Instructables

Infrared Detector

Hello Everyone 
I'm making a coil gun and not sure how to make a infrared detector, so when my projectile is going down the barrel an infreared sensor will detect the projectile and activate the next coil.
Thanks Everyone 

jackopiny (author) 3 months ago
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So you want instructions on how to time the firing sequence in order to build a probably leathal weapon?

As I have no problems finding IR diodes and receivers or the corresponding shematics for them I assume you can do the same.

Sorry but I am not helping to build something that is able to kill another person.

jackopiny (author)  Downunder35m3 months ago

I see what you mean, but its not actually going to shoot anything all i need is a metal rod to press against an object and as my object moves back it presses it back even more

Use a linear actuator and a pressure sensor and you can even preset the level of pressure.

jackopiny (author)  Downunder35m3 months ago

that's perfect, cheers Mate

You're welcome!

jackopiny (author)  Downunder35m3 months ago

that's perfect, cheers Mate

jackopiny (author)  Downunder35m3 months ago

that's perfect, cheers Mate

Downunder35m4 months ago

Why a detector?

The speeds you need to fire accuratly would need a high speed processor so the timing is not messed up.

Also when waiting for a signal to activate the next coil you will loose too much time, especially to the end of the barrel.

Have you considered a design like the nono-rail-trains?

You don't really ned to fire the coils one after the other, a contious field like in the train should be easier to realize.

In that case you can use the feedback that is generated by firing the first coil to activate the second.

E.g.: First coil activated and there will be a certain voltage induced into the second coil.

This voltage will raise while the projectile travels, when it enters the second coil it should maximize - this signal is used to turn off the first coil and fire the second.

Same store for the next coil packs.

Only thing you need is the right electronics and a fast processor.