Reply to "Very Large Scale LED question:"

MCD4x4OGR Forum Member SUPPORTING MEMBER

@Rich Melvin posted:
Gunrunner John has it right.
Don't use any of the circuitry on those boards. Just cut the leads to the existing LEDs (thankfully the leads have some extra wire to work with) and power them with 12 volts DC and the 560 ohm resistor John suggested. The board even shows you which lead on the LED is negative. It looks like that board has seen better days anyway. Lots of ugly solder work there.
What a neat thing to have in your train room!

Hi Rich, Thanks for the advice, John is an invaluable help to all of us. the board has seen many days since 1957 to the early 60's when these cars were made for the City of New York, every part on there is original OEM. I forgot to mention, on the other side of the cab is the men's room. I still have to hang the motorman's cab door and the sink. It's a work in progress.

Brain

Attachments

Hide

Images (2)

1/10/215:32 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!