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Topic: Analog bass synthesizer shield (Read 5529 times) previous topic - next topic

earx

Hi guys,

I'm new to this forum, but I've been working with Arduino for half a year now. Have to say it's a great platform... the hacking is good :) In the last months I've finished a prototype of an analog bass synthesizer. It's on separate circuit boards now, but will be intended as a shield for the Arduino. I aim to release it for ±100 euro fully assembled, and ±70 euro as a kit.

Features:
- 20Hz - 6 kHz pitch, controllable in 65536 steps (using Arduino PWM)
- sawtooth and square wave oscillator, with toggle switch
- Low-pass resonant filter with 1 potmeter for resonance, and 1 for cut-off (high quality pots, no trash! :))
- 3.5 mm headphone jack
- 8 pushbuttons to select basslines
- switches for portamendo and "echo" effect

Is anybody interested in a purchase? I hope to mass produce the shield by the end of the year. Also, if anybody would like to suggest some features, please let me know.

I have plans to add an additional drummachine onto the shield (the 808 to back-up the 303 ;)), but it might be a little too ambitious...

Thank you for your attention!

DuaneB

Read this
http://rcarduino.blogspot.com/2012/04/servo-problems-with-arduino-part-1.html
then watch this
http://rcarduino.blogspot.com/2012/04/servo-problems-part-2-demonstration.html

Rcarduino.blogspot.com

oric_dan

Would be nice to see a link, even a "proto-not-yet-finalized-but-it-works" link.

earx

#3
May 04, 2013, 11:57 pm Last Edit: May 06, 2013, 01:21 pm by earx Reason: 1
OK, here's the anti-vaporware photos ;)

early prototype: the VCO, VCA and filter (cut-off only)

https://docs.google.com/file/d/0B3d8SNp1pizrbm9jNWZaV0xCVjA/edit?usp=sharing

close-up of the VCO

https://docs.google.com/file/d/0B3d8SNp1pizrYVlPU05jeUhxZkE/edit?usp=sharing

strip-board version of the filter and output circuit, including resonance and cut-off potmeters

https://docs.google.com/file/d/0B3d8SNp1pizrUnN0a1dkMjZUVHc/edit?usp=sharing

earx

I now have a running prototype:

see:
https://docs.google.com/file/d/0B3d8SNp1pizrUWtoY3dqNHB0TGc/edit?usp=sharing
https://docs.google.com/file/d/0B3d8SNp1pizrSTRweGp2blZyeDg/edit?usp=sharing
https://docs.google.com/file/d/0B3d8SNp1pizrS3Mxdmdxd01qb0k/edit?usp=sharing

Audio demos to follow ;)


earx

Selling them for 49 (ex VAT) now:

www.tastychips.nl/shop

For several demo's using the Piggy:

www.tastychips.nl/

earx

Demonstration video, new firmware, etc:

https://www.youtube.com/watch?v=gSEe0UzsLEI

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