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Anyone using the iPad to control actual modular CV/Gate?
I just got a Motu M4 so I can experiment with the DC-coupled outputs. I haven't really look into how to actually use it, yet, so I figured I'd start here. Are there any apps that will let me send out modular messages from the M4?
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Sure, Drambo. Drambo's 0 to 1 range will map to full scale on the interface. You need to be careful with pitch because Drambo uses 0.125 for an octave; you may need to multiply by 0.8 before output to get 1 V/octave. Remember, they're not "messages", only signals, so each output is just one CV or gate signal going to a specific modular input.
I do, but I use it with a combination of octex MIDI to CV converter, as well as the built in ones in my cre8audio case.
I’m thinking an expert sleepers es8 will be my next big purchase as it’ll really expand capability without taking up too much room in the car, or (relatively speaking) shillings to buy…plus it’ll go straight in and out of mirack/VCV/drambo with no MIDI in the way…
https://apps.apple.com/de/app/covariant/id1499681559?l=en
Although it somewhat focuses on using it with expert sleepers interfaces, the midi to cv, clock and triggers AUV3 will work with any dc coupled interface
I’m in the same position, have an M4 and want to experiment with CV outputs to hardware, so am watching this thread with interest.
One thing I have figured out is that you need cables wired correctly. The 1/4” jack outputs on the MOTU are balanced, so you need cables with a TRS plug on that end which have the ring disconnected. This is in the manual somewhere, so a) apologies if this is old news, and b) double check the wiring, as I’m going off memory as I type.
Thonk sell cables already wired up for this (I’m on the brink of ordering a couple): https://www.thonk.co.uk/shop/floating-ring-cable-14m/
The thing I’m stuck on is how to route things on the iPad. Do I just feed (for example) a MiRack CV out as audio to the relevant MOTU output using AUM?
I've been doing this with great results from Mirack, sending through the M4 on channels 3 and 4. I am using regular 1/4 to 1/8 TS cables, not a "floating ring" type which I still have to purchase. According to the manual, not floating the ring will cause distortion and according to Sound on Sound it will send only the positive half of the signal. I haven't tested this accurately since I've been mostly using it to send random signals and gates, and it works well enough. I don't think anything will be fried in doing so. Makes a pretty seamless hybrid setup, except that the MOTU's inputs are not DC coupled, so you can't send CV back into the iPad for further processing.
Same position as the rest. I also have an M4 and want to try out some modular madness with iOS.
I have CoVariant, but have yet to try it. Not sure what it all does, but it is AUv3, which should be useful. There is also CV Mod, which I thought I was using correctly. I was trying to do an LFO with it. I bought a 1/4" TS to 1/8" TS cable thinking it was the right cable. However, looking at the CoVariant manual, the developer mentions you need the floating ring TRS cable to get things to work correctly. Not sure what happens if you have the wrong cable other than the R channel being connected to ground. The LFO sounded normal I think. Maybe not?
There is also CVquencer (not AUv3) that is a step sequencer that sends CV. Same dev as CoVariant.
Perfect Circuit sells a similar cable to what was posted above.
https://www.perfectcircuit.com/expert-sleepers-fr-200-1-4-trs-to-3-5mm-ts-cable.html
I think you have it correctly. Use AUM > create a channel > select one of the outputs to send CV. If you're using the M4 for mix monitoring then I'd think you'd get 2 channels (3 and 4) at best to send CV.
Just tried the new cables from Thonk this afternoon. I got two, as you’re correct, I only have 3 and 4 available for this, as 1 and 2 are in use for L+R audio out. They work well with MiRack CV routed out, on a brief test. Sent two different LFOs out to my Moogs (I have the sound studio 3 bundle) and it just worked as I’d hoped.
So, not quite an Expert Sleepers rig, but with a combination of MIDI CCs (some of which the Subharmonicon will use) and two channels of CV from MiRack this is making for a nice little hybrid setup. I can just use MIDI clock from AUM for syncing the Mother, and clock the SubH and DFAM from that.
Fun!