Mechanical design I need advise

Community Projects
1

I have a project I am working on and I am lost on one small aspect…

I have a hobby dc motor that is mounted in such a way that I need it to turn a gear that is at a 90 degree angle from it. I have a few questions about how to do this. And maybe someone has a better idea.

  1. Does Sparkfun have a beveled gear? If so I cannot find it, could someone link to it?

  2. This motor has one function, to turn a gear that does nothing. It has a piece of flexible plastic that is mounted on the side of the gear that acts as a noise maker. The gear turns, each tooth of the gear would in turn strike the flexible plastic piece making a rattling noise. Yes this is by design lol. My question is, is there a better way to make a loud startling noise?

  3. Is there another way to to turn that gear? Unfortunately it sits in such a small area, putting it on its side will not work.

2

  1. worm gear?

  2. https://www.sparkfun.com/products/7950 or http://www.digikey.com/product-search/e … 67?k=piezo

  3. Maybe not, but http://www.smallparts.com.au/store/categories/ or http://www.amazon.com/s/ref=nb_sb_noss_ … vel%20gear

Good luck,

  • Chip
3

I thought about Piezo, but it is too electronic - this is being used to scare cats :slight_smile: Because cats are spawns of satan, they are impervious to electronic noises.