Thanks Matt, as the thread was progressing it was unclear to me.

Knowing that makes a BIG difference to the people responding to your thread.

You have been given three solutions and there are more.

Max and Gopher's solution with the 555 timer is a hybrid solution. Using analog and digital techniques.
If you want to get your feet wet, I would recommend this. Low cost, but some study time.

Mike's solution is digital and will give you absolute, adjustable control. It's low cost too, but along with electronic study, it will require some programming. If you want to go full bore on this stuff, Mike can make it seem easy. That's probably because he's already done everything wrong. At least that's the only way things get easy for me.

Colin's solution is analog, simple, fast and very cheap. You should be able to get all parts you don't have with a few minutes drive. This should have the advantage with battery power. But like everything else, if you want to know how it works, it will take some study also.

Good luck with your project.

 

"
A 555 is an absurd suggestion.
This problem has already been solved. Get on with something else.

And a happy new year to you to!
Max.

 

You are right. There was power to the transistor for 1 second but no power to the motor. Error has been corrected.

Just a suggestion - there are a few car interior light delay circuits on the net.

One of those is probably a ready made solution for the TS, the only modification is reduce the timing capacitor.

 

The 555 can be simplified:

 

Thanks Colin. The simpler the better!

 

The 555 circuit is a stupid design.
1. It does not slow the motor.
2. It flattens the battery.

 

The 555 can be simplified:
View attachment 97694

@Colin55

I simulated your 555 circuit. It seems to glitch if the motor is turned on/off too soon after the motor stops. Glitch, in this case, means that the motor does not continue to run after the switch is thrown - it just stops immediately.

cheers.

@Matt D. (FYI).

 

"the motor does not continue to run after the switch is thrown - it just stops immediately."
How would you know ???????