sample microcontrollers fedex direct from the manufacture in taiwan, arrived this morning :-D
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Post by johnjacobjingleheimerschmidt on Jan 31, 2005 11:44:41 GMT -5
YUMMY!
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Tharnex
yah....i spend a lot of time here
Sargeant
Posts: 122
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Post by Tharnex on Jan 31, 2005 22:58:15 GMT -5
so do you think that is 'marker' will be ready for some paint by game time?
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PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Feb 1, 2005 2:06:11 GMT -5
sure as hell hope so
oh, and i bought a programmer for the microcontroller today (erm, well, yesterday?)
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PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Feb 2, 2005 22:17:40 GMT -5
anybody have access to a lathe to turn down some delrin to the proper diameter for a bolt? I can probably manage to do it on my drill press if necessary, but obviously a lathe would work better
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PoeticInjustice
more magical than the magicalest
teh cut3 on3's bitch
My name is Inigo Montoya. You killed my father. Prepare to die.
Posts: 300
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Post by PoeticInjustice on Feb 7, 2005 16:25:44 GMT -5
got the microcontroller programmer today, gonna wire up a hello world style blinker to make sure I have the brain capacity to do this in the next few hours hopefully
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Post by johnjacobjingleheimerschmidt on Feb 7, 2005 23:04:31 GMT -5
yay! dude, i hope this works out for you
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