Connect with us

12v variable 555 timer circuit with motor

Discussion in 'Sensors and Actuators' started by Harrison Redwood, Apr 5, 2016.

Scroll to continue with content
  1. Harrison Redwood

    Harrison Redwood

    1
    0
    Apr 5, 2016
    I'm trying to make a variable timer circuit that is controlled by a 555 IC running from a 12v supply. I have a basic circuit but for some reason as soon as the circuit is turned on the motor starts spinning and doesn't stop until the power is cut, its like the potentiometer doesn't do anything.
    555.jpg
    help would be much appreciated, cheers.
     
  2. Bluejets

    Bluejets

    4,055
    847
    Oct 5, 2014
    You have threshold and discharge shorted (6 and 7)
     
  3. cjdelphi

    cjdelphi

    1,096
    104
    Oct 26, 2011
    The second issue is the 1M resistor with only a 10k potentiometer , that's going to be a very slow pulse with 220uf it might not even trigger the 555
     
    Bluejets likes this.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-