Using electronics to remotely pull a trigger?

Discussion in 'General Electronics Chat' started by brucester, Nov 3, 2013.

  1. brucester

    Thread Starter New Member

    Dec 24, 2012

    I need to find a way to pull a trigger on a speargun remotely.

    The trigger is quite stiff and needs a fair squeeze to shoot it.

    I want to be able to pusha button on a boat and trigger the gun 20m down.

    Cant think of a device that would achieve this.

    Any advice?
  2. Sodar

    New Member

    Jul 18, 2010
    I've seen some pretty beefy solenoids that would probably work.
    Maybe something like a DC Waterproof linear actuator?
  3. GetDeviceInfo

    Senior Member

    Jun 7, 2009
    I'd consider a miniature air valve, actuator, and a compressed CO2 cartridge, at the trigger.
  4. Danm1


    Jul 19, 2010
    There are a few problems I'm sure you know you will need to over come. The solenoid apparatus will need to be waterproof at 20m, which is no simple task.

    The RCP2W-SA16C Waterproof Electric Actuator is something that might work if you put it in a plastic bag, which would probably work a 5M, but that might not be good enough at 20m.

    Are you watching on a camera on while you sit in a boat?

    If you need to scuba dive to set this thing up, then why not just get a normal spear gun and use it as you dive? If you just throw the whole setup over the side of the boat, it will probably land on it's side or upside down.
    Are you trying to spear some unusually timid fish?
  5. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    ..... and make sure it's not aimed at the boat when you trigger it :D.
  6. strantor

    AAC Fanatic!

    Oct 3, 2010
    Why does a solenoid need to be water proof? Insulate the wire terminations (especially in salt water) and it should work, at least for the first few occasions you use it.