Simulated JAMS, by modifying a Trigger Master

DonP · April 23rd, 2008, 13:06

I've gotten simulated JAMs working on a test gun by modifying the programming in a Trigger Master, and installing a switch.

A "jam" stops the gun from firing. Instead of firing, the gun vibrates (like a cell phone) until an IA drill (tap-rack-bang) is done to clear the jam.

It's just for fun, really. I can simulate shoddy equipment or crappy ammo or dirty guns now!

opcorn:

Click for YouTube Video:

Technical bits:
- A switch installed in the M4's upper receiver detects the racking of the bolt and signals this to the Trigger Master.
- Jams are more common in full auto or burst firing modes. It's more "reliable" to shoot in semi.
- The "tap" part of the IA drill (where the magazine is tapped in) isn't actually detected.

I cheated on that part.

Further info:
- How to develop for the Trigger Master (tutorial)
- The Trigger Master Homepage

Splashx · April 23rd, 2008, 13:12

nice system! and it sounds pretty good when firing! Unlike my G3. Got helical gears?

CDN_Stalker · April 23rd, 2008, 13:12

Very cool Don, neat idea!

Lakonian · April 23rd, 2008, 13:18

It's a cool idea. I was kinda confused when I first saw this... but seems pretty cool.

Isn't the TRB drill, and IA drill completely different? I thought for IA you had to release the mag, shake your rifle, rack'er 3 times (for luck

), insert a freshy, and rack again....

AngelusNex · April 23rd, 2008, 13:20

I want one... that would add a whole other experience to the sport. To bad I'm not as good as you are with that sorta stuff or else I'd do that too.

Danke · April 23rd, 2008, 13:23

Well well well, what have we here, and airsoft gun that stops working at random? Just what I've been looking for!

What do those army guys yell in all the movies? I think it's "Career going alright, carrer stops"!

Don't mind me, I tend to ramble on.

Torque · April 23rd, 2008, 13:37

I like that, pretty cool Don

Drake · April 23rd, 2008, 13:48

Awesome work, Don! We'll have to discuss this a bit later (work's got me busy the past 2 weeks)

DonP · April 23rd, 2008, 14:17

I'm pretty sure there are different scales of IA (immediate action) drill. The quick one is just tap-rack-bang. If that doesn't work you need to do more. That's about all I know about the details though.

Quote:

Well well well, what have we here, and airsoft gun that stops working at random? Just what I've been looking for!

:P Yeah, I have to admit I'm amused by the fact that this really just a mod that stops your gun from working at random times.

PS. Regarding gears: Bone stock TM gears is all. Probably sounds cooler due to the camera picking up the sound nicely (reverb off the wall behind me, maybe?)

LyquidFyre · April 23rd, 2008, 16:46

This idea was brought up in another thread regarding the Trigger Master but would it be very hard to program it to cutoff power once you hit the end of the mag?

As Stalker said, you might be able to mount a magnetic switch in the mag well and add a small magnet to the BB follower in the mag. Once you hit the end of the mag, the follow trips the magnet and shuts off the current. Maybe install another small contact switch on the bolt-catch so you gotta hit that to reset before you can fire again? Would be an AWESOME mod if do'able.

CDN_Stalker · April 23rd, 2008, 16:51

That WOULD be awesome!

ex · April 23rd, 2008, 16:54

Just to play devils advocate here and being an electronic dunce so bear with me. My Mags rarely if ever empty out and there are usually 2-4 bb's left in the mag. Would this effect said magnetic switch?

LyquidFyre · April 23rd, 2008, 17:03

Probably would affect it. Would be a matter of positioning the switch in the right spot so the follower will definitely go by it.

Maybe there's another solution which would depend on an event which only occurs when the mag is empty. Say an optical sensor somewhere to sense if a bb is shot out of the inner barrel? When there's no bb it shuts off until it is reset via the bolt-catch. Of course this all requires wiring etc...

So what specific events happen when you run out ammo?

Sound signature changes
No bbs are expelled
No bbs are fed into hop.....This is all brainstorming.

Styrak · April 23rd, 2008, 17:13

Quote:

Originally Posted by LyquidFyre

So what specific events happen when you run out ammo?

Sound signature changes
No bbs are expelled
No bbs are fed into hop.....This is all brainstorming.

You get killed...

The Saint · April 23rd, 2008, 17:15

The typically non-functional airsoft forward assist is just begging to have a switch crammed into it for something like this.

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April 23rd, 2008, 13:06	#1
DonP Trader rating Join Date: Jul 2002 Location: Edmonton, AB	Simulated JAMS, by modifying a Trigger Master I've gotten simulated JAMs working on a test gun by modifying the programming in a Trigger Master, and installing a switch. A "jam" stops the gun from firing. Instead of firing, the gun vibrates (like a cell phone) until an IA drill (tap-rack-bang) is done to clear the jam. It's just for fun, really. I can simulate shoddy equipment or crappy ammo or dirty guns now! opcorn: Click for YouTube Video: Technical bits: - A switch installed in the M4's upper receiver detects the racking of the bolt and signals this to the Trigger Master. - Jams are more common in full auto or burst firing modes. It's more "reliable" to shoot in semi. - The "tap" part of the IA drill (where the magazine is tapped in) isn't actually detected. I cheated on that part. Further info: - How to develop for the Trigger Master (tutorial) - The Trigger Master Homepage

April 23rd, 2008, 13:12	#3
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Very cool Don, neat idea! __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

April 23rd, 2008, 13:37	#7
Torque Trader rating Join Date: Feb 2008 Location: Edmonton Alberta	I like that, pretty cool Don __________________ Team Z.E.R.O Zombie Emergency Response Operations

April 23rd, 2008, 13:12	#2
Splashx Trader rating Join Date: May 2007 Location: Near Quebec city	nice system! and it sounds pretty good when firing! Unlike my G3. Got helical gears?

April 23rd, 2008, 13:18	#4
Lakonian kos Trader rating Join Date: Feb 2006 Location: Wherever.	It's a cool idea. I was kinda confused when I first saw this... but seems pretty cool. Isn't the TRB drill, and IA drill completely different? I thought for IA you had to release the mag, shake your rifle, rack'er 3 times (for luck ), insert a freshy, and rack again....

April 23rd, 2008, 13:20	#5
AngelusNex formerly Sepulcrum Trader rating Join Date: May 2007 Location: Kingston,ON, aka Funkasia	I want one... that would add a whole other experience to the sport. To bad I'm not as good as you are with that sorta stuff or else I'd do that too.

April 23rd, 2008, 13:23	#6
Danke Prancercise Guru Trader rating Join Date: Oct 2007 Location: Danger Zone	Well well well, what have we here, and airsoft gun that stops working at random? Just what I've been looking for! What do those army guys yell in all the movies? I think it's "Career going alright, carrer stops"! Don't mind me, I tend to ramble on.

April 23rd, 2008, 13:48	#8
Drake E-01 Trader rating Join Date: Dec 2001 Location: Montreal, QC	Awesome work, Don! We'll have to discuss this a bit later (work's got me busy the past 2 weeks) __________________

April 23rd, 2008, 16:46	#10
LyquidFyre Trader rating Join Date: Nov 2005 Location: Southern Ontario/GTA	This idea was brought up in another thread regarding the Trigger Master but would it be very hard to program it to cutoff power once you hit the end of the mag? As Stalker said, you might be able to mount a magnetic switch in the mag well and add a small magnet to the BB follower in the mag. Once you hit the end of the mag, the follow trips the magnet and shuts off the current. Maybe install another small contact switch on the bolt-catch so you gotta hit that to reset before you can fire again? Would be an AWESOME mod if do'able. __________________ Various BB throwers

April 23rd, 2008, 16:51	#11
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	That WOULD be awesome! __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

April 23rd, 2008, 16:54	#12
ex Wanna buy some Nod's? #StolenValour Trader rating Join Date: Aug 2005 Location: Ottawa	Just to play devils advocate here and being an electronic dunce so bear with me. My Mags rarely if ever empty out and there are usually 2-4 bb's left in the mag. Would this effect said magnetic switch? __________________ ΜΟΛΩΝ ΛΑΒΕ

April 23rd, 2008, 17:03	#13
LyquidFyre Trader rating Join Date: Nov 2005 Location: Southern Ontario/GTA	Probably would affect it. Would be a matter of positioning the switch in the right spot so the follower will definitely go by it. Maybe there's another solution which would depend on an event which only occurs when the mag is empty. Say an optical sensor somewhere to sense if a bb is shot out of the inner barrel? When there's no bb it shuts off until it is reset via the bolt-catch. Of course this all requires wiring etc... So what specific events happen when you run out ammo? Sound signature changes No bbs are expelled No bbs are fed into hop.....This is all brainstorming. __________________ Various BB throwers

April 23rd, 2008, 17:15	#15
The Saint Trader rating Join Date: Jan 2005 Location: Quebec	The typically non-functional airsoft forward assist is just begging to have a switch crammed into it for something like this. __________________ "The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."

Simulated JAMS, by modifying a Trigger Master

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