Reply to "Semaphore and 555 Timer Circuit"

rtr12OGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Breadboard I got was a Digi-Key part #438-1048-ND

Thank you stan2004, will give it a try. I thought 555 at first, then was thinking 4017, then was totally unsure as the 4017 reset pin was going to the negative side?

Ok, tried it and it works so far, if I got it right (no fire or smoke anyway). Of course it wasn't acting up when I went back to change things. Here's a revised diagram, if you see any mistakes please let me know. I had a ceramic cap that I used here, no idea where it came from, probably ebay? I just picked one from Digi-Key to add to the parts list.

Attachments

Hide

Files (2)

TinyCad Traffic Signals N-S-E-W-Rev 1.dsn

TinyCad Traffic Signals N-S-E-W-Rev 1.pdf

2/8/159:27 PM

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>

Skip to main content

Attachments

Membership Required

Remove From Your Block List

Manage Follow Preferences

Block

OGR Forum Supporting Membership Required

OGR Forum Supporting Membership

Help support this forum with an OGR Forum Supporting Membership.You will be able to watch the videos in the INSTRUCTIONAL VIDEO FORUM!A one-year OGR Forum Supporting Membership is only $12 per year, so sign up now!

OR

Access the ALL the OGR VIDEO FORUMS AND over 300 back issues of OGRwith a DIGITAL SUBSCRIPTION!

Please wait...

Help support this forum with an OGR Forum Supporting Membership.
You will be able to watch the videos in the INSTRUCTIONAL VIDEO FORUM!
A one-year OGR Forum Supporting Membership is only $12 per year, so sign up now!

Access the ALL the OGR VIDEO FORUMS AND over 300 back issues of OGR
with a DIGITAL SUBSCRIPTION!