Hi guys and girls,
My brother just got a baby girl, and I was thinking of making a teddy bear that can be pressed in various areas to play sounds that I would have pre-recorded. I live very far away from my niece, so this could be a way for her to hear my voice until I meet her hopefully sooner than later.
I was thinking I could use an Arduino with a Wave Shield. This one actually: Audio Shield for Arduino That way I can store the music on a SD card. People could change the card and put in their own stuff if they want.
What kind of sensors should I use to detect when the toy is being pressed?
These folks use plain tactile pushbuttons...
But it does not seem like they would work that well.
hehe cute project. Like pauly says, force resistor would probably be a good one, though it might be a little small/take too much force for the baby to activate if you dont set its circuit right.
If your fine with going on the ghetto a bit and building your own buttons. this guide
might actually be pretty good. the buttons would be soft enough that a very young baby could definitely trigger them (just depends on how thick/thin the cloth you put between is). And you could easily customize the size of them as you need. Biggest problem I can see with making a button like this guy did though is that after a while if used a lot, the button would breka down (though ones in kids toys break like nothing anyways). Next i could see that the button might be pressed, but stay stuck down.
Thanks for the tips guys. I'm checking out your ideas.
I also thought of using a flex sensor somehow. Perhaps I could put it through the body so when the toy is deformed it triggers the sound. 404 ERROR
Another idea I just had was to place a light sensor under the arm pit in such a way that a resting bear would cover the sensor, but when the arm is raised light would trigger it.
Flex sensors could also work.
One word of caution. I almost started a project like this but droppped it due to babies putting everything in their mouth and it had lots of small parts.
I suppose the baby could use it only when "supervised".
That's a good point Pauly! I have to study baby toy history.