Stopping Timer function on 555? Pin removal?

Thread Starter

Kyle954

Joined Jan 27, 2020
5
trying to stop the 3 minute timer on an ultra sonic cleaner of mine. I removed pin 4 thinking that would reset the timer but all it did was disable the OFF button. Any advice on how to completely stop the timer all together? Possibly a jumper?
 

AnalogKid

Joined Aug 1, 2013
9,492
Is the timer circuit part of a purchased product, or did you build it from scratch, or something else? What you have done so far still is not clear. Can you post a schematic of the timer circuit, or photos of the pc board?

ak
 

AlbertHall

Joined Jun 4, 2014
11,598
If you want the cleaner to run for longer than three minutes then leave pin 4 as it was and connect pin 6 to ground. This way the timed on period will never end but the off button will still work.
 
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