https://www.elektronauts.com/t/roland-aira-compact-series-t-8-beat-j-6-chord-e-4-voice/172522/485
Posted this in the rolca thread. Anybody here have a Roland e-4 and used it with the op-1f?
Hi! I was wondering if somebody managed to use the iPad as midi thru from the Digitakt to the OP-1 field.
More specifically I am trying to launch the OP-1 by pushing play on the Digitakt:
I saw you question on OP forums too.
Holding Shift and Pressing 4 lets you select from different LFOs.
Of interest are two, Midi LFO and Element LFO.
Midi LFO allows midi CC numbers 1-4 to be assigned to parameters. In typical midi terms, 1 is usually modwheel, 2 is usually breath controller, 3 is generally undefined and 4 is usually foot controller. So by ensuring your breath controller is sending one of those numbers you can assign it to a parameter in the synth engine or the effect used.
Element LFO is what I mentioned before, the G source is the gyroscope / tilt sensor. The Mic source is whatever audio input youâve selected with shift+mic, and that is an envelope follower. So the internal mic or an external could modulate a parameter of the sound. Could be handy if you want expression and donât have your breath controller handy.
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Yeah, thanks, I responded over at the other forum. A lot less traffic there, but a breath controller/OP-1F question deserves its own thread and would be too niche for Elektronauts.
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Donât use aum, as it does not have transport or clock sync as slave. Drambo works great. So does audiobus or loopy pro. But i find Drambo best for this.
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Ok thank you for the input. However I prefer AUM but I will give Drambo a try. Do you know if Drambo supports midi thru in Bluetooth?
The issue I have is that I want to use midi Bluetooth and not usb as I already use the Digitakt as the usb audio device. If I plug the OP-1 field in usb it will take the usb audio instead of the Digitakt which is not what I want to achieve.
It does. But the OP-1 doesnât support clock over BT midi.
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But I just need to set same tempo and use send transport from drambo to OP-1?
Digitakt > midi send to Drambo > transport midi thru to OP-1
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That should work fine!
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Ok thanks I will try it out even if I prefer AUM as it makes midi mapping very easy
The way I do it, and this works great: Use a USB hub on your iPad to connect both the field and Digitakt while they are still turned off. Switch on the OP-1 first and wait a few seconds, then switch on the Digitakt. Only then load the template you make in Drambo for example. iPadOS will always use the last connected audio interface, and the template in Drambo will not loose connections, but you might have to (in Drambo) re-enable clock sync from the Digitakt and then enable MIDI sync in the tempo menu.
I personally use it the other way around. I sync the clock and transport from the field and pass it through drambo to the Syntakt. This eases recording to the OP-1 and I use drambo to sequence melodic content on the Syntakt, while for drums I mostly use the Elektron sequencer. It also enables polyphonic sequencing of Syntakt while using FX tricks on each of Syntakt sequencer tracks (momentary hold scenes). Not to mention, you can also sequence the field or any App on the ipad and use the three to compose and record loops or a full song on the OP-1 field, which (as you probably know) is a very fun tape recorder with live looping options and tape effects.
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Alright thanks a lot! I want the exact same workflow but with Digitakt as master as I like a lot the design and want to avoid touchscreen. I just want the iPad to be a paraphonic sounds sources that I sequence from DT. Then I record everything from DT to OP-1 field. The only missing element is to be able to sync the OP-1 with Digitakt. I think I can do that thanks to your method of plug-in the Digitakt after the OP-1. I will try to do so in AUM as I want the iPad to only be a mixer/sound sources.
I do avoid the touchscreen for transport 
My main midi transport is the field, which sends transport to drambo, which in turn starts transport on the Syntakt.
Regarding AUM, you will not be successful, at least in full, believe me, I have sent donations and countless emails to the developer to implement MIDI slave sync or even just transport slave would be enough, but his answer is always It is very hard to do properly. The last conversation I had with him, he said he is finally looking into it, that was last summer.
There is a way to partially achieve this by using an app like MIDI link which converts clock to ableton link messages, but the jitter and the way AUM counts bars makes it unusable for me. I would like nothing more than to just use AUM, but here we areâŚ
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Alright I trust you. Will try in Drambo then⌠even if I already did all my midi mapping in AUM
If you have any other apps that support MIDI slave sync, maybe try with those first if it is what you want. Donât know where you are located and what the laws are there, but in EU you can get a full re-fund on app store apps up to 14 days after purchase, so should not cause any loss if you get Drambo and it doesnât work for you.
No worries I already have Drambo and like it as standalone modular sequencer. Never tried to combine it with other gear as it looks more complicated than with AUM.
Try the MIDI to poly module for some polyphony (4 note) on Digitakt 
very easy to set-up.
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Looks interesting! I see that you are a specialist in making chords with devices that do not have directly this possibility (ST, and DT)
Sounds like you donât even need to sync the iPad in this case, if itâs just acting as a dumb synth.
Yes in general I donât sync it. It is just sequenced by DT
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