I'm interested in making my own e grip/trigger.

I'm an electronics student, and pretty confident that I'm capable of the electronics side of it.


However despite that, I'd still like to make a really simple one. I don't see the need for the rather large board included in £100 kits.


I'm thinking of maybe just having one firing mode, and mechanical redundancy - I don't fancy a dead battery making me a dead player. But I may up that to auto, three round, mech semi.

I'd like to make it small enough that down the road my wallet could fit a RT in there too, so the mech would be whatever I want to do with the RT as opposed to just semi.


I'm going to have a play with some circuits now - please chip in with any thoughts or advice - particularly if you have a good reason why I won't be able to make it very small or dispense of the WAS/APE-like large board.

good luck with that


also ????

??

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Lol, you're saying impossible?

I'm not saying I can definitely do it - so if you have well founded reasons, please, share - and save me some effort!


If I could make it smaller than OEM e grips, there may be room for a RT inside the grip as well. That way when the e egrip was off (or dead battery) it would return to the RT.

Okay, here's the sort of thing I'm thinking of:



Obviously the resistor/capacitor values will need to be changed with experimentation - but I included a trimpot to make adjustments easy when (if) made.


I'm having a think now about how a three round burst mode would best be incorporated - flip-flops might be the easiest solution.

Any thoughts or reasons why you think it won't work out (or well) - let me know

no im just saying good luck
because i would assume those guys that have built the was board or the ape boad tried to make it smaller but i would also have to assume thats the smallest they could with out loseing out on something.....
but like i said this is all assumptions and if you can do it all the power to you.

and i dont think you can incorprate the R/T in there with the egrip board
have you seen those things they take up ALOT of room in the grip
also you would need to make the air hose for the R/T smaller and move it out of the way for the egrip piston to hit the sear...........long story short flash your egrip board and get it programmed to have a similar R/T setting

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Oh I will undeniably lose features from the OEM boards.

I'm not trying to make a smaller clone, I'm aiming to make a simplified version, that as such can be smaller - as above.

I hadn't thought about the hose for the RT - and also I suppose the armature pin would also have its way blocked by the RT...

ya mergring them together with how they are constructed now
will not work but nothing impossible just gotta figure out a way to do it and im not the person to help you there lol
so like i said good luck i will be watchin

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Hmm, I just designed the PCB, and made a cardboard mock up for size.

It fits OK in the marker (and leaves enough room for RT - but I confirmed that the armature link/pin then wouldn't have a route through) however I suspect that the added depth from the components would get in the way, making it too big for the groove.


With lots of wangling, I could probably line them up with the gaps - but it would take so much trial and error that I'm not sure it would be worthwhile.

Wouldn't be an issue of course if I was an OEM like Tippmann or APE, with access to a SMD machine and multi-layer PCBs - but I can't afford that. Even if I sent off my final design to be made for me, it would end up barely (if) cheaper than buying a Tippmann e grip.

Ah well, it would have been nice if it'd worked (or if I had the money to do it properly) - but I now think I'd rather spend the money and get a known working OEM e grip kit than spend fractionally less on my own design and run the risk of it not working.


The only way I can see to progress with the equipment I do have available would be to ditch the PP3 battery, and use a coin cell instead. But if I do that it would be purely for experiment and interest - I don't foresee a coin cell as lasting very long!



Thanks for the reality check

ya pretty much would be cool as hell to see if you could do it
but like i said im sure the big companys with the $$$ havnt done anything like it then im sure its kinda impractical
and im not sure about the coin batteriy but i assume they are for small things like watches...etc

but ya your welcome and ya it would be a hella alot cheaper to go buy a premade one
or hey try and make just a egrip baord your self and test it out
for sh*** and giggles

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Yeah, coin cells are designed for watches etc. but I just figured it would save so much room that it would be easy to fit in.

Still wouldn't be able to get an RT in there though - I don't do material/mech engineering stuff...