Hawkeye

Had the same problem once - with the 180° rotated cable. I doubt, you ruined your shift registers, mine got very hot and I did not realize it for a few minutes (drinking that coffee was more important! ;-)). I therefore suspect sth else, but I might be wrong, ofc :-). Suspection: Make sure, that Serial IN and Serial OUT (SI/SO) lines are not accidentally swapped. This could still happen, if the cable is built wrong. You can test to swap these lines (nothing bad can happen). A good test is to use a continuity tester / ohm meter to map the silkscreen printouts of J8/J9 with J1 on the SEQ CS. A few other tips: Check for voltages across the CS board. Every IC must be powered with 5V across its supply pins. Enable the SEQ Button test mode in the MIOS Terminal. Insert a few resistors and LEDs (no real need to solder), just add 9 220R Resistors at the center of the board around the center encoder slot and add just one LED above the first GP button - it should light up after booting. Attach your scope with the probe to the serial lines and (and probe gnd to gnd). You should see high-speed pulsed signals on J2 of the CS PCB (it is a serial extension of the inputs from J1 to attach other hardware, like the TPD board). Many greets and good luck! Peter

Hey, well built! :-) And glad you made some more important observations! You can re-use that LC-filter also in other projects, and as it seems, Altitude was right -> not enough current draw for the switcher :). More LEDs is always a good thing! ;-) Have a great weekend! Peter

Thanks, Shuriken! :-) Yes, it is true. One suddenly is awake at the strangest times of the day ;-) Never mind! Have a great time! Peter

Hola, it has been a while, but here is a new one, made during one of the recent sleepless nights! ;-) The MBSEQ is awesome for relaxation! Even if the track is probably rather mediocre due to lack of sleep and stuff, but anyways, these are happy days! :-) Thanks for watching and listening and have a great time! Peter

Genau! die 24V Maximum im Datenblatt übersteigen also weit die von MIDIbox verwendete Spannung, also passt das prima. Ich hab heute übrigens die oben gelinkten Taster bekommen - Versandzeit aus Polen 3 Tage, also echt schnell. Und die Dinger passen wie erwartet in Wilbas CS PCB, man muss nur auf der Rückseite mit dem Teppichmesser zwei Plastikbolzen (0.5mm) abschneiden, damit sie plan auf der Platine aufliegen. Das dauert pro Taster ca 10 Sekunden, ist also gar kein Problem! :-) Ciao und viele Grüße, Peter

Hm, looks noisy - we don't know the scope y-axis resolution, but anyways, but that noise might very well be the problem! It might be coupled with Altitudes minimum-current requirement observation, because the ripple may be more prominent, if not enough current is drawn. How long is the wire from the switcher to the core? Can you insert a cheap LC filter at the core end? Things necessary to build it: one big cap (2200uF) one small cap (100nF - 47uF) one ferrite core with at least three windings of the plus side of the cable through it. This should filter out the worst stuff - here is a DIY instruction: http://blog.oscarliang.net/lc-filter-fpv/ just add the small cap in parallel to the big cap, this further improves filtering performance. These filters have helped me a lot in other (non-music) applications, they really work and only cost a few cents and half an hour to try out. If you are interested, you can re-measure with your scope after installing the filter - should be lots better! :-) Many greets, Peter

Great job and thanks for sharing! :-) Many greets! Peter

Late to the party, but the BLM hardware and the demo are awesome! Very well done! :-D Many greets, Peter

Hola, danke! :-) Ja, wenn Du eh ein eigenes Case/Frontpanel baust, passen Schalter und Kappe! Wilba hat da übrigens auf seiner CS Platine weitere Schalteroptionen ermöglicht. Du musst also nicht unbedingt 12x12mm tactile switches nehmen, sondern es passen auch 6x6mm und evtl auch noch ein paar andere Formate! :-) Eine weitere Shopempfehlung neben Conrad und Reichelt ist tme.eu - die haben ein umfangreicheres Angebot, dieselben Versandkosten und sind gleichzeitig bei vielen Produkten deutlich billiger und haben keine sehr lange Lieferzeit. Ich hab dort gestern für einen neuen SEQ V4-Bau diese Schalter bestellt - unten auf der Seite findest Du passende Kappen dazu: http://www.tme.eu/en/details/b3f-4050/microswitches-tact-pcb/omron/ der Preis ist ca 3x billiger, was bei ca 60 Schaltern schon einen Unterschied macht und der Hersteller (Omron) ist eine gute Marke, das ist also durchaus eine Empfehlung! :-) (Dieser Schalter ist für 3 Mio Zyklen spezifiziert, sollte also für viele Jahre Spaß am SEQ V4 sorgen! :-)) Im selben Shop bekommst Du auch die fantastischen gelben 2x40 Zeichen OLEDs! :-) Ciao und ein schönes Wochenende! Peter

Hi Nico, you're welcome - maybe there is some solder residual somewhere sometimes bridging 5v and ground. And you are right, when there are strange hardware or software problems, I also always blame the weather! Hehehe! :-) Have a great weekend! Bye, Peter

Hi, Wenn Du ein Standard-Wilba-Frontpanel hast, passt diese Kappe leider nicht von den Abmessungen, da das Panel rechteckige Knopfauscchnitte hat, brauchst Du eine Tasterfläche von ca 11x5.5mm (Breite * Höhe), die hier ist quadratisch... Ciao und viele Grüße, Peter

Hi Nico, do you have an oscilloscope at hand for measuring the ripple? Without big filtering calculation you could try a 2200uF and a 47uF cap pair in parallel, sometimes it might already help. I use an open-frame psu from reichelt, too, for powering the SEQ, and there are no problems, but have no BLM installed. Inexpensive "UBEC"-type low-noise switching regulators from the model plane sector are an additional option: I use a common 12V unregulated wallwart and one of these to power the MBProgramma with 24 OLEDs and 1024 LEDs : http://rctimer.com/product-160.html :-) Many greets, Peter

Wow, great work! :-) This technology breakthrough (and the affordable price for the LED strip) really kind of asks for a MIDI-IN based lightshow device :). E.g. listening on the end of a few MIDI-thru chains of synthesizers, visualizing the Note On/Off events of the different MIDI ports/channels with some Blinkenlights, while otherwise providing a hue-controllable moody ambient lighting for the synths that can slightly flash to the beat :-) Many greets! Peter

Thanks for the offer, man! I cannot afford to invest the time currently, there is something personal going on, that i cannot reveal for the moment :). Which probably means, that I will likely bother you in a few months, when all PCBs/cases are gone for good and no other bulk is planned :) Hehe! :) Have a great weekend! Peter

Addendum: if you want full unquantized recording (but yet without any of the great functions, the SEQ has), you might give the MBLoopA a try: Altitude wanted to create a PCB for it, if there is enough demand, and I really want to extend the firmware a little bit for more functionality (and not just voxel bling :-)) Many greets, Peter

I can confirm, that TK. has comitted himself to a healthier lifestyle! :-) Hehe! Many greets, Peter

Thanks, man! :) I know, i still need your BLM to achieve fulfillment! :) Many greets! Peter

Yo folks, not lotsa time to spare at the moment, but some keyboard time is necessary after work :). Also as promised long ago, here is finally the successor of "Hill Diver part one" :). Hope you like it and as always: thanks for watching and listening! :-) Many greets, Peter

looking good! (+ less drilling on the frontpanel :))

Hi! for shorter tracks, this already works by increasing the resolution (more steps, different divider) - this allows slight offbeat notes on "wrong" steps. E.g. you could bump up a 16-step track to 256 steps and then have 1/16th step "human" errors. These can either be recorded live from the keyboard, or be "scrolled" on demand. The next version (on the STM32F4) might even support more steps per track (512 or 1024? :-)), which will help even more. Also have a look at the Humanization MIDI effect, that adds random glitches to different parameters. Many greets, Peter

Jo, die Bilder in der Gallery sind zwar im System vorhanden, aber es wurden wohl keine skalierten Bilder in der richtigen Größe ausgerechnet. Bei den eigenen Bildern kann man einmal nach links rotieren und einmal rechts rotieren, um das Problem zu beheben, ist aber unschön, da JPG lossy ist, daher Bildqualität verloren geht und es etwas Arbeit macht! :-). Die Umlaute der alten Postings sollte man mit einem kleinen Konverterskript eigentlich in den Griff bekommen können... Ciao und viele Grüße, Peter

Hi, it is just the image loader (bitmap, .bmp file format ;-)) from SD-card. Envelopes should be rendered graphically on the small OLEDs and updated as envelope parameters change (e.g. attack, decay...). Odroid looks nice and sure can help to use achieve something similar with Lemur, personally I don't love touch panel faders and sliders too much, because you get no haptic feedback, but of course it offers awesome functionality! Many greets, Peter