Presenting: Crowminius
Moderators: Kent, luketeaford, Joe., lisa
- Microscopial
- "stripes!!!" what me mmmm
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Oh yes please indeed
lamond design
"working with wood"
email/ lamonddesign@gmail.com
flickr/ http://www.flickr.com/photos/59671775@N03/
twitter/ lamonddesign http://twitter.com/#!/
facebook/ ross lamond http://www.facebook.com/ross.lamond1 or follow the lamonddesign page
website/ www.lamonddesign.co.uk
"working with wood"
email/ lamonddesign@gmail.com
flickr/ http://www.flickr.com/photos/59671775@N03/
twitter/ lamonddesign http://twitter.com/#!/
facebook/ ross lamond http://www.facebook.com/ross.lamond1 or follow the lamonddesign page
website/ www.lamonddesign.co.uk
- oldcrow
- Super Deluxe Wiggler
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There are a few extra costs to consider, such as the case, a wall transformer (unless folks are like me and have a couple hundred of them) and knobs. I was able to effectively get mine built for $300 but I ordered enough parts to build five which brought the average down a bit. Still, with shipping costs and the hardware mentioned above factored in, I see a single-unit cost being US$350 max. complete as shown above. My firmware will be free with sources on github once I am done with the initial version. --Crow
colorbars wrote:$190 for parts, $100 for pcb... A minimoog for under $300
- oldcrow
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I might try to make something, but it is not high on my list at the moment. When I have final specs on the rev1.1 board I will provide a part placement file for the board-mounted control positions.
I use Alpha 9mm pots at the moment. To allow for a panel I'd need to use a longer pot, such as http://media.digikey.com/photos/Panason ... SERIES.jpg
The main issue at the moment is getting Mouser or another vendor to quote me the Alpha SR2513-type bottom-mount rotary switches, which have the switch shaft coming up through a hole in the PC board. I've already provisioned for this in the artwork, I just need to get a buy in on the switches. --Crow
Other folks might want to make a larger breakout control panel and use pin headers for most of the board control positions. Go for it.
--Crow
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I use Alpha 9mm pots at the moment. To allow for a panel I'd need to use a longer pot, such as http://media.digikey.com/photos/Panason ... SERIES.jpg
The main issue at the moment is getting Mouser or another vendor to quote me the Alpha SR2513-type bottom-mount rotary switches, which have the switch shaft coming up through a hole in the PC board. I've already provisioned for this in the artwork, I just need to get a buy in on the switches. --Crow
Other folks might want to make a larger breakout control panel and use pin headers for most of the board control positions. Go for it.


--Crow
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amnesia wrote:This looks great. Without going through all the pages here, will there be a faceplate?
- oldcrow
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Yes, mount pots and switches to a panel and 3-pin friction-lock headers, 2mm for the small switches, 2.5mm for the pots and manual wiring for the rotary switches. --Crow
Dude163 wrote:Thanks for the info OC!
so you could use a pot on a separate surface and just use wires to connect to the PCB? Like if I make a case for it I meant
sounds amazing
- Dr. Sketch-n-Etch
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- oldcrow
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Listening to my 1977 Star Wars Album by the "Electric Moog Orchestra" I've decided to cram one more thing onto this board. An S/H mode for modulation source. LF398-type as I did with my MonoPoly years ago.
http://www.oldcrows.net/~oldcrow/synth/ ... shmod.html
On Crowminius a new switch crammed in between the OSC2 and OSC3 frequency interval pots will select red/pink noise (original) or clocked red/pink held samples to the noise side of the mod mix pot.
I blame this track from my album specifically.
Proofing of all my revisions to correct minor mistakes tomorrow, then I submit files for manufacture. --Crow
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http://www.oldcrows.net/~oldcrow/synth/ ... shmod.html
On Crowminius a new switch crammed in between the OSC2 and OSC3 frequency interval pots will select red/pink noise (original) or clocked red/pink held samples to the noise side of the mod mix pot.
I blame this track from my album specifically.


Proofing of all my revisions to correct minor mistakes tomorrow, then I submit files for manufacture. --Crow
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- oldcrow
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Reviewing rotary switches, I will caution now that I have sized the six switch positions for a Alpha SR2512F-series 2-pole, 6-position PCB mount part. I notice a number of these offered for sale on ebay and aliexpress that have the common pole pins on a different angle offset than the part number I am specifying. The full part number I use is SR2512F-0206-19R0B-E9-N-W.
While I expect the switches from China online retailers work fine, their mechanical fit might be a minor issue as the lobes of the switch would orient at a different angle than expected, meaning some resistors may need to mount on the board's underside to avoid the switch body.
By the way, C&K switches will not fit. Those use a 22.2mm dia. contact pin outer ring and a 7.7mm wiper pin inner ring. Alpha switches use a 20mm outer ring and an 11mm inner ring. Of course, off-board panel builders can use whatever they want.
FYI,
Crow
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While I expect the switches from China online retailers work fine, their mechanical fit might be a minor issue as the lobes of the switch would orient at a different angle than expected, meaning some resistors may need to mount on the board's underside to avoid the switch body.
By the way, C&K switches will not fit. Those use a 22.2mm dia. contact pin outer ring and a 7.7mm wiper pin inner ring. Alpha switches use a 20mm outer ring and an 11mm inner ring. Of course, off-board panel builders can use whatever they want.

FYI,
Crow
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- oldcrow
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Another small cost detail, I did not include the price of the LCD. The LCD is optional but if used will allow some MIDI front end settings to be changed/displayed. I use this one: https://www.adafruit.com/product/772
I've not tried the supercheap ones from places like aliexpress yet, but they *should* work. The only caveat is if their board size is close to what I provisioned for on the Crowminius MIDI corner area. --Crow
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I've not tried the supercheap ones from places like aliexpress yet, but they *should* work. The only caveat is if their board size is close to what I provisioned for on the Crowminius MIDI corner area. --Crow
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- Common Wiggler
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- oldcrow
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OK, for the initial board batch I will have 25 bare boards available. These are rev1.1 incorporating all the minor corrections I've made to rev1.0. For this first batch only I am offering the board at 20% off the $100 price for a final price of $80 (plus any applicable taxes) plus shipping. These boards are expected to arrive on 4/17/15 but I have opened up a pre-order for them on my shopify site. http://www.cs80.com/crowminius
--Crow
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--Crow
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- oldcrow
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Note: this offer is only being posted here to Muff's. It might make it to other sites indirectly, but Wigglers get first notice.


oldcrow wrote:OK, for the initial board batch I will have 25 bare boards available. These are rev1.1 incorporating all the minor corrections I've made to rev1.0. For this first batch only I am offering the board at 20% off the $100 price for a final price of $80 (plus any applicable taxes) plus shipping. These boards are expected to arrive on 4/17/15 but I have opened up a pre-order for them on my shopify site. http://www.cs80.com/crowminius
--Crow
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Last edited by oldcrow on Fri Apr 03, 2015 7:47 pm, edited 1 time in total.
- phutureboy
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