Kvantisoija Helvetistä 4x Quantizer with Sample Hold

No stupid questions! We're all learning all the time! If the mixer is powered by 5v it can only ever reach as high as 5v so no problem there. But if the mixer is powered by 12v for example there is the possibility to damage the Arduino. In AE world all signals are 0 to 5 volts, which the Arduino is happy to handle. When Arduino pins are configured as inputs we consider them to have near infinite impedance, so no additional current limiting is required as no current will flow to the Arduino anyway. 

If however you had some other equipment which can produce higher than 5v or lower than 0v you must use the protection diodes to clip the signal down to the 0-5v range. 

Since the DAC chip is powered by the AE's 5v, it can only ever reach 0-5v and is safe to patch into the rest of the system!

You're welcome! If you'd like to learn more I highly recommend playing with an online circuit simulator called Falstad. Much cheaper to blow up capacitors and op amps on there than in reality!

For example here is a filter designed by Moritz Klein which is fun to play with and lets you see how the circuit works!

Hi Robert thanks for your wonderful creation! I've thought about posting my diy modular here for a while, but it feels somewhat "dirty" since it doesn't contain any AE yet. Perhaps I should, it is very much in the spirit of AE! I do also have ideas for a few modules that I would like to share as well. One I hope to have up and running soon is another Arduino based project for a timing quantizer that can turn chaotic signals into clocked gates and triggers. Also some analog circuits, though I really need to sit down with those designs and hammer them down into something that will fit in the much smaller AE case, as my DIY modules are much bigger.

And yes, it's a shame about the parts shortage with no end in sight! I got one of the last MCP4728 ICs from Tayda and melted it   oops! Sorry little chip! Not wanting to give up on the nearly finished project at that point I got a breakout board from Adafruit. Perhaps they can work out a deal to provide you some chips at a lower rate? 

If you have any thoughts about it I'd be curious to hear! I'm still early in the planning phases but currently I'm thinking something that will take in a fast clock (call it 16th notes) and any other signal that crosses the Arduino's logic level (below 1v low, above 3v high) that can be out of time. It would then hold high values until a clock pulse is detected, when it outputs a gate or trigger. As it is that's basically a sample and hold, so to further push into the realm of quantizer I'd like to add some functionality that accepts or rejects clock inputs analogous to how a pitch quantizer accepts or rejects notes from the chromatic scale to produce musical modes. Hopefully that makes sense! 

Currently I'm trying to decide on the most important aspect of any module for it - the interface! How do we want to tell this device which clock pulses should be accepted or rejected? One obvious choice would be a predetermined list of groovy rhythms, just like the pitch quantizer has, but I feel this would be very limiting. Could also have an array of latching switches for steps ala a gate sequencer, but again I feel there's some other implementation that could allow greater flexibility. 

At any rate it's now would be the time to get in feature requests! 

someone enquired (either here or on the discord) about the possibility of an RBSS add-on in the style of Turing Machine's 'Pulses' expander - which i think is kind of along the same lines as this idea?

digikey.ca lists 0 stock on these.
Mouser.ca says "on order".

So here in Canada, yes tough to get.

Does anyone know if the Daisy Seed has high quality DACs built into the microcontroller?

www.electro-smith.com/daisy/daisy