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DIY Stompboxes => Building your own stompbox => Topic started by: Kipper4 on February 05, 2017, 12:17:22 PM

Title: Dual indicator leds
Post by: Kipper4 on February 05, 2017, 12:17:22 PM
Guys help an old man out.
When the boxes arrive I want to box up my drive.
I want to use dual indicator leds for bypass/on.
3mm reds.
How do I wire them?
Series. Parallel ? And what about clrs.
They're hopefully going to be fitted to the box though a tight fit hole then the tops sanded off flat so they shine through the vinyl label.
Thanks
Rich
Title: Re: Dual indicator leds
Post by: EBK on February 05, 2017, 01:07:07 PM
Quote from: Kipper4 on February 05, 2017, 12:17:22 PM
Guys help an old man out.
When the boxes arrive I want to box up my drive.
I want to use dual indicator leds for bypass/on.
3mm reds.
How do I wire them?
Series. Parallel ? And what about clrs.
They're hopefully going to be fitted to the box though a tight fit hole then the tops sanded off flat so they shine through the vinyl label.
Thanks
Rich
Sounds like you're planning some glowing red "eyes", am I right?
I did something similar, but not with a vinyl label:
http://www.diystompboxes.com/smfforum/index.php?topic=116301.msg1076191#msg1076191

Anyway, you can do either series or parallel.  With parallel, you should give each LED its own CLR (any slight difference in Vf will show otherwise).  I'm series, you can add your voltage drops, subtract that from your supply voltage, and divide by the current you want.  You may want to test brightness through your label to decide on your current.
Title: Re: Dual indicator leds
Post by: Kipper4 on February 05, 2017, 01:30:45 PM
"Sounds like....."
Busted.

How did you wire the ones on the Trump pedal.
That was you wasn't it?

Thanks for the help. Getting the brightness right I'm sure will be a struggle. I do have a gash enclosure I could experiment on though.
Title: Re: Dual indicator leds
Post by: EBK on February 05, 2017, 01:39:07 PM
Quote from: Kipper4 on February 05, 2017, 01:30:45 PM
"Sounds like....."
Busted.

How did you wire the ones on the Trump pedal.
That was you wasn't it?

Thanks for the help. Getting the brightness right I'm sure will be a struggle. I do have a gash enclosure I could experiment on though.
Trump pedal is not mine (I hope it was an Uglyface circuit).  :icon_lol:
I'd say save a penny and wire them in series.
Title: Re: Dual indicator leds
Post by: Groovenut on February 05, 2017, 01:57:36 PM
Hey Rich!

In series you would have double the voltage drop, so 3.4 form 9 which will be 5.6 / 5mA (lets say) = ~1k1 (just use a 1k, close enough).

I originally thought you were asking for one to be on when bypassed and the other to be on when active and had a different circuit in mind, but it appears you would like the both on or off.

Cheers!
Title: Re: Dual indicator leds
Post by: Kipper4 on February 05, 2017, 02:28:16 PM
Yikes only 5v6 left to run the circuit right.
I'll tell you what though Lawrence I wouldn't mind seeing the on/bypass led each, circuit idea.
I might just change my mind and go with different colour leds for each eye.
Thanks mate
Rich
Title: Re: Dual indicator leds
Post by: EBK on February 05, 2017, 02:32:24 PM
No....  5.6v across the CLR.  Your circuit will be separately across the whole 9V. 
Title: Re: Dual indicator leds
Post by: EBK on February 05, 2017, 02:43:05 PM
Here's a little hint for two alternating colors, which demonstrates why to use separate CLRs normally for parallel LEDs.  If you use a single CLR and connect that to a parallel combination of a red LED and a green LED, only the red one will light.  Disconnect the red one (with, say, a SPST switch) and the green one will light.
Title: Re: Dual indicator leds
Post by: Kipper4 on February 05, 2017, 03:19:15 PM
Quote from: EBK on February 05, 2017, 02:32:24 PM
No....  5.6v across the CLR.  Your circuit will be separately across the whole 9V.

Yer of course. My bad.
I feel really dumb even asking this beginner question. I do have google but I know you guys will second guess me. Provide opinions and methods I can't even get my head around this evening.
So thanks guys again sorry I can't think straight.
Title: Re: Dual indicator leds
Post by: EBK on February 05, 2017, 03:35:10 PM
No judgments here.  Ask all the questions you want.  We'll keep you thinking straight enough.
Title: Dual indicator leds
Post by: Groovenut on February 05, 2017, 08:10:54 PM
Here's one way to do it

(https://uploads.tapatalk-cdn.com/20170206/1c16a6db885a285f8e653ca3e9bfdae2.jpg)
Or this if you want to save a part
(https://uploads.tapatalk-cdn.com/20170206/489d178795a69042d66f90f4b91d7187.jpg)
Or this to save another part and have control over individual led current.
(https://uploads.tapatalk-cdn.com/20170206/6dfdce04d441b794796110bf96c7cd3d.jpg)
Or if you want to skip the transistors, this works too
(https://uploads.tapatalk-cdn.com/20170206/c0ba58f4291f1ee95d1bb0d768a4f385.jpg)
Title: Re: Dual indicator leds
Post by: Kipper4 on February 06, 2017, 09:39:44 AM
Thanks guys I'm gonna bread board some stuff before I box it.
My heads a bit clearer today.
Title: Re: Dual indicator leds
Post by: EBK on February 06, 2017, 10:04:44 AM
Great.  I'd suggest starting with Lawrence's first version: 1k resistor and 2 LEDs, all in series.
Title: Re: Dual indicator leds
Post by: EBK on February 06, 2017, 10:15:26 AM
Quote from: Groovenut on February 05, 2017, 08:10:54 PM
Or if you want to skip the transistors, this works too
(https://uploads.tapatalk-cdn.com/20170206/c0ba58f4291f1ee95d1bb0d768a4f385.jpg)
That's the arrangement I was mentioning yesterday.  It will only work if LED1 has a lower Vf than LED2, of course.  For example, LED1 = red and LED2 = green.
Title: Re: Dual indicator leds
Post by: Groovenut on February 06, 2017, 10:24:04 AM
Quote from: EBK on February 06, 2017, 10:15:26 AM
Quote from: Groovenut on February 05, 2017, 08:10:54 PM
Or if you want to skip the transistors, this works too
(https://uploads.tapatalk-cdn.com/20170206/c0ba58f4291f1ee95d1bb0d768a4f385.jpg)
That's the arrangement I was mentioning yesterday.  It will only work if LED1 has a lower Vf than LED2, of course.  For example, LED1 = red and LED2 = green.
Thanks for mentioning that Eric. I should have stated that LED1 = red and LED2 = green. If you use two of the same LEDs you can insert a diode (1N4148) in series with the LED that is // to the switch.
Title: Re: Dual indicator leds
Post by: EBK on February 06, 2017, 10:39:28 AM
Quote from: Kipper4 on February 05, 2017, 02:28:16 PM
I might just change my mind and go with different colour leds for each eye.
You could also consider using bi-color LEDs and switch both eyes from, say, red to green.  I'm actually using RGB LEDs for my Clippy pedal to show different modes with different colors.  Tons of possibilities.
Title: Re: Dual indicator leds
Post by: Kipper4 on February 06, 2017, 11:01:27 AM
I'm going with 2x red 3mm series with a 1k CLR
cheers guys
Title: Re: Dual indicator leds
Post by: anotherjim on February 06, 2017, 11:09:13 AM
I'd triple guess that Rich would want envelope control of the colours.
:icon_evil:
...mood detection is it?
Title: Re: Dual indicator leds
Post by: digi2t on February 06, 2017, 11:41:00 AM
Quote from: EBK on February 05, 2017, 01:39:07 PM
Trump pedal is not mine (I hope it was an Uglyface circuit).  :icon_lol:

That should be a signature line. Or in the joke thread, at the very least. Made my "smile of the day" moment.
Title: Re: Dual indicator leds
Post by: Kipper4 on February 06, 2017, 11:46:05 AM
Quote from: anotherjim on February 06, 2017, 11:09:13 AM
I'd triple guess that Rich would want envelope control of the colours.
:icon_evil:
...mood detection is it?

Thats not a bad idea to add an envelope detector and light up the leds on playing.
Only trouble is it wont tell the player if its on or not until its too late and your solo sounds lames and you die of shame.

I goddam wish I had a pedal that could read my mood and adjust the settings accordingly.
Thanks to Eric, law, and everyone for the boost and thinking for me.
Title: Re: Dual indicator leds
Post by: Kipper4 on February 06, 2017, 03:51:59 PM
The results are in. See here.

http://www.diystompboxes.com/smfforum/index.php?topic=36392.msg1081946#new
Title: Re: Dual indicator leds
Post by: EBK on February 06, 2017, 04:08:53 PM
Not sure whether to reply here or there.  I'll pick here.  Did you end up sanding down the LEDs and mounting them behind the label like you originally planned?  Hard to tell from the pic.  Very trippy.  :icon_smile:
Title: Re: Dual indicator leds
Post by: Kipper4 on February 06, 2017, 04:22:07 PM
Yes Eric I sanded the tops of the leds flat. They're behind a transparent label this time.
I normally use white labels but my stock has depleted, they're on back order.
It's the prototype so I'll keep it.
Title: Re: Dual indicator leds
Post by: EBK on February 07, 2017, 08:26:08 AM
Quote from: Kipper4 on February 06, 2017, 11:46:05 AM
I goddam wish I had a pedal that could read my mood and adjust the settings accordingly.
Quite OT, but I actually have something like this on my drawing board.  Picture a cross-fader mixing two (or more) effect loops based on the output of an envelope follower with a really slow attack and decay.  As you play more aggressively, it shifts smoothly toward the next loop.  Ease up, and it smoothly shifts back.   :icon_biggrin:. I may end up adding a bit of automatic level control so you can shift it upward without necessarily making it louder.

Edit: Not 100% original, by the way.  See http://www.diystompboxes.com/smfforum/index.php?topic=51263.msg384459#msg384459
But, I think I have a few tricks I can add.  :icon_wink:
Title: Re: Dual indicator leds
Post by: Kipper4 on February 07, 2017, 08:33:46 AM
Sounds intresting Eric. I'll look forward to it.
Title: Re: Dual indicator leds
Post by: Kipper4 on February 07, 2017, 03:58:19 PM




Title: Re: Dual indicator leds
Post by: EBK on February 07, 2017, 09:40:39 PM
Quote from: digi2t on February 06, 2017, 11:41:00 AM
Quote from: EBK on February 05, 2017, 01:39:07 PM
Trump pedal is not mine (I hope it was an Uglyface circuit).  :icon_lol:

That should be a signature line. Or in the joke thread, at the very least. Made my "smile of the day" moment.
Glad it amused you.  :icon_biggrin: The Uglyface connection actually came to me originally (and immediately) when I read the Subject of this thread: http://www.diystompboxes.com/smfforum/index.php?topic=16158.msg91519#msg91519
I'll throw it in my signature, at least for a while.  :icon_wink: