Dual micro switch circuit that resets when one is released.

[Badger906]

Ok terrible title, hard to shorten lol.

I need a circuit for an Airsoft gun that nobody makes!

Basically the way an Airsoft gun fires by semi auto is that when you pull the trigger the contacts close and send power. The gearbox does 1 rotation and a cam on one of the gears hits a lever that disconnects the contacts. When you release the trigger it drops back to its original position and then you can pull it again.

 

Now I want a remote trigger. That obviously cannot interact with the cut off lever as its not in the same location. So I plan to use 2 micro switches. 1 at the trigger point. That closes when the trigger is pulled. And another that is always closed until the cut off lever opens it for a brief second on its rotation. 

Now that's all simple enough. However. As soon as the lever stops acting upon the switch the circuit will go live again if the trigger is still held. And this in where lies my issues. 

I want the circuit to only reset and become live again (despite the second switch now closing) only when the trigger switch is released and pressed again. 

So I need some kind of current sense/logic switch to detect this. And this is where my knowledge runs out. So any input and help would be amazing. 

 

TLDR: 2 switch circuit, one always closed only opens for brief second. Second switch activates circuit. Need circuit to remain off until 1st switch is released and pressed again. 

 

 

[Sauron]

This behavior could be easily programmed into an arduino board if you can't find a pure hardware solution.

[Badger906]

1 minute ago, Sauron said:

This behavior could be easily programmed into an arduino board if you can't find a pure hardware solution.

Pretend I'm an idiot lol and explain of possible what is need. I know what Arduino boards are. But I also know there's a million and one modules and thingies that connect to them. 

I know pcs and car mechanics. Not this electronic gibberish

[Arrogath]

Relay logic wise I can sort of see what you want, I feel like drawing this out as ladder logic would help, not sure if you’re familiar 

[Badger906]

Just now, Arrogath said:

Relay logic wise I can sort of see what you want, I feel like drawing this out as ladder logic would help, not sure if you’re familiar 

Afraid not. My electronics knowledge goes as far as 1980s and earlier cars..! So simple and basic!

[Sauron]

10 minutes ago, Badger906 said:

I know what Arduino boards are. But I also know there's a million and one modules and thingies that connect to them. 

No need for extra modules, the basic outputs on an arduino nano board should be enough for what you need. There are many guides you can find that convey a lot more than I could in a forum post.

[kelvinhall05]

Would be overly complex trying to use a logic-based solution, and seeing as you need an Arduino or similar for the whole remote trigger part, I'd just use that.

[Badger906]

23 minutes ago, kelvinhall05 said:

Would be overly complex trying to use a logic-based solution, and seeing as you need an Arduino or similar for the whole remote trigger part, I'd just use that.

Well by remote I meant further down the gun. It's a bullpop! Not as in remote firing 

[kelvinhall05]

1 hour ago, Badger906 said:

Well by remote I meant further down the gun. It's a bullpop! Not as in remote firing 

I see.

 

I'm not quite sure I understand your explanation of what you want it to do. Can you maybe draw a diagram and/or write a truth table?