I know nothing about electronics I like to be use a TTP223 touch sensor to spin a lightweight 3-inch diameter x 11.5 -inch-long roller tube for 0.75 seconds then stop. The Electric DC motor should not rotate until it is powered. The spin rate should be fast enough to throw a rat’s off balance. (I am making a rat trap) It should run on 4 D size batteries in series which produce 6 volts. Since it runs on batteries ideally when nothing is detected by the only electrical draw is from the TTP223 touch sensor. I suppose the timing could be a 555 CMOS timer but it could be any other design. Can somebody produce a simple circuit diagram to make such a device and the electronic parts needed?

 

Is this for a school project of some kind?

 

It's for my own use. You know your backyard lawn has too many Chipmunks when it's filled with holes like exploded land mines and their running all over the place. My plan is to mount the contraption I mentioned on top of a 5 Gallon bucket. Put a cover over the bucket and dangle the bait along with the sensor from the cover. -- Of course I'll make sure the electronics are waterproof.

 

It doesn't need to be electric - a free spinning roller will do the job.

Available on amazon

 

Set TP223 to be active Low (TOG=0, AHLB=1). This circuit drains nothing when inactive, except TP223.

 

How long does the motor stays on with this circuit?

 

How long does the motor stays on with this circuit?

Tau=RC=100k*10u=1sec