fleabag Posted December 11, 2015 Share Posted December 11, 2015 (edited) I built a passive , non powered pre-set volume box ( cut only ) for my pedal board using this tutorial.. [url="http://www.premierguitar.com/articles/19549-state-of-the-stomp-build-a-preset-volume-box"]http://www.premiergu...eset-volume-box[/url] The writer suggests that an LED can be added so you know at a glance that the box is on or off. He doesnt say how to wired the LED into the circuit So can anyone tell me how this would be done ? I have some small LED lights here, which i assume will do the job, but need instructions on how to / where to wire it in Cheers ! Edited December 11, 2015 by fleabag Quote Link to comment Share on other sites More sharing options...
fleabag Posted December 11, 2015 Author Share Posted December 11, 2015 I think to start , i'd need to swap out the footswitch for a 3PDT instead of the DPDT that already in there ? Quote Link to comment Share on other sites More sharing options...
ubit Posted December 11, 2015 Share Posted December 11, 2015 Easy, just take it to a music shop and ask them to do it! Seriously, that level of repair, I would leave to a pro. , but you might be more industrious. Quote Link to comment Share on other sites More sharing options...
BigRedX Posted December 11, 2015 Share Posted December 11, 2015 You need to replace the DPDT footswitch with a TPDT one and then wire the LED along with a battery to the third pole of the switch so that when the signal is routed to the volume potentiometer the LED is on. Quote Link to comment Share on other sites More sharing options...
fleabag Posted December 11, 2015 Author Share Posted December 11, 2015 (edited) [quote name='ubit' timestamp='1449827896' post='2927191'] Easy, just take it to a music shop and ask them to do it! Seriously, that level of repair, I would leave to a pro. , but you might be more industrious. [/quote] Well i built the box itself after sourcing the parts, so if i could get a diagram , i'm sure i could sort it out Edited December 11, 2015 by fleabag Quote Link to comment Share on other sites More sharing options...
fleabag Posted December 11, 2015 Author Share Posted December 11, 2015 [quote name='BigRedX' timestamp='1449827964' post='2927193'] You need to replace the DPDT footswitch with a TPDT one and then wire the LED along with a battery to the third pole of the switch so that when the signal is routed to the volume potentiometer the LED is on. [/quote] The idea was to keep power out of it. I dont to want power the pedal with battery or 9v PS. Does the LED need its own power ? Would signal from the guitar not be enough when the pedal was kicked in ? Quote Link to comment Share on other sites More sharing options...
BigRedX Posted December 11, 2015 Share Posted December 11, 2015 [quote name='fleabag' timestamp='1449828156' post='2927196'] The idea was to keep power out of it. I dont to want power the pedal with battery or 9v PS. Does the LED need its own power ? Would signal from the guitar not be enough when the pedal was kicked in ? [/quote] Unfortunately if you want an LED you need power. Guitar signal strengths are measured in millivolts and you will need at least 3 volts for an LED ( 2 x AA batteries) to be visible under all lighting conditions. Quote Link to comment Share on other sites More sharing options...
fleabag Posted December 11, 2015 Author Share Posted December 11, 2015 Dammit Thanks Red - gonna leave it without LED and have to remember when i've kicked it in Quote Link to comment Share on other sites More sharing options...
BigRedX Posted December 11, 2015 Share Posted December 11, 2015 Having re-read your OP if this is going on a pedal board and you already have a PSU for you other pedals then it would be possible to run the LED of that. You will need to wire a resistor in series with the LED - for a standard red LED run off a 9V PSU something in the region of 390Ω should do. Quote Link to comment Share on other sites More sharing options...
fleabag Posted December 11, 2015 Author Share Posted December 11, 2015 Its getting too complicated for me now, so it will have to remain LED-less Quote Link to comment Share on other sites More sharing options...
ubit Posted December 11, 2015 Share Posted December 11, 2015 [quote name='fleabag' timestamp='1449829734' post='2927215'] Its getting too complicated for me now, so it will have to remain LED-less [/quote] Am I vindicated then ? Quote Link to comment Share on other sites More sharing options...
fleabag Posted December 11, 2015 Author Share Posted December 11, 2015 Yuuuuuuuup ! Have a babycham on me Quote Link to comment Share on other sites More sharing options...
ubit Posted December 12, 2015 Share Posted December 12, 2015 [quote name='fleabag' timestamp='1449853432' post='2927583'] Yuuuuuuuup ! Have a babycham on me [/quote] No wahalla mate, have a good one x Quote Link to comment Share on other sites More sharing options...
.gif.9ad672bb8b84505709f76b39c8c256ec.gif)
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.