We've discovered that our cat (who has FIV) is deaf. He's a bit skittish and we hate to scare him when we go to wake him in the morning for breakfast, so we've tried a few things, including stomping (concrete floors. No good), banging the walls to cause vibrations (again, concrete floors, doesn't do much), blowing air at him (somewhat successful) and even throwing small items at him (e.g. tiny beads that provide enough force to gently wake him without scaring him)
I've looked online, and you can buy vibrating collars, but they're in the range of $200 AUD, which is far too expensive for our simple needs. So I thought about making one out of something like TinyDuino, but I don't know enough about electronics to do it. I'm happy to do the programming and enclosure myself, but I'm just after a tiny battery powered, bluetooth unit that I can strap to his collar in order to catch his attention so we don't scare him half to death when we walk out into the loungeroom in the morning.
Can anyone help out?