17:41:16 Wed
Oct 5 2011
| Re: EBOS first step to full auto |
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s_berri 21:33:44 Sat Jul 30 2011 |
I'm out of time for now, but once I figure out the logic board schematic I'll post my findings. Then it's on to looking at the code itself that has been loaded onto the EPROM. Until then............... Scott |
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vincent228 02:43:54 Mon Aug 1 2011 |
I will follow this post religously. I have been searching and searching for this exact info. work on electric forklifts, so i am not new to electronics, but this gun has me stumped on where to even start. its nice to know, someone else is out there looking at the same thing. Rob. |
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netstamp 05:12:08 Fri Sep 23 2011 |
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SONYtec 17:41:16 Wed Oct 5 2011 |
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camracer 18:14:50 Sun Mar 25 2012 |
Any news out there about full auto mods? Rate of fire? Any new Youtube videos?? ---Cam |
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DUBB 02:43:19 Thu Jul 26 2012 |
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camracer 10:22:14 Thu Jul 26 2012 |
Sergey's board would make it work..... just no room inside for it. ---Cam |
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camracer 23:25:15 Mon Jul 30 2012 |
---Cam |
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Shootureyeout 23:53:14 Wed Aug 15 2012 |
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Shootureyeout 23:58:17 Wed Aug 15 2012 |
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camracer 10:45:45 Thu Aug 16 2012 |
You are right. The EBOS is motor cycled. I talked to Sergey and sent him detailed photos of the inner workings and the circuit board. He seems to think it would not be difficult to re-program the chip to make it fully automatic. Sergey is not interested in modding/supplying a new circuit board at this time, so anyone with electronic skills wanna try a re-program??? ---Cam |
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camracer 10:50:47 Thu Aug 16 2012 |
Thanks much for the warnings! I had been using 1200 psi through mine without any problems (yet). But I also don't shoot it often. A real bummer that parts are soo hard to get for some of these newer guns!! I've had the same problem with ASG. Bastards won't even talk to a consumer... ---Cam |
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Shootureyeout 00:18:55 Wed Aug 22 2012 |
I took another look into the mechanics of the ebos, I just don't see the potential. I think it's ok for a backyard plinker, but my thoughts are we already have sergey and the electronics platform. we need a mechanical platform. A closed breech like a wheel cylinder that can handle the pressures and conserve air. The cylinder can have magnetic rods in them so as the cylinder rotates it can pick up the bb's from the bottom and valve shoots them out from the top. a simple motor to rotate the wheel. and notches on the cylinder to fire the valve. so really the trigger turns the wheel and the notches on cylinder fire the valve. probably never achieve a high rate of fire with this idea but a closed breech will allow high pressure and conserve air. I think the coolest thing is to have a gun that can fire at 1600 psi and give you 300 shots or more from a 13ci tank. so much air is wasted in the drozd going down the mag. I came up with the idea only from looking at the weakest part of the gun( air loss) if you have a wheel cylinder you can close that up and get the power and conserve air. maybe you could have the gun fire pellets also. let's say the cylinder has 12 round capacity. you could manually put 12 pellets in and fire them at a chosen pressure for long range varmit control then switch back to bb and lower pressure for fun shooting. a simple side loading for pellets and the idea is to have 2 guns a drozd for accuracy and a drozd for plinking on a platform that can handle pressure. I know its a far away from the blackbird design but it could be done using the basics of the blackbirds frame. |
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camracer 10:47:30 Wed Aug 22 2012 |
Your idea about the cylinder feed system has been thought of before. I can't remember who also had the idea here. Tbkahuna I think had some thoughts on this. I would love to see a project like this come to light here! Check this out, (If you haven't already) http://www.xcalibertactical.com/products/m134a2/index.html ---Cam |
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Shootureyeout 20:36:02 Thu Aug 23 2012 |
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Shootureyeout 20:37:53 Thu Aug 23 2012 |
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camracer 10:31:20 Fri Aug 24 2012 |
I have gotten rid or CO2. 1150psi HPA is going into my EBOS. No problems, but I haven't shot it much lately. It is a very noticeable improvement in power. I don't know anything about "regulated from the valve". If it is somehow, that can be fixed. The action is motor driven, not solenoid driven. I am thinking that a harder "valve strike" could be done by simply upping the voltage. I just don't know how much voltage the circuit board would take... Sergey thinks that the circuit board could be modded. Maybe inputting new programming to the "eprom". He said it will erase the stored programming to re-write it. (Who cares!) Unfortunately Sergey is not interested in working on a new circuit board at this time. ---Cam |
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radical 02:34:42 Tue Aug 28 2012 |
/air feed source bottle. |
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camracer 10:33:43 Tue Aug 28 2012 |
How do you want to carry/mount the bottle, ....what size are you looking at. ---Cam |
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radical 16:44:06 Tue Aug 28 2012 |
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camracer 23:19:38 Tue Aug 28 2012 |
Bummer you don't have a scuba shop/paintball arena 8 minutes away like me! ....Oh well.
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radical 04:48:35 Wed Aug 29 2012 |
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camracer 23:23:28 Wed Aug 29 2012 |
...Need to move back to the coast. PLENTY of "air" here!!  ---Cam |
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radical 02:29:38 Fri Aug 31 2012 |
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motrdyd 05:28:36 Fri Sep 14 2012 |
My buddy just gave me a ebos and the boards look just like a paint ball gun board I'm gona mess up mine and will let u know I have a older bob long intimidator board and if that's the case u can program it with one of those adrino kits from the shack I just got the gun yesterday so I will post more I've programmed my quadcopter boards with the adrino stuff and there's free code all over the net if u just Wana see what it looks like But I could be wrong so don't trust me LOL |
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camracer 10:28:54 Fri Sep 14 2012 |
Sergey believes the EBOS board to be reprogrammable also. He said that it will erase the original programming when you write the new, ....but who cares!! ---Cam |
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radical 22:24:53 Fri Sep 14 2012 |
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camracer 23:08:27 Fri Sep 14 2012 |
Mmnn Hmmn!! Yep! |
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motrdyd 02:11:18 Sun Sep 23 2012 |
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camracer 13:14:15 Sun Sep 23 2012 |
I'll have to ponder the idea for a while. |
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camracer 10:40:58 Mon Oct 22 2012 |
Photo #1  Photo #2  Photo #3 
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camracer 10:44:05 Mon Oct 22 2012 |
 Photo #5  Photo #6 
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camracer 10:48:24 Mon Oct 22 2012 |
 Photo #8  Photo #9  I have more photos if needed. Pretty simple electronics! ---Cam |
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Gunner2 17:29:47 Sat Oct 27 2012 |
Thanks for the excellent pictures. Yeah, the board is straight forward. two outputs driving the motors, the two selectors can be replaced by pushbuttons , and a display . i see a photo-interrupter(PH1) at one end , near the 5volts regulator . that is for counting the revs one of the motors. l presume the smaller one . |
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Gunner2 00:24:51 Sun Oct 28 2012 |
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camracer 23:46:05 Sun Oct 28 2012 |
There is no "pressure control" from the small motor. ---Cam |
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Gunner2 21:17:44 Sun Nov 4 2012 |
When firing , how does the large motor run ? incrementally or continuous ? same question for the small one. thanks. |
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camracer 11:32:16 Mon Nov 5 2012 |
The large motor runs incrementally. The small one also, but I am not certain what it's function is. Maybe a timing "sensor" of sorts?? ---Cam |
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camracer 17:41:03 Wed Jan 2 2013 |
---Cam |
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Gunner2 23:15:07 Wed Jan 23 2013 |
You wicked son of a gun. The box was unusually heavy for only a board and two motors. Thanks, i owe you a lot! Now , first the analyzing, and notes start. then the circuit and best way to achieve our goal. I shall post on this time to time. Can you please re-up those pics. sounds crazy, but surely helps. Regards, Gunner2
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camracer 15:35:55 Thu Jan 24 2013 |
Glad you got the "guts"! Re-posting photos now. ---Cam |
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Gunner2 03:43:36 Fri Jan 25 2013 |
The circuit itself is pretty simple, no problem there. But there are limitations , the way the gun is designed, and this will never bring it anywhere near to a Drozd. The ROF , may be able to push 1K , a little early to say , i can confirm in a few days. Full Auto- there are two choices. Full auto for 24 shots, or a feeder mod , like in the Drozd. Looking for ideas in this area. In the gun , there is a heavy shuttle that is driven backwards by the large motor. It has a CAM that drives a Breach loader downwards , to load a single BB! and as it reaches the end of the stroke slams open the air valve , motor is turned off, ball is sent down barrel, Spring pushes Shuttle back, another spring pushes breach upward to load next ball , helped with a nudge by the small motor. It will work with the small motor disconnected . Need to test that though. This design , i feel was made to give one that heavy recoil feeling when firing, which it does well. Tests ongoing. |
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camracer 23:34:37 Fri Jan 25 2013 |
 I agree with the "recoil" aspect. It is not an efficient system by any means like the Drozd. Making it full-auto and select fire should be able to be done. As for a choice between the two if only one can be done, then go full auto! I would think both can be done selectively, am I wrong?? It is really just a matter of building a bigger hopper to keep the bb's flowing. Lots of experience with the Drozd and it's technology here! ...adaptable? Why not! I think there will be a whole world of electronically activated firing mech's to come real soon. Look how far airguns have come in such a short period of time! This year, mark my words now, will be amazing for auto-firing airguns. No joke there! ---Cam |
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Gunner2 00:30:56 Sat Jan 26 2013 |
Guts!!The 1 to 10 and Full auto is a given, also the burst rate. The 400 round hopper is ok , have to come up with a mod to fit a feed motor somewhere , a small motor with a screw feed. |
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camracer 16:56:54 Sat Jan 26 2013 |
I'll have to work on that. |
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Gunner2 23:46:27 Sun Jan 27 2013 |
I was looking at some early posts of yours on a mag. feed motor build, Pretty neat i say. We need something on the same lines, only smaller. Also can you unplug the small motor and fire a few shots and tell me if there is any difference in performance. In my tests here it did not seem to make any. |
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camracer 14:11:00 Mon Jan 28 2013 |
What do you think the small motor does?? Is it there for a timing purpose? ---Cam |
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Gunner2 15:53:52 Mon Jan 28 2013 |
With the lever and spring attached to its shaft , there is no way it can turn, i have scoped it out and all it does is a little nudge to push the breach loader upwards as the shuttle retracts. |
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camracer 17:37:39 Tue Jan 29 2013 |
Ok G2, I gave the gun a test with the small motor disconnected. The gun does not fire without it connected. I have determined that it controls the valve cycling. ---Cam |
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Gunner2 23:03:29 Wed Jan 30 2013 |
When you say does not fire, does the shuttle attempt to move backward with a trigger pull ? When the small motor is off/ disconnected, the lever on the shaft along with the tiny spring locks the breech loader from descending, kind of a safety. Here ,in tests it works just fine, without it. the only difference is i have it out of its place. I know its a PITA, but if you could try the same, with it out of its place and disconnected and fire actual shots thru. PS, how do you post those big pics ? G2... |
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camracer 15:19:58 Thu Jan 31 2013 |
You want me to remove the "lever on the shaft and the tiny spring"? and try again? Just want to be clear. I have NO problem working with you on this! Just tell me what you need me to do anytime! I'll look at it again this morning bro! The photos we upload here, most of us use Photobucket. It is a free photo/video sharing site. All you need to do is upload your photos from your computer files to there, then there is a code to copy on PB that you paste into your reply window here. I can walk you through it when you are ready. It's really simple. Just set up a free account with them first. http://photobucket.com/ ---Cam |
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Gunner2 15:46:29 Thu Jan 31 2013 |
I would take the motor from its socket out. since sliding the plastic lever off the shaft may make it loose for further use. I do have a PB account. Shall go in there and look for the code. G2... |
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camracer 16:40:27 Thu Jan 31 2013 |
....So that small motor must have something to do with What??? I'm confused. It seems to be a "vestigial organ". Actually it MUST be there to nudge the breech block back up into position. "A helping hand". ??? I did not notice any "air shots" in any mode although.As for PB, once you have uploaded your photo there, Hover your cursor over the photo. A pop-up will open and there should be a "Share" option. Click it. Another pop-up opens click on the folder tab for "Get Link Code". Scroll down to "IMG for bulletin boards & forums" Highlight and copy the code in the box for "Full Size". Come back here and paste the code into your reply window. Now all you will see is a line of code, but when you submit your reply it will be a photo on the forum. One other helpful hint. At the bottom right corner under the reply window, there is a little square you can "check" for "Preview". If you click that square and then "Submit" your reply, you will be able to see what your reply/photo will look like before you make it public. If all looks good, just click "Submit" again. All Done! LMK if you have any issues with PB, we'll get you posting photos in no time! |
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Gunner2 17:25:51 Thu Jan 31 2013 |
And it seems to nudge it upwards when needed, though that's done by the two springs. Thanks for the how-to on posting pics. G2... |
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camracer 17:42:35 Thu Jan 31 2013 |
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Gunner2 23:54:47 Sat Feb 16 2013 |
BURST FROM 1 TO 10 , FA RPM - 300 TO 900 (OR EVEN 1K) SHAKE THOSE JOINTS LOOSE. The florescent light screwed up the display on the video. As always- Thanks Cam. Next is the mag. feed mod .  Found out ,the above link and all else with PB works well in Google Chrome. Thanks , G2 |
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camracer 14:06:05 Sun Feb 17 2013 |
How long until you have the final circuit board done? We'll have to look at the locations to put control buttons and the best spot to put the display. I'll take a look at what to do with the bb feed and pass some ideas to you. ---Cam (BTW, your video link is not working.) |
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Gunner2 23:50:03 Sun Feb 17 2013 |
One has to use the Google Chrome browser for the video to work. Don't know about other browsers. Or there is a special CODEC for the video. I have been at it on several fronts. The circuit /PCB is ready (on the PC). It is designed to be plug and play, but still needs the cutout and holes in the case. Mind if you could send up the exo-skeleton. Then I could decide the display size/location and button locations.Got some more testing to do, with the small motor in place. Then I shall update the video in natural light so the display is clearly visible. Also will add another outlet to control a feed motor for the magazine. Regards, G2 |
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camracer 14:24:51 Mon Feb 18 2013 |
---Cam |
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Gunner2 04:07:02 Tue Feb 19 2013 |
G2.. |
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DUBB 13:43:39 Tue Feb 19 2013 |
I like the breadboard prototype. How far are you from designing a final pcb for this? |
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camracer 22:10:00 Tue Feb 19 2013 |
Oh BTW, Parts are in the mail today G2! |
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Gunner2 21:58:44 Wed Feb 20 2013 |
The PCB design is all done, except need to make a selection on the display and pushbuttons and their location. Looking at a smaller display and better buttons. Not long for the board , after its testing , to be available. G2.. |
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Gunner2 02:58:31 Wed Apr 10 2013 |
Damn ! Wanted it to be a surprise. Was planning to ship one to you unannounced. I have five boards ready. Shall do the preliminary testing soon. Made the holes and cutout in the shell. G2. |
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Gunner2 03:19:16 Wed Apr 10 2013 |
  Regards, G2.... |
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camracer 21:39:44 Wed Apr 10 2013 |
Your work as usual is so "Professional"....And that's with a capital "P".....twice! Heh!!! I would like to "shoot" a video testing it out. Youtube coming soon. ---Cam ...amazing!!! Wow! |
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Gunner2 01:05:19 Fri Apr 12 2013 |
You make me blush.
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Mickael 18:24:23 Sun May 19 2013 |
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