I'm wondering if someone can point me towards schematics that might work for part (or all) of my project.
I need an 8 to 32 volt dc motor to switch directions (open and close a shutter/"trapdoor"-type light blocking thing) when a loud noise (vacuum pump) is switched on or off.
The vacuum pump is wired to a count down light switch. It is turned on manually and automatically shuts
off after 20 or 30 minutes.
I'm guessing I'd use a little 1/4 inch mic element or one of those flat piezo discs taped to the vacuum to trigger the motor, 2 whisker micro limit switches to stop the motor when the shutter is fully opened or closed and a few transistors.
Thanks in advance.
Roger
I need an 8 to 32 volt dc motor to switch directions (open and close a shutter/"trapdoor"-type light blocking thing) when a loud noise (vacuum pump) is switched on or off.
The vacuum pump is wired to a count down light switch. It is turned on manually and automatically shuts
off after 20 or 30 minutes.
I'm guessing I'd use a little 1/4 inch mic element or one of those flat piezo discs taped to the vacuum to trigger the motor, 2 whisker micro limit switches to stop the motor when the shutter is fully opened or closed and a few transistors.
Thanks in advance.
Roger