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Projects => Build Reports => Topic started by: aballen on May 03, 2013, 02:34:06 PM

Title: My Sonic Screwdriver
Post by: aballen on May 03, 2013, 02:34:06 PM
I was really intimidated, but I liked the challenge as well, so I figured why not take a shot at it.  This is my first SMT project, and right now I'm just bouncing off the walls cause it worked, the first time I fired it up.  It is a damn versatile pedal too.

I took my time and tried to be methodical.  No where near as clean as the masters work, but I'm still satisfied.

First I did the resistors, they were the smallest components, so I figured if I could do these, the rest would work out.
(http://i1200.photobucket.com/albums/bb321/bitracer/Pedals/SonicScrewdriver/3FC851C9_zps944fc5f3.jpg) (http://s1200.photobucket.com/user/bitracer/media/Pedals/SonicScrewdriver/3FC851C9_zps944fc5f3.jpg.html)

Then the capacitors
(http://i1200.photobucket.com/albums/bb321/bitracer/Pedals/SonicScrewdriver/9D7FAD0C_zps434a5515.jpg) (http://s1200.photobucket.com/user/bitracer/media/Pedals/SonicScrewdriver/9D7FAD0C_zps434a5515.jpg.html)

and the rest, here is a pic to give you some scale.
(http://i1200.photobucket.com/albums/bb321/bitracer/Pedals/SonicScrewdriver/CD80B0E9_zpsc67fbf90.jpg) (http://s1200.photobucket.com/user/bitracer/media/Pedals/SonicScrewdriver/CD80B0E9_zpsc67fbf90.jpg.html)

I made some little pot mounts from strip board, like in Brians build doc, very handy.
(http://i1200.photobucket.com/albums/bb321/bitracer/Pedals/SonicScrewdriver/60CBFAA2_zps3b479f41.jpg) (http://s1200.photobucket.com/user/bitracer/media/Pedals/SonicScrewdriver/60CBFAA2_zps3b479f41.jpg.html)

I really took my time drilling, one hole at a time, eventually I got it wired up, and put in that one last tranny.
(http://i1200.photobucket.com/albums/bb321/bitracer/Pedals/SonicScrewdriver/84B7AAB4_zps18c97678.jpg) (http://s1200.photobucket.com/user/bitracer/media/Pedals/SonicScrewdriver/84B7AAB4_zps18c97678.jpg.html)

I have to decide on which knobs I will use on the sides, big ones or small ones?  Right now I'm leaning towards the smalls.
(http://i1200.photobucket.com/albums/bb321/bitracer/Pedals/SonicScrewdriver/6A26010B_zps6e751369.jpg) (http://s1200.photobucket.com/user/bitracer/media/Pedals/SonicScrewdriver/6A26010B_zps6e751369.jpg.html)

(http://i1200.photobucket.com/albums/bb321/bitracer/Pedals/SonicScrewdriver/DA551B16_zps3af2f161.jpg) (http://s1200.photobucket.com/user/bitracer/media/Pedals/SonicScrewdriver/DA551B16_zps3af2f161.jpg.html)

I have to get it labeled, but it all fits nice... I have a lot of boxes in need of graphics right now.

Thanks Dave for the inspiration and the great board.
Title: Re: My Sonic Screwdriver
Post by: pickdropper on May 03, 2013, 03:04:03 PM
Hey, great job.  SMT is a different style of build, but it isn't as bad as some people fear and it gets easier as you do it.

As far as the box goes, I prefer smaller knobs on the side (although the big knobs have a Princess Leia vibe to them).

For the side knobs, I always use the small MXR style knobs.  They still stick out too far, so I do two things:

1) take a 1/4 drill bit and drill out the knob a bit.  I don't go through the top if the knob, I just take out the cross-brace on top that prevents the knob from going lower.  I twist the bit with my fingers.  No power needed.

2) I also file down the pot shafts.  I've tried cutting them down on a mill and grinding them down on a grinding wheel, but I've had better success just grabbing a metal file and working them down.  It is a pain, though.
Title: Re: My Sonic Screwdriver
Post by: aballen on May 03, 2013, 08:46:29 PM
Thanks for the tip Dave.  I bought two small mxr style knobs, no skirt.  I thought they looked just like yours but I had the problem you are describing.  I'll try the technique you described to see if I can get the smaller knobs on.

There is a surprising amount of room in the 1590A when your board is smt and you use the tiny ribbon cables.  I'll bet I could fit 8 pots in there with an smt board.

Definitely have me interested in more smt stuff.
Title: Re: My Sonic Screwdriver
Post by: jimilee on May 03, 2013, 08:52:01 PM
Wow,those resistors are so tiny. I had to squint to see them on the screen. I like the little knobs too. Big ones are kind of unique,but not practical on a pedal board,they'd just get in the way.
Title: Re: My Sonic Screwdriver
Post by: pickdropper on May 03, 2013, 08:54:15 PM
Thanks for the tip Dave.  I bought two small mxr style knobs, no skirt.  I thought they looked just like yours but I had the problem you are describing.  I'll try the technique you described to see if I can get the smaller knobs on.

There is a surprising amount of room in the 1590A when your board is smt and you use the tiny ribbon cables.  I'll bet I could fit 8 pots in there with an smt board.

Definitely have me interested in more smt stuff.

Yeah, you could fit 8 knobs in there, although there is a bit less room on the left side due to the the body of the output jack.
Title: Re: My Sonic Screwdriver
Post by: midwayfair on May 03, 2013, 09:01:16 PM
Great work! You're a brave man. :)

That picture with the battery in it was a perfect reveal -- everything looks HUGE until that picture.
Title: Re: My Sonic Screwdriver
Post by: aballen on May 04, 2013, 06:13:02 AM
Thanks Jon, that means a lot coming from you, your one of the 1590A masters!  I've never even considered 0603 sized components before... I think next time I can do even better.

Great work! You're a brave man. :)

That picture with the battery in it was a perfect reveal -- everything looks HUGE until that picture.
Title: Re: My Sonic Screwdriver
Post by: wgc on May 04, 2013, 06:30:12 AM
Nice job!
Title: Re: My Sonic Screwdriver
Post by: DutchMF on May 04, 2013, 11:01:26 AM
You hero!!! It all looks so clean, like you've been doing that for ages.... Congrats dude, that is so f*^&k*n cool! Knob-wise, I prefer the big ones....

Paul
Title: Re: My Sonic Screwdriver
Post by: jubal81 on May 04, 2013, 11:06:11 AM
Very, very slick. Great job!  :o
Title: Re: My Sonic Screwdriver
Post by: billstein on May 04, 2013, 11:48:00 AM
Does anybody know a good tutorial on smt?
Title: Re: My Sonic Screwdriver
Post by: DutchMF on May 04, 2013, 01:07:25 PM
There's a whole lot of good info right here on MB, but I forgot where....  :( Search, and you will find!

Paul
Title: Re: My Sonic Screwdriver
Post by: billstein on May 04, 2013, 05:55:45 PM
There's a whole lot of good info right here on MB, but I forgot where....  :( Search, and you will find!

Paul

Thanks Paul. I'll do some more looking. I have found some tutorials but a lot of them seem to need specialized equipment. I was hoping to find a step-by-step tutorial geared more for folk like us.
Title: Re: My Sonic Screwdriver
Post by: aballen on May 04, 2013, 07:45:58 PM
I like the smaller knobs on the sides as well, the pedal kind of looked like it had some big dorky ears.  I was able to cut the pot shafts off with a dremel cutting wheel.  Pretty easy actually, I also bored out the knobs a little and switched to a red 3mm led, which I think looks nicer.  I'm pretty happy with the "form" now, just have to figure out graphics... really tiny graphics.

(http://i1200.photobucket.com/albums/bb321/bitracer/Pedals/SonicScrewdriver/1E6A4C45_zps6f0a4a0f.jpg) (http://s1200.photobucket.com/user/bitracer/media/Pedals/SonicScrewdriver/1E6A4C45_zps6f0a4a0f.jpg.html)
Title: Re: My Sonic Screwdriver
Post by: pickdropper on May 04, 2013, 09:07:53 PM
That looks good to me.  :-)
Title: Re: My Sonic Screwdriver
Post by: Parra on May 05, 2013, 11:05:54 AM
tiny little box of noise, that board looks great. I have try one of these someday
Title: Re: My Sonic Screwdriver
Post by: gingataff on May 06, 2013, 04:10:37 AM
Cool, I've never tried SMT but I'd be really proud if that was my first attempt.
Title: Re: My Sonic Screwdriver
Post by: aballen on May 08, 2013, 06:57:19 PM
You should try it.  Really the only thing I needed that was different from my ordinary builds was a fine tip for my soldering iron, flux, tweezers, and some finer gauge solder.