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  Air storage and release manifold

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  Canon Gimbal - side view

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  Canon Gimbal - top view

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  Solenoid valve manifold

Components:

Cannon:

Re-purposed schrader valve interface to bike pump for pressurization Large PVC pressure vessel for air storage, rated to 20 PSI (plenty for such a large air volume) Two high-flow brass solenoid valves: one to a small auxiliary tank that allows for repeated firings, and the second to fire the cannon itself. Interchangeable cannon barrels supporting Dots and Peanut M&Ms

Gimbal:

2-axis stepper-motor aiming system supporting the cannon barrel Laser cut acrylic design facilitating direct pan drive and linear tilt drive

Electronics and software:

Nvidia Jetson running OpenCV for face tracking, distance reckoning and active estimation of positional error Arduino with stepper drivers for interfacing with gimbal and solenoid valves