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I was able to get the MCU socketed it required using a non dust shielded alpha pot instead of the one provided.
While the v/octave may not be perfect it is much better than my MFOS quantizer, plus there are many different modes/scales supported, and the range is better than the MFOS one.
The V/octave is set internal to the MCU which contains both DAC and ADC. Potentially the MCU could be recoded.
For what it does and compared to what else is available I'm quite happy with mine.
The main disadvantage of this module is that it can't be adjusted. My module has scale about 0.98v/Octave and it is not OK for me. It needs just one more TL072 and two multi-turn trimpots. At least as the option.
The PCB layout is far from being perfect. It is impossible to use DIP-sockets with MCU. I had to solder it right to the board. There was some missing components in the kit. The PCB design requires too much wires. but this tiny circuit might be made on a single one-sided board with maximum possible amount of PCB-mounted components. The pots in my package had too long shafts pushing pot caps to extra-height about 7mm above the surface of the panel. This is sole module in my rack having such problem.
The circuit, logic and design are OK with exception of missing adjustment possibility.
By the way, you can share power between two parts of this module. There is corresponing holes in the PCB, named +12v, GND, -12v, +5v. So, there is no actual need to use both LM7805. One of these can handle enough power to feed entire 5v bus of the 6u case.
P. S. Panel design could be much more useful having any legend
It's an exact copy of the ARP 4035 filter, based on the project by AndyR1960, a user of electro-music.com. The panel has been designed by my best friend.
But Old Crow may have, at least at one point, offered just the PCB for sale so maybe someone made a DIY version of it but they didn't have a proper picture to use here? ? It's a great sounding filter regardless! :-)
Oh thanks. Yeah, this module is over 4 inches deep...something I thought was important to know, especially if you only have a skiff, or a shallow case. :)
Wow. Love at first sight. I've had this module for about 2 hours, and love it already. Sounds fantastic. Lots of waves, interpolating between them is killer, and can create some otherwordly sounds. Highly recommended!
Hi all, Tried a few sizes to get the graphic to fit correctly... 19 HP seems really odd but that's what seems to have the correct aspect ratio to the image. Not sure if that's accurate, the original was posted as 16HP which seems too skinny.
Trying to get my pennies lined up to pre-order a kit ... it just gets better and better sounding the more you share the possibilities. Great, informative demo. Thanks!
I removed the draw for these modules as they're actually generating power not using it, got a bit confused when I suddenly had 5000mA more of +12V draw in my system when adding two of these ;)