How to Make Vortex Cannons

Step 6 Use it...

You should adjust the Tone Generating software to play a low-frequency saw tooth tone which will 'bump' the woofer and kick enough air to create your computer controlled smoke ring. You can also try different size holes in the tube and different tones and even music for different vortex effects! This is a fun science project and some have been made that really "kick air"! Check out this video. Hope you enjoyed this Instructable.