2010 Build Pictures

tjookum · Posted: Wed Oct 13, 2010 11:56 pm Post subject:

very cool darkomen, I really like to see someone's first ventures into synthmaking. Very nice work on the perfboard and panels, looks great!

What are you planning on doing next?

XCenter · Joined: Oct 01, 2005 Posts: 113 Location: Germany

Scot Solida · Joined: Oct 24, 2009 Posts: 100 Location: Hutchinson Kansas

darkomen · Joined: Jun 21, 2010 Posts: 40 Location: USA

synthmonger · Posted: Fri Oct 15, 2010 12:09 am Post subject:

Posted Image, might have been reduced in size. Click Image to view fullscreen.

info on them here http://www.flickr.com/photos/synthmonger/5083337442/

kkissinger · Posted: Fri Oct 15, 2010 7:38 am Post subject:

Beautiful and unique panels. What kind of material did you use for the panels?

synthmonger · Posted: Fri Oct 15, 2010 4:22 pm Post subject:

http://www.acehardware.com/product/index.jsp?productId=1308453

I can't find the exact link to the ones I purchased but if you go inside an Ace Hardware and ask for Aluminum sheets they'll direct you to a nice display of them. Most are 4x10 but they have other sizes. They're about $4 dollars.

Stick with the 4mm or greater thickness though, the 2mm thick panels bend a lot when drilling. You'll also get a ton of burrs with either thickness.

For the labeling I use this kind of "paper"
http://www.google.com/products/catalog?q=Avery+18665&um=1&ie=UTF-8&cid=3490315950464576597&ei=ceG4TLj7FdidlQe3jJ3XDQ&sa=X&oi=product_catalog_result&ct=result&resnum=3&ved=0CCwQ8wIwAg#

It is semi-gloss but spray some clear coat on it and it'll end up looking great. I always spray a hefty amount on them and then bake for 5-10 seconds. As soon as it clears up I remove them from the oven or they'll start to rink up in spots. A blow dryer will probably work just as well.

shawn · Joined: Dec 13, 2005 Posts: 209 Location: savannah

I didn't think of Ace Hardware. Nice! Now I can engrave my front panels with the cnc! Woop! Thanks man!

synthmonger · Posted: Fri Oct 15, 2010 7:31 pm Post subject:

you betcha Wink

shawn · Joined: Dec 13, 2005 Posts: 209 Location: savannah

Meant to ask, what did you use to cut them?

synthmonger · Posted: Fri Oct 15, 2010 8:42 pm Post subject:

The panels come in 4x10 size. No cutting necessary.

Spacehardware · Joined: Jan 21, 2010 Posts: 7 Location: Bristol,UK

Hello all,
First of all this a great site and constant source of inspiration.
And I thought it was time I posted something after lurking for a couple of years.

This is a digital monosynth I finished this summer, (only just) in time for the Synth DIY event in Cambridge.

dsPIC30F4013 = Wave processing
PIC18F4022 = Keyboard scanner
PIC12F x 3 = LFOs
PIC16F x 2 = Envelopes
4046 PLLs = Analog Oscillators (not working yet)
SSM2044 = Filter 1
MF10 (switched cap filter) = Filter 2

And there's some YouTube stuff as well:
http://www.youtube.com/watch?v=kErBx2ZNiwE
http://www.youtube.com/watch?v=TJenM5xrqr4
http://www.youtube.com/watch?v=3PV4Us6Uc0M

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Scot Solida · Joined: Oct 24, 2009 Posts: 100 Location: Hutchinson Kansas

Holy moly, mrbf. That is truly magnificent!

Spacehardware · Joined: Jan 21, 2010 Posts: 7 Location: Bristol,UK

Thanks Scot!
I tried to cram in as many ideas as possible, and see what sounded good.
My next project will be something smaller. Smile

johans121 · Posted: Sat Oct 16, 2010 10:17 am Post subject:

MRBF, it looks as though you used plexiglass with paper underneath for your panel. If that is the case, how exactly did you drill the holes without having melted plexiglass piled up around the drill bit exit points and how did you get such large holes without cracking the plexiglass?

I have only had minor successes drilling plexiglass without it cracking it in the process.... Sad

Spacehardware · Joined: Jan 21, 2010 Posts: 7 Location: Bristol,UK

Spot on Johans, it's plexiglass with (laminated) paper underneath.
I think varying the drill speed from low to medium, and the amount of force while drilling, helped. I still got a build up of melted plexiglass on the drill bit but the holes came out ok, and cleaned up well with a bit of deburring.

Having said all that... although it's an inexpensive method, for me the end result is too reflective and can make it difficult to see the labelling.
I might try aluminium for the next project.

adamon · Posted: Sat Oct 16, 2010 1:12 pm Post subject:

I've had success drilling a lot of different sized holes in acrylic (similar to plexiglass) with an uni-bit (or a stepped bit). I start off with a pilot hole, then use something small like a 1/16" bit, then once I have the initial hole, I use the uni-bit the rest of the way (uni-bits won't really guide themselves without an initial hole). Uni-bits are great for thin sheet metal also...

Nice looking stuff in here everyone!

sndbyte · Joined: Jun 26, 2009 Posts: 119 Location: sf

I already posted this in the Lunetta section, but thought I'd post it here as well. It's a digital logic sound machine using all CMOS chips (with the exception of one Op Amp used for a filter). It is made up off oscillators, logic gates, dividers, sequencers, lfos, melody generators, etc. You can patch the individual chips together using thin wire jumpers. The square headers are inputs and the round metal headers are outputs. There is a passive mixer but also 3 peizo disks mounted on the rear which you can use as well (that is what the 3 wires pictured are connected to). I lost count, but there are over 100 LEDs on this thing! It runs off a 9 volt battery. It is less than 3 inches thick so I can hang it on the wall when I'm not using it.

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