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Sentry water gun (lidar tracking!)

This high tech water gun will track persons with the lidar sensor and fire several shots of water

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Engineering is not always about solving world problems. Engineering is also about having fun, this is especially important for getting younger people enthiasastic about technical education. In Europe it's becoming more and more dramatic to find the right skilled technical people.

This high tech water gun will track persons with the lidar sensor and fire several shots of water
The idea is to build something that's relatively easy to replicate, therefore the project is constructed as much as possible with standard available components. So anyone interested can just get the parts and start replicating. The construction is made of 125mm PVC drainage pipes and aluminium extrusion profiles. Mainly 3D printer parts are used, like steppers, Minitronics V2.0, belts and axis.

What is it?

Its just an advanced toy :)
The gun will detect targets if it will appear closer than configured threshold. If the target moves away from the gun, the gun will be moved upward so that water will likely hit at greater distance. If the gun has reached the XY position of the target, the 4 water valves will be acivated one by one, only one valve will be active each time. This will give a nice effect.

What features does it have?

  • 180° viewing angle, 12 meter range lidar sensor
  • 4-way water valve with nozzles having around 10 meter range
  • The steppers are controlled by Arduino AccelSteppper library to increase, decrease smoothly and prevent mechanical stress as much as possible
  • It looks frightening

The electric diagram:

More details will follow soon!

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