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treble toggle w/ led

PostPosted: 15 Mar 2013, 22:50
by razorblades
Hey guys, another noob here. I'm building an lpb-1.I added a treble toggle with a dpdt on/on. Worked great. I tried to add an led for the treble side. It compressed the #@%& out of it (I now know why). I got some sub mini incandescent bulbs but they don't work. Do I need a different switch, a new approach or do I just have some broken bulbs? Help is greatly appreciated

Re: treble toggle w/ led

PostPosted: 15 Mar 2013, 23:54
by Cub
Hey blades, welcome to the forum.

Beavis Audio has a great page on switches, including a layout for a switch that you want.
http://www.beavisaudio.com/techpages/Switches/

Re: treble toggle w/ led

PostPosted: 16 Mar 2013, 00:52
by razorblades
I think I have it. 3pdt. Led goes 8 to 9. Then 8 to the clr on the board. Am I in the ball park? Thanks for the welcome and the link.

Re: treble toggle w/ led

PostPosted: 16 Mar 2013, 07:51
by Cub
I'm not entirely sure. For the treble mod, you have to switch both caps, right ?
Then here's how I would do it, this is your 3PDT switch.
Code: Select all
|1|4|7|
|-|-|-|
|2|5|8|
|-|-|-|
|3|6|9|

1. stock cap 1
2. hole on the board for cap 1
3. treble cap 1
4. stock cap 2
5. hole on the board for cap 2
6. treble cap 2

Exactly like Beavis drew it.
Image


As for the LED

7.
8. ground
9. LED -

For uniformity, use the same value resistor on the LED + side that you use for the on/off indicator, then both LEDs will shine just as bright. Put the other end of the resistor through to the battery and you're done. :thumbsup

Re: treble toggle w/ led

PostPosted: 16 Mar 2013, 09:17
by razorblades
Great! I'll pick one up tomorrow. I've been using the wrong switch and approach. Can't thank you enough. :thumbsup

Re: treble toggle w/ led

PostPosted: 16 Mar 2013, 11:32
by Cub
Glad I could help, good luck with your build ! :thumbsup

Re: treble toggle w/ led

PostPosted: 23 Mar 2013, 01:52
by razorblades
Toggle came in the mail earlier. I followed the guidelines and it works great. Thanks again :horsey:

Re: treble toggle w/ led

PostPosted: 23 Mar 2013, 12:38
by Cub
Good to hear ! You've doubled the versatility of your pedal and the added LED is a nice and classy touch. :thumbsup

Re: treble toggle w/ led

PostPosted: 03 Apr 2014, 03:45
by razorblades
This project got left behind and forgotten about. After building it, there was a noticeable volume drop. Still learned a tool that could be interesting in a larger circuit.