Hawkeye

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Everything posted by Hawkeye

  1. midiphy Eurorack Expander Modules

    @Dimduj can't exactly tell the absolute values, but we performed an "ear-based" tracking test together with TK. - while we've not got the "youngest ears :)", still to us there was no audible pitch difference between a MIDI controlled digital oscillator to a eurorack CV controlled analog oscillator over many octaves tested. So, i think 15-20 cent note variation sounds high and should be audible when listened to closely. We've not yet performed exact measurements (other than those with a DMM) and just can tell what we heard :). There might be two pitfalls that cause imprecision: a) Calibration with a DMM, that was not very precise. b) The analog VCO used as a eurorack module is itself not tracking perfectly, even if supplied with the correct control voltage. If you calibrated with a good digital multimeter, after calibration, the SEQ should reliably output the "CV" of every octave with a precision of about two millivolts, that's at least what i was able to reproduce when measuring with the DMM. In my super rough :) calculations, if an octave spans over 1000mV, assuming linearity between notes (which is not the case), each semitone of an octave would have about 83mV of "range". Now, if the DAC achieves an output voltage result that is within the range of say +/- 2 mV for every note, the "error" would be within the range of 2/83 or about 2 cent instead of 15-20. That is assuming the conditions a) (good DMM) and b) (good VCO) are met. More questions regarding your calibration process: a) did you have to enter high values to trim the actual DAC output voltages of every octave to get close to every octave's target voltage? I remember not having used correction offsets of values > 20 per octave during the calibration process. If you needed high values there, this would indicate the DAC would loose a bit of its 12bit output precision, as the SEQ would have to do some more internal interpolation to reach the voltage targets. b) are all of your CV channels behaving similarly? The DAC channels might have slight performance differences. c) Can you configure a SEQ track to use a CV out channel, then play all of the C notes over many octaves (in SEQ live forwarding mode) and measure again the outputs with your DMM? Are these DMM readings close to the target -4.000V, -3.000V, ... +5.000V volts? This would be a double check outside the calibration menu.  Have a nice weekend! Best regards, Peter  
  2. midiphy SEQ v4+

    @mcmurray has completed his unit - just for the sake of completenesss in this thread, i've copied his post over to this thread - the original was in the SEQ v4+ Troubleshooting thread: Well done, #29! Many greets, Peter
  3. midiphy SEQ v4+

    @Adam Schabtach i did some tests of the acceleration feature when the v4+ was released and just tested again. In short words: it works in the v4+ as it worked before on the v4 - that's also the behaviour people are used to by now. A bit of historic context - please correct me, if i am wrong - back in the olden MIOS8 days, TK. developed the MBSID application which performs automatic encoder acceleration based on the speed the encoder is turned - slow turning speed = no acceleration, quick turning speed = active acceleration. That's the only way to enter the many different levels of e.g. the SID filter cutoff value ranging from 0x000 - 0xFFF = 12 bits of resolution. Thus you could fine-tune the filter cutoff by slowly turning the filter knob, and quickly change it by quickly turning it - a method that works really nicely. The MB6582 encoder as the v4+ encoders also "only" has 24 pulses per 360° turn, so not many pulses available to adjust a high-res 14-bit value. From this behaviour, the MBSEQ encoder acceleration (which was also available first on an 8-bit platform) was derived. It might have also been the other way around, MBSEQ 8-bit first, then MBSID :). Anyways - the acceleration even nowadays is only active, if you turn the encoder quickly. Now to describe, what FAST does: it changes the speed of acceleration. If you do this experiment: quickly turn a SEQ v4+ encoder changing a note value by a half turn, starting from a low value note, e.g. C-1. Doing this, i get to D#2. Now repeat the process but push the knob down while doing it, now i get from C-1 to C#3, the FAST button LED is also backlit when doing the latter. You can fine-tune the speed when accelerated in the HWCFG as Andy described. E.g. for a more prominent effect, it might be good to tune to something like ENC_GP_FAST_SPEED 7 Still you need to push down the knob and turn quickly for acceleration to be effective. Sorry for this long description, but i think a bit of historic context helps to understand why this function works as it does :). Best regards, Peter
  4. SEQ Workflow w/other gear

    Good poll! Here's my somewhat limited workflow, as much more is possible with the SEQ: a) i use the SEQ primarily as an aggregator for all MIDI hardware gear (in conjunction with MIDI THRUs on the output side). Like this, it's possible to drive something like 30 synths via the built-in 8 MIDI OUTs with really low latency (just a single THRU module used on every OUT port) and perfect MIDIbox microcontroller timing :). b) All of this connectivity in one place allows for the SEQ to be a router between most gear, am often using it with the "Live/Forward mode" and track selection just for jamming - this gives instant access to ~16 selected synths just by switching the active track in the SEQ - no recording required up to this point :). The MIDI router additionally helps to statically connect everything else, i.e. to permanently forward an external MIDI drum pad to a sampler. And it forwards the LoopA output to the respective synths :). c) many drum machines have an internal sequencer that are optimized for drums - i.e. my Machinedrum syncs great to the SEQ, there would be no need to spend a SEQ track or use the SEQs internal sequencing for it (only if you'd like to use advanced features like euclidean drum sequence generation :)). Having the option to physically disconnect the Machinedrum is good, so you could just use that on it's own, e.g. to generate new drum pattern ideas on the couch :). d) arps: mostly recorded manually in step progression recording mode - i.e. have the seq automatically increase the track position by 4 steps after each recorded note, then you can easily enter the arpeggio (or variation) by hand. e) have not yet used the song mode - for me, it's mostly muting and unmuting tracks, transpositions and sometimes pattern replacements on the fly - that is more than enough for my limited music :). Best regards and have fun! Peter
  5. Fractal Floater

    @jojjelito Thanks a lot, J! Hope you're good and staying away from that darn virus - addressing the soldering backlog sounds like a great plan! :-) Many greets to Sweden! Best regards, Peter
  6. Fractal Floater

    Back in time, when we were surfing the skies... It sure has been a while, but here is a new track :) - sequenced with just six polyphonic tracks of a single LoopA: Hope you enjoy! Stay creative and have a nice weekend! Peter
  7. Transport controls

    MIDI beat clock and start/stop are of course supported, just use these standard messages: https://en.wikipedia.org/wiki/MIDI_beat_clock You need to enable listening to MIDI Clock on specific ports, otherwise it won't work - it's the same for the LoopA. :) Best regards, Peter
  8. Amazona.de-Review

    @mfk really, no need to be afraid of it - you can easily do the large scale 1206 SMT soldering! In fact, the solder pads for resistors and caps to me seem to be bigger than those for the classic THT components. And there's no need to turn around the PCB all the time and to cut pins. As a bonus, you can store a whole assortment of SMT resistors and caps in really small boxes and don't need much storage space for them - also, with the drag soldering method (shown e.g. in the LoopA video tutorial), installing ICs is really very simple and super quick. We've even had a few requests of builders recommending us to get rid of the THT resistors in future PCB revisions, as cutting their legs was slowing down their assembly! :) It probably won't happen, as Andy often uses them as "bridges" over traces, i.e. the classic resistors then offer another layer to the PCB which simplifies routing. Have a good day and many greets! Peter
  9. Amazona.de-Review

    Yes, that's very nicely written! Many thanks to Robert! Many greets, Peter
  10. Troubleshooting midiphy SEQ v4+

    Cheers, @manu, glad that it is sorted out now, hope you enjoy your new sequencer! We're already working hard on the ultimate user interface extension for it! :-) Best regards, Peter
  11. Interstellar Subway

    That's a cool & uplifting retrowave song, @m00dawg - cool to hear a new track from you! Many greets and stay creative! :) Peter
  12. @kelsfein Maybe you'd like to have a look at at the midiphy shop? https://www.midiphy.com/en/shop-details/137/48/midibox-seq-v4-rh-full-essential-kit https://www.midiphy.com/en/shop-details/137/47/midibox-seq-v4-lh-full-essential-kit There are full essential kits of both variants of the new SEQ v4+ in stock, including cases. Shipping to the U.K. is still possible even in the interesting times right now. You'd only need one more additional order of common parts from mouser (there's a bill-of-materials copy & paste tool to simplify the process) on the pages. Have a good day and many greets! Peter
  13. Fractal Floater

    Thanks a lot for your nice words, @m00dawg and @Antichambre! Regarding drone flying - it's absolutely true regarding the security issues - the problem was not when it was a completely new thing - people built their drones and wrote or modified their software (we had return-to-home systems, that engaged in case of video or control link loss). We also had spotters checking the surrounding airspace for obstacles like helicopters and we were able to fly back the bigger wings using line-of-sight standard RC flying. Those "pioneer" people were usually knowledgeable and very risk aversive - the problem began, when this technology was pushed to the mainstream. Then everyone and their grandma went drone flying everywhere (not in deserted mountains, but also in cities, near airports and so on) and that lead to massive problems and the necessity for these laws. While i was an enthusiast back then, i had my fair share of copters (never wings) falling out of the skies, so yes, it is a risk problem flying over people, a motor speed controller can fail at any time... Also, the public perception of drones has massively changed - when i made my first copter flights with a firmware that used hacked "nintendo wii accellerometers" many years back, people were fascinated and asked what was going on. At the end of the era, most people were not amused anymore, probably as too many people were flying. Doing it commercially now can probably be a stressful job. But, i still miss the ultimate freedom of wing surfing the mountains from time to time, thus the nostalgic tune :). Have a good new week start and many greets! Peter
  14. BLM 16x16+X build guide

    Thanks, @xarolium, @latigid on already completed the boards - we're now working on the case and the software. Many greets! Peter
  15. Fractal Floater

    Thanks a lot, Mike! :) Yes, back then, five years ago, it was flying with a fellow human wingman, it was the ultimate freedom. We had video goggles and spotters that watched the airspace for safety. Due to changed drone laws (and i fully agree with them), it is impossible to do now. So there was a small window of opportunity to do it as shown, and that window has closed now, maybe that was one of the last of my wing clips in the Alps :). Have a good sunday, enjoy the nice weather in the garden and be careful with that machete! :) Many greets, Peter    
  16. No more https?

    @Keeze you're right it has not been set up yet and that may lead to warnings in browsers and google downranking the site - @TK. could probably implement a free SSL certificate solution like letsencrypt - it works nicely! Thanks for your report! Many greets, Peter
  17. BLM 16x16+X build guide

    something is brewing in the lab - we're currently working on it! :) Many greets, Peter
  18. AOUT CV pitch- seqV4

    You could transpose down?
  19. A LoopA firmware update with quite a few enhancements is now available for download. New features: * Now supporting 256, 512 and 1024 step-equivalent clip lengths (previous limit was 128) - you can now create clips with loop lengths of minutes . * Improved display responsiveness/refresh rate, if the LoopA core is not under load * Improved initial BPM/timing stability, just after a sequence was started * Added customizable footswitch functions: choose any two of eleven new footswitch actions! * The new "Cursor Erase" footswitch action overwrites clip notes under the time cursor, this allows for live re-recording of new notes while the sequencer is running * The new "Jump To Precount" footswitch action allows jumping to a count-in point of a sequence, simplifying re-recording of a clip * New option "Track Switch": when enabled, "long-pressing" a mute key directly switches to that track * New Option "Tempo Up/Down": Configurable BPM delta speed (faster/slower buttons), perform linear BPM fades in five preconfigured speeds * New Option "Follow Track": automatic track following when muting/unmuting, can be set to "disabled"/"when unmuting"/"when muting or unmuting" * New Option "LED Notes": visualizes played notes via temporarily red illuminated track buttons in the MUTE screen - when the sequencer is running, this indicates which track is actively playing notes Hope you enjoy! https://www.midiphy.com/en/loopa-v2/ Many greets, Peter
  20. Hola,  (some edits made in Nov 2019 on launchday :) after about three four years in the pipeline, we are proud to announce the LoopA v2. Thanks to Andy, there are now PCBs - and we have also finished a DIY acrylic case. It is now publicly available in two variants, a caseless/barebones variant, and an acrylic case variant, over at the webshop on midiphy.com: https://www.midiphy.com/en/shop-details/139/69/caseless-loopa-essential-kit https://www.midiphy.com/en/shop-details/139/65/loopa-acrylic-case-essential-kit Also, Adrian Hallik from Hallik Engineering is working on a new metal case, which should be available in early 2020. You can easily transplant the caseless LoopA in any case. The LoopA will definitely not be a total beginner DIY project, as some SMD soldering and somewhat precise board interconnection work is needed, but a BOM and a full documentation about the build process are now released, so it should be doable :-). On the plus side you will receive a very compact unit (only 39mm height packing three stacked PCBs), a lot of MIDI interface functionality and a very responsive system that is designed to be "easy to use" and inspirational. Like not starting up your DAW and updating drivers but just sitting at your favourite synth and hacking in some lines! :) Here are the main features: * six polynote tracks linked to individual MIDI configurations * six scenes, allowing for a total of 36 in-memory MIDI clips * graphical note display on an OLED, that shows clip notes and also edit changes like transposition in realtime * four MIDI OUT ports, two MIDI IN ports, one OUT port is configured as an optional BLM expansion port (later) * non-step sequenced recording, clips can be dynamically requantized during live sessions * note-editor for fixing recording errors * transposition, scrolling and time-scaling of clips * disk operations (full recall), storage to SD card * BPM setting and MIDI sync from "upchain" devices like a master MBSEQ (and many more, see second section in the handbook) Here is a link to the user manual/the handbook: https://www.midiphy.com/files/468/midiphy_LoopA_manual_v205.pdf Here is a link to the current firmware - Version 2.05: https://www.midiphy.com/files/31d/LoopA_firmware_v205.zip Here are some photo session shots of the final unit in the case: Here is the final build video tutorial: Here is the "launch party" video showing a few features in a live context: And here is an introduction and "basic features" video:   In this thread, we will also inform you about software updates (a few new features are planned in addition to what is already available) - if you want to give us some feedback, or have feature requests, please post them here. But: we might not implement everything, as the idea is to keep the functionality really "slim" for easy use - for everything else there is the bigger brother, the MBSEQ! :) BIG THANKS to TK. and Andy, it would have been impossible to do it without you guys! Many greets, Peter  
  21. LoopA front view :)

    From the album LoopA

    a new LoopA firmware with many enhancements is now available! Enjoy! :) https://www.midiphy.com/en/loopa-v2/ Many greets, Peter
  22. midiphy SEQ v4+

    Cheers, very nice progress @chnuk and @momelq ! Hope you will have lots of fun with your new v4+s - they are awesome! :) Many greets, Peter
  23. Sync issue when switching patterns

    @gotkovsky good that you could reproduce and document it, hopefully @TK. could have a look at it - if not, you could repost the .zip and the video in the main SEQ v4/v4+ dev and feedback thread over here: ? Many greets! Peter
  24. MB-6582 Issues with MIDI and Audio

    @dwestbury Hmm, it's a puzzle indeed - did you by chance install the overdrive/feedback potentiometer mods on all engines already? If so, could you disconnect them and test again? Good luck and many greets, Peter
  25. CC-Looper (4ch controlchange looper)

    Good job and cool visualization with the mini LEDs! Many greets, Peter