madbeanpedals::forum

Projects => Build Reports => Topic started by: LaceSensor on November 24, 2012, 01:12:08 PM

Title: '45' Smoothie
Post by: LaceSensor on November 24, 2012, 01:12:08 PM
Built this today. Waiting on some matched FETs, but sounds pretty cool even with the first two outta my bag (2N5457's)

I added a 20kB Blend Pot, thanks Jon for the tips on how to do that. Also, has a blinking rate LED. Wish the LED faded on and off, it just goes like a square wave on and off...nevermind! It works, thats what matters.
Also added a vibe mod, which sounds subtly, but nicely, different to the normal tone, bit darker and "suckier"

Heres some badly taken pics

(http://i771.photobucket.com/albums/xx351/LaceSensor/P1030395.jpg)

(http://i771.photobucket.com/albums/xx351/LaceSensor/P1030394.jpg)
Title: Re: '45' Smoothie
Post by: midwayfair on November 24, 2012, 01:33:50 PM
Looks good.

I think a 2.2K on the LED's cathode will make it blink a little less square. :)
Title: Re: '45' Smoothie
Post by: LaceSensor on November 24, 2012, 01:42:51 PM
ah ok. I could try that. 2.2k to ground off the negative side, right?

just tried it, no real difference, thanks for the tip tho.
Title: Re: '45' Smoothie
Post by: nzCdog on November 24, 2012, 02:21:02 PM
Nice badly taken pics ;)  Tidy build and I'm sure I've told you before but your logo is sweet 8)
Title: Re: '45' Smoothie
Post by: midwayfair on November 24, 2012, 05:42:23 PM
ah ok. I could try that. 2.2k to ground off the negative side, right?

just tried it, no real difference, thanks for the tip tho.

Darn. Usually that works (tremolos and such). :(
Title: Re: '45' Smoothie
Post by: nzCdog on November 24, 2012, 05:57:22 PM
Actually Lace, here's a way to get to get the Led to fade by creating an RC time constant.
 
You'd need an electro cap connected in parallel with the LED, say 220-470uF.  Then put your 4.7K series current limiting resistor on the anode (+) side of the LED in circuit.  Higher value cap or higher value resistor = slower discharge time, holding the LED in forward bias longer after the power is removed. :)
Title: Re: '45' Smoothie
Post by: LaceSensor on November 24, 2012, 06:05:28 PM
Actually Lace, here's a way to get to get the Led to fade by creating an RC time constant.
 
You'd need an electro cap connected in parallel with the LED, say 220-470uF.  Then put your 4.7K series current limiting resistor on the anode (+) side of the LED in circuit.  Higher value cap or higher value resistor = slower discharge time, holding the LED in forward bias longer after the power is removed. :)

Ill try that next :)
thanks
Title: Re: '45' Smoothie
Post by: LaceSensor on November 24, 2012, 06:25:11 PM
that worked, awesome. Thankyou!
Title: Re: '45' Smoothie
Post by: nzCdog on November 24, 2012, 07:08:32 PM
Woo!  :)
Title: Re: '45' Smoothie
Post by: jimijam on November 25, 2012, 08:15:44 AM

Also added a vibe mod, which sounds subtly, but nicely, different to the normal tone, bit darker and "suckier"



I always thoughta good description was "chewier"!
Title: Re: '45' Smoothie
Post by: LaceSensor on November 25, 2012, 09:17:22 AM
kinda wierd now I have had more time to test it I dont really hear any difference with this set up.

I set it as C5 on a switch, was that the right one?
Title: Re: '45' Smoothie
Post by: timbo_93631 on November 25, 2012, 09:28:19 AM
Do you use the holes in the pot as a strain relief?  I cant tell if the wires are run through the holes on the underside and then up to the lugs and soldered.  If so, that is pretty neat, never thought of doing it that way.
Title: Re: '45' Smoothie
Post by: LaceSensor on November 25, 2012, 09:30:52 AM
Do you use the holes in the pot as a strain relief?  I cant tell if the wires are run through the holes on the underside and then up to the lugs and soldered.  If so, that is pretty neat, never thought of doing it that way.
yeah thats how I do it.
Title: Re: '45' Smoothie
Post by: hoodoo on November 25, 2012, 06:42:55 PM
Love that colour mate, looks great.
All the best, Matt.
Title: Re: '45' Smoothie
Post by: pickdropper on November 25, 2012, 07:58:13 PM
Nice looking build there (as always)
Title: Re: '45' Smoothie
Post by: raulduke on November 26, 2012, 04:13:47 AM
Lovely build mate!

I have a Smoothie that I've not got around too yet.

When I do, I think I will incorporate the mods you have used.
Title: Re: '45' Smoothie
Post by: LaceSensor on November 26, 2012, 07:56:31 AM
Lovely build mate!

I have a Smoothie that I've not got around too yet.

When I do, I think I will incorporate the mods you have used.

apparently its better to change c2 and c3 for the vibe (10n and 100n)