I'm planning to add a siren to a 1/32 slot car.
It runs on up to 14 volts (depending on throttle level)
I was thinking if the siren could just rise and fall as the voltage to the car
fluctuates, that would be fairly simple.
I found a circuit to use:
http://electroschematics.com/935/simple-siren/
And I'm wondering if it will work to just short S1 (the push button switch),
or do I need a transistor circuit that senses when voltage is applied and emulaties a finger pushing the momentary switch?
If so, how would the additional schematic elements look?
I do intend to just breadboard the circuit and see if shorting S1 and fluctuating the supply voltage give a result close to what I am looking for... but my breadboard is in storage at our old house, and we won't be going there for a week or two (until the current tenant moves out and we are there to prepare for the new renter).
So, I figured I'd ask, and see what I might expect &/or how to build a "pushbutton emulator".
I'd like to keep it small and light - the car has limited space in it.
Thanks!
It runs on up to 14 volts (depending on throttle level)
I was thinking if the siren could just rise and fall as the voltage to the car
fluctuates, that would be fairly simple.
I found a circuit to use:
http://electroschematics.com/935/simple-siren/
And I'm wondering if it will work to just short S1 (the push button switch),
or do I need a transistor circuit that senses when voltage is applied and emulaties a finger pushing the momentary switch?
If so, how would the additional schematic elements look?
I do intend to just breadboard the circuit and see if shorting S1 and fluctuating the supply voltage give a result close to what I am looking for... but my breadboard is in storage at our old house, and we won't be going there for a week or two (until the current tenant moves out and we are there to prepare for the new renter).
So, I figured I'd ask, and see what I might expect &/or how to build a "pushbutton emulator".
I'd like to keep it small and light - the car has limited space in it.
Thanks!