russ_hensel
- Joined Jan 11, 2009
- 825
If the motor is driven by a transistor you might be able to run it ( the motor ) on a single battery with a smaller battery for the 555, say use a c cell for the motor and in series with it a AA or AAA to get the voltage to run the 555.
But why not get a 5 volt wall wart power supply and run the whole thing off of 5 volts. A second 555 timer would let you use pwm to control the speed of the fan, or maybe with good speed control you would let it run all the time.
But why not get a 5 volt wall wart power supply and run the whole thing off of 5 volts. A second 555 timer would let you use pwm to control the speed of the fan, or maybe with good speed control you would let it run all the time.