Cork Cannon

An excellent cork cannon made with a $15 irrigation system valve (24VDC); must be used only with great caution and supervision. We're working on a timer circuit using an MM74C926 counter IC in an effort to measure the velocity of a cork in the barrel.

DC Motor Controller

A DC motor controller from Futurlec providing speed and rotation direction control. A very nice product for only $20.00. I plan to use two of these for the port and starboard decent motors. The primary decent motor on the bottom will be connected directly to an on board battery via relay board also from Futurlec.

Connectors

Bulgin IP68 six terminal connector mounted on the bottom plate of the pressure chamber bulkhead. Room for three more connectors is available.

80 Watt Audio Amplifier

David built a new 80 watt audio amplifier replacing the earlier circuit that we accidentally shorted out with loud and smoky results (see earlier post). Note the large heat sink on the left and the component board on an acrylic panel as this will be incorporated into a larger acrylic pyramid housing that we've constructed. We tested the circuit with an iPod source and successfully drove a test speaker array with Ozzy at a very high volume.