With the help of his Dad, Henry has launched a successful Kickstarter campaign to fund the purchase of a 3D printer. Check out these videos that they created for this effort that show the Annoyinator in action.
The following is a somewhat paraphrased conversation between Henry (age 12) and Dad (age, uh, somewhere north of 40) on the way home from Thanksgiving…
Henry: Hey Dad, can you make a loudspeaker that aims only in one direction?
Dad: Well, sort of. Because of the way sound works, you need a very wide loudspeaker to make it directional and ‘point’ in some direction. For a reasonable size loudspeaker, you can make it very directional only at high frequencies.
Henry: Awesome. Can I make something that attaches to my iPod Touch and aims the sound from the ‘Dog Whistle’ app?
Dad: Yes, you can do that.
Henry: That’s what I want to make!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — How Authority and Decision-Making Differ Across Cultures
Wearables — Perform operation
Electronics — Soldering Pointer!
Biohacking — Stretchable EEG Temporary Tattoos
No comments yet.
Sorry, the comment form is closed at this time.