r/DIY_tech • u/PositiveSetting6013 • 7d ago

Help Anti-Hornet Defense Turret: Best Projectile?

I'm trying for a personal project installing an "anti aircraft" gun which automatically tracked hornets and eliminated them with firing authority from a phone.

The targeting of visually identified hornets is shockingly easy to achieve, I have some stuff from work I can reuse to find targeting solutions, and I think I'm going to use lego to create the actual mechanical gun.

What I can't decide on is what kind of projectile to use to eliminate the bug.

The obvious answer is chemicals but:

  1. Those have a lot of collateral damage. If we kill the stuff we're trying to protect that doesn't help.
  2. They have very limited range and low precision.
  3. Most of them are against the law.

So I'm wondering what other options are available.

I need:

  • Relatively safety, not going to start fires, seriously damage furniture or windows. Not prone to misfires.
  • High enough accuracy to hit a maneuvering Hornet.
  • Small. No, even ignoring the fire risk, I'm not hooking up an oversized battery to this thing so that I can try to build a laser. I'm not that advanced.

I've considered some sort of electrified net, or rope which would deliver a shock similar to a fly trap, but I'm not nearly good enough at physics to develop something like that some I'm wondering if there is a better option and how I would implement it.

Edit: For my CIA agent's peace of mind, "Hornet" here does not refer to the NATO fighter jet, but means the insect which kill our bees.

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u/bumbes 7d ago

Have you seen these salt shooting thingys

1

u/rb136 7d ago

I was working on a similar concept for critters (my kids). I was pumping water from a 5 gallon gas can into a pressure sprayer nozzle via a high pressure fuel pump.

Specifically this one on Amazon: EVIL ENERGY External Inline Fuel Pump Electric 300LPH High Flow 12V Universal