DC Timer

[Leslie]

I am looking for a miniature DC 18 volt timer with an on/off push button that will also turn to adjust a timer from 5 to 30 minutes. The push button needs to be wired to a bread board with a 4 inch wire lead.

[Dekking]

More information is needed.

The ICM7555 can probably do this but a potentiometer will be needed to adjust the delay.

A microcontroller can be used to build a more flexible timing device but will need a voltage regulator (5V or 3.3V) and an output buffer to interface with the 18V devices.

[HarryA]

If you are handy with a soldering iron you can get a push button switch with potentiometer on ebay.  for example:

https://www.ebay.com/itm/113927101102?hash=item1a86959aae:g:TyAAAOSw6ShdqKXJ&amdata=enc%3AAQAHAAAAsCTccvK8zt8P7ay7xO2JNnQVqK54hb11np%

You would need to match the potentiometer on the switch with the one on the timer board.

You  could replace the potentiometer and switch on a timer board like this perhaps:

https://www.amazon.com/Module-Adjustable-Timing-Switch-1-10sec/dp/B07SL5HBZ9/ref=sr_1_58?crid=3806JFZG2WCBO&keywords=time+delay+board&qid=1670774252&sprefix=time+delay+board%2Caps%2C129&sr=8-58

Look for one with the delay you need.