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Old 01-29-2012, 07:31 PM   #1 (permalink)
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Thumbs up Orthus, The Electro Double (pic heavy)

This is my latest project, a 100PSI electronic double barrel. I have to put it aside for a while to work on some other things, so I figured I'd show what I have so far.

Here is a shooting video. The script goes like this: left barrel, left barrel full auto, right barrel, right barrel full auto, both barrels simultaneous, simultaneous full auto, alternate barrels fire, and finally a heavy dose of alternate full auto.
Orthus :: clip.mp4 video by r-lad - Photobucket

The full auto is a benign 20BPS. There are no eyes yet, so I didn't attempt to crank it up and see what it would really do.
There was a ball break in the right barrel during the video. The right ball detent fell out and allowed some double feeds. There is no retainer for the (Tippmann) detents yet, so they are just held in by the press fit, which isn't much with a rubber part. The bolts have fairly low force so they usually don't chop, but of course it did with the camera running.







This one shows the circuit board, which uses a FPGA for microsecond timing of the firing cycle. Non-volatile RAM (FRAM) is also on board to store settings and statistics like number of shots fired, maximum BPS, etc. There are separate battery packs for the solenoids and logic. These could probably be combined, but my previous double had such current hogging solenoids that they pulled down the logic supply, so I didn't risk it this time. Yes, there is still a lot of wiring to do.
Also shown are the dual Palmer Fatty's that are re-sprung for 50-150PSI range.


This is a bit fuzzy, but shows the cutout where the eye emitters will go. There will be an aluminum cover between the feed elbows eventually.


The block with the ASA will be the front grip. It can be removed after loosening one set screw.


Mega macro line to feed the beast.


What its got:
1. Just over 100PSI operating pressure to eliminate secondary regulators for solenoids.
2. Front grip mounted mode buttons for 3 round burst and full auto. Because these modes are rarely needed, the front mode button must be held down when the trigger is pulled.
3. Left, right, simultaneous, and alternate fire barrel modes.
4. Serial interface to PC or hand held terminal.
5. Field legal mode. This locks out any modes that can fire more than one ball per trigger pull, if the field requires it.

What it needs:
1. Fiberglass over foam stock and front grip.
2. Eyes.
3. Loader batteries relocated to stock.
4. More intelligent loader control, rather than sound activation.
5. New circuit board with Bluetooth. This will allow for setup from an Android phone. That is if I ever some across a cheap Android phone and learn how to program it. The new board will also have a PIC co-processor to monitor battery voltage and handle communication.
6. Barrel mode selection switch somewhere on the stock.
7. Rate capped full auto (maybe 8-10BPS) , in addition to the existing firing modes.
8. Operating pressure lowered to exactly 100PSI at 300FPS so there is more adjustment headroom (solenoids are 120PSI max.).
9. A bunch of small parts like eye cover and rear ASA for remote line.
10. A lot of fine tuning.
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Old 01-29-2012, 07:32 PM   #2 (permalink)
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Reserved for finished pics.
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Old 01-29-2012, 07:39 PM   #3 (permalink)
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Wow, that is pretty awesome. Thanks for sharing!
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Old 01-29-2012, 09:39 PM   #4 (permalink)
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What a beast!
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Old 01-29-2012, 10:04 PM   #5 (permalink)
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Yep, like Titus said, thanks for sharing. That's a fantastic project! I love seeing guns like these. Total unabashed creativity. Serious props!


You got one "holy ****" and an "oh my god" from me, and an "I'm pretty sure that would hurt...alot." from my roommate.
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Old 01-29-2012, 10:39 PM   #6 (permalink)
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Fun! Will the PIC be an additional processor, or a replacement?

What kind of action and valves does it use?

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I guess additional "co-processor". Are you building the boards?
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Old 01-29-2012, 10:42 PM   #7 (permalink)
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Holy freaking awesomesauce Batman! Id like to see how you designed the flow in the body if that's available.
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Old 01-29-2012, 11:13 PM   #8 (permalink)
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Old 01-29-2012, 11:31 PM   #9 (permalink)
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Damn neat..it has a wiring harness bigger than a harley... wild!
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Old 01-29-2012, 11:33 PM   #10 (permalink)
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Next up, it needs a water cooling system for the CPU
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