Hello all,
A friend of mine is interesting in building his own vibrating fishing lure. He wants to make something vaguely guppy shaped that would vibrate intermittently. Since I happen to know a little about electronics he has roped me into helping him figure out how to do it.
My initial idea is to cobble something together like the following: use the output of a 555 timer configured to produce an astable wave form, to drive a cell phone vibrator motor. My friend was thinking of encasing the entire thing in a rubber tube/casing commonly found in bait and tackle stores. I thought perhaps a pressure sensitive trigger or a hall effect sensor + magnet could be used to turn the circuit on.
My concerns is mainly about size. How can I make this circuit so that it is physically small?
- If I want the motor to turn on for 1 second and off for 3-4 seconds (or variable)...doesn't that require a physically/capactively large capacitor?
- I'm not sure about the power requirements. I think the 555 requires at least 3V and I was thinking the battery can't be much bigger than a couple of hearing aid batteries. I'm just not sure if that'll drive both the 555 timer and the motor.
Anyway, if anyone has suggestions pertinent to power or size I'd love some suggestions. Maybe the smaller form factor 555 requires less power? Suggestions for a switching mechanism? Maybe there is a simpler circuit for generating that intermittent signal I require...
Thanks!
A friend of mine is interesting in building his own vibrating fishing lure. He wants to make something vaguely guppy shaped that would vibrate intermittently. Since I happen to know a little about electronics he has roped me into helping him figure out how to do it.
My initial idea is to cobble something together like the following: use the output of a 555 timer configured to produce an astable wave form, to drive a cell phone vibrator motor. My friend was thinking of encasing the entire thing in a rubber tube/casing commonly found in bait and tackle stores. I thought perhaps a pressure sensitive trigger or a hall effect sensor + magnet could be used to turn the circuit on.
My concerns is mainly about size. How can I make this circuit so that it is physically small?
- If I want the motor to turn on for 1 second and off for 3-4 seconds (or variable)...doesn't that require a physically/capactively large capacitor?
- I'm not sure about the power requirements. I think the 555 requires at least 3V and I was thinking the battery can't be much bigger than a couple of hearing aid batteries. I'm just not sure if that'll drive both the 555 timer and the motor.
Anyway, if anyone has suggestions pertinent to power or size I'd love some suggestions. Maybe the smaller form factor 555 requires less power? Suggestions for a switching mechanism? Maybe there is a simpler circuit for generating that intermittent signal I require...
Thanks!