# Circuit Delay Timer

**URL:** <https://community.sparkfun.com/t/circuit-delay-timer/39102>\
**Category:** Projects\
**Created:** [March 5, 2020, 7:13pm UTC](https://community.sparkfun.com/t/circuit-delay-timer/39102 "2020-03-05T19:13:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![New2Electronics12345](https://avatars.discourse-cdn.com/v4/letter/n/a87d85/32.png) [@New2Electronics12345](https://community.sparkfun.com/u/New2Electronics12345)\
**Post date:** [March 5, 2020, 7:13pm UTC](https://community.sparkfun.com/t/circuit-delay-timer/39102/1 "2020-03-05T19:13:46Z")

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Hello,

I’m extremely new to electronics and trying to build a toy for my cat to periodically release pingpong balls while I’m away at work. I recently made the demo circuit shown below, and I am trying to add a delay timer so the servo will run for a set (but adjustable) time range (0.25 - 5 second servo operating time), then turn the servo off for a set (but adjustable) time range (1-30 minute servo “off” time).

Here is the link to the demo circuit I assembled (The “Getting Started Quickly” circuit):

[tutorials/continuous-rotation-servo-tri … okup-guide](https://learn.sparkfun.com/tutorials/continuous-rotation-servo-trigger-hookup-guide)

As mentioned, I’m brand new to electronics as a hobby and I am trying to avoid coding for this initial project as I get my feet wet. I purchased the SparkFun Nano Power Timer ( [https://www.sparkfun.com/products/15353](https://www.sparkfun.com/products/15353) ), but (a) I am not sure if that is right part for my intended application, and (b) if it is the right part, I am not sure how to insert the nano power timer into the completed circuit referenced above.

Does anyone have any recommendations for additional parts/circuit build guides that I could purchase/reference to complete the remainder of this project without coding?

Thank you!

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**Author:** ![MMK4243](https://avatars.discourse-cdn.com/v4/letter/m/ac8455/32.png) [@MMK4243](https://community.sparkfun.com/u/MMK4243)\
**Post date:** [April 8, 2020, 8:55pm UTC](https://community.sparkfun.com/t/circuit-delay-timer/39102/2 "2020-04-08T20:55:48Z")

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Use a 555 timer. Look for a circuit with interdependently adjustable on/off times. Search images on google – an astable circuit is what you need. a couple capacitors and trim pots and that’s it.

search 555 astable and the other criteria \< dollar

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**Author:** ![TS-Chris](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-chris/32/6057_2.png) [@TS-Chris](https://community.sparkfun.com/u/TS-Chris)\
**Post date:** [April 8, 2020, 10:12pm UTC](https://community.sparkfun.com/t/circuit-delay-timer/39102/3 "2020-04-08T22:12:02Z")

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Please do not double post.