modularkomplex

Hi, got the boards today. Thank you for your work and efforts! regards, Mike

Hi, inspired by a post (in german) in the sequencer.de forum i've already planned to try something like this - when i have some spare-time. Actually planned is the use of signals from LFOs or other modular-CVs, but audio-triggers should be possible to. I do not plan to use a AIN module at all, but a little trigger-conditioner connected to a free DIN pin or J5. regards, Mike

Got my boards today. Thank you!!! Regards, Mike

Hi, i've also done a fitting lcd-window wich fits perfectly in the front-panel. Both made by Schaeffer. Cheers, Mike lcd-window mb6582.zip lcd-window mb6582.zip

Hey Sasha, very nice (and fast) build! Cheers, Mike

No, nothing else missed. Perhaps the one thing I missed, too: Space for stickers on the front to name the channels. It can be confusing with many connected slaves.

Nice design! But note, that with my code you'll need seperate (global) play- and pause-buttons (or need to modify the code).

Ah, i found it! Checking the J3 and J23, both SIDs work as expected. It was the audio-jack! The jack had no good connection to the pcb. Perhaps this is because i had first soldered other jacks and realized too late that these did not fit the back-panel. The unsoldering of these jack may have weaken the pcb-traces at this jack. I have bridged that with a short piece of wire from J23 to J22 and it works again. Many thanks to all of you who helped with your hints and ideas! Mike

:o Aaargh! Stop that! ::) That one PIC had problems from the beginning. No short. I stuffed another PIC in there, uploaded all the stuff and it worked like a charm. I changed the two PICs from core 1 and 2 yesterday, changed the ids, uploaded the app... but nothing changed, even both SIDs on the first core are working. I will check further this evening. Mike

Hey Stryd, i only do one thing at a time, i've put the faulty PIC aside to check it again later. So the only problem left is the one missing channel. I'm going to investigate (and hopefully fix) this further this evening. Tomorrow is the first public presentation of this little beast. Mike

Hi, i've tried it with the PIC again and again. But after uploading the sid-app its continuing with upload-requests. Anyway, i have a spare PIC now which runs fine. Someday i will try to reburn the PIC with the bootloader and investigate if it will work afterwards. But now i have a new problem: I'm getting no output from the second SID on core 2 anymore. I've swapped the SIDs and they are fine, same with the 74HC595. It had worked before, but the last two days i've only checked it mono and didn't notice that. Thank you again for all your help! Mike

Hi, Step 1: done - nothing changed Step 2: done - nothing changed Step 3: done - all fine Step 4: done - SUCCESS! Running fine! Thank you so much Wilba! Mike

I've reflown the solder-joints which connection the first PIC with the SIDs but no success. The strange thing with this proble is, that it does not happen all the time. Sometimes i power up the box and it works fine. But i have another issue where i dont know if its normal for the Midibox-sid or not (i think not): A scattering bassline. This happens more or less on all cores. With internal and external clock. Is this normal? I think slight differences in the length of notes might be normal for analog equipement, but so much? Mike

Ah, thank you Luke! I thought that could be an error, too. Mike

Hi, thank you for your response, here are some samples: Core 1: No Sequence running! Core 2: Same Bassline running fine Core 1: Drum-engine running with error All samples recorded contain only the left channel but the error is on both SIDs connected to the first core. Can't reproduce the garbled lead-sound at the moment. I can't do a video, sorry. But it is not so spectacular with the other bug, just all leds in the row and column of the sequences running are lighting up continously. Mike

Hi, i've just completed my mb-6582 (with 8 6582), yeah! First of all, many many thanks to TK and Wilba for their great work! But now to the problems i've got with this sweet box: 1. Sometimes a bassline on the first core gets crazy, there is a continuous bass, even when the sequence is not running. Depending on the sequence i can hear some notes running and i can change the sounding with eg. the filter-settings. This happens only on the first Core and with both SIDs. When this happens and i switch to the drum-engine, noise can be heard. Switching to the lead- or multi-engine leads to a garbled sound but when playing notes on the keyboard it sounds fine and the garbled sound goes away. Also, when i initialize a new bassline-patch the behavior gets normal for a while just to start again after some moments. Could this be a result of a bad soldering? A software-bug? Something else? 2. When running a (bassline- or drum-) sequence on any other core than core 1 the matrix-leds of the row and column corresponding to the sequences light up all the time. i can't see the sequence running like on the first core. What could that be? Mike

The boards arrived yesterday. Thanks for your work! Mike

Hi, I've built a Clockbox with a slightly changed hardware (4 additional buttons for menu handling) and changed / improved the software to met my requirements. As a starting point I've used the "clockbox_v1_1_w_divisor" provided by mess. This is my first project coded in C (and first time coding for a microcontroller), so please forgive me if some additions to the code are not best practice. Hints are welcome. General config: If you dont have the mentioned additional 4 buttons, you can set the define "MENU_BUTTONS" in main.h to "0" to keep the handling of mess' version. You could/should set "NUMBER_OF_SRIO" back to 3 then, also. Note: MULTI_CLOCK_OPTION is to "0" for security measures, set it back to "1" if multiple outs are used. Some words about the shuffle: Each shuffle-pattern consists of 12 bytes, each bit can be seen as a (virtual) tick in a 96ppqn-sheme. The 12 bytes represent a 1/4 note. If every 4th bit is set (binary 10001000 or 136 in decimal) you get a straight normal timing. Shifting the bits of the single bytes here and there brings up the wanted shuffling. When doing your own shuffle-pattern ensure that there should be exactly 24 set bits per pattern or it would run async. Compatibility note: At low bpm-settings and/or high divisions and/or some shuffle-patterns some seqencer may have problems to follow the clock and switch to internal clock-signal. I had this problem with a Electribe R-MKII and first thougt of a bug in my shuffle-function but on further inspection it was the fallback-function of the Electribe. Another tested sequencer, the MAM SQ16, didnt show this behavior. My changelog: Changed: Migrated to SDCC v2.7.0 Changed: Stripped MTC-code (As there were no changes to this branch, someone can use clockbox 1.1) Changed: Slave-Outs should not get a START- or STOP-Message when in inactive mode. Fixed: SONG-POSITION was not sent to slave-outs when master-play is activated. Changed: When a slave-out is activated, further play-button presses should not send START-Messages. Changed: When a slave-out is inactive, further stop-button presses should not send STOP-Messages. Changed: (De)activating of outputs when not in run-mode now possible. Changed: Reordered the screen-elements to get space for the menue. Added: Added a simple menu-structure using buttons on DIN-Pins 24-27. Changed: Stop-button works now as a shift-key to swap menu-pages with encoder; shift-pause is stop now. Changed: Menu is only shown when shift-key is pressed to save display-space. Changed: Resolution is set to 96ppqn, main out has fixed devision of 4, other outs are devided through shuffle. Added: Shuffle function implemented, 7 pattern + pattern 0 for no shuffle. (Menu: SFL) Added: Option to use old handling without additional buttons. Changed: Shift+Play on a certain slave-out selects this track for edit Added: Configure-option if an slave-out uses stop/start or stop/continue (Menu: SCS) Added: Configure-option if start/stop toggles on next bar or beat (Menu: BBC) Added: Configure-option if SONG-POSITION is sent to slave-outs on activation of this out (Menu: SPC) Changed: Shuffle and divisor-settings get active on next beat to prevent asyncronicity; direct, when not running Added: Save and load settings to/from eeprom. (4 patches each with 64 bytes (not fully used yet)) (Menu: SAV / LOA) Planned: Save and load config to/from bankstick and formatting bankstick (not working yet) I hope, someone can use this. Cheers, Mike clockbox_v1_5ekx.zip clockbox_v1_5ekx.zip

Got the knobs today. Very nice Knobs, thanks a lot!!! Mike

Are those plexi rings available anywhere or do you plan to get them from schaeffer? Mike

Nachdem Jürgen Haible in der Synth-DIY Mailingliste nach Tempco-Quellen gefragt hat, hab ich mal unter anderem auf dieses Topic hier verwiesen. Könnten sich also auch aus dieser Richtung noch Teilnehmer finden. gruß Mike

Moin zusammen, ich hatte vor ein paar Monaten eine Sammelbestellung bei Weltronic im sequencer.de Lötkunst-Forum angeleiert. Da haben diese Tempcos sogar noch ein bisschen mehr gekostet - also guter Preis, schlagt zu. (Und einen schönen Gruß an Frau Maier) Ich bin damals nicht davon ausgegangen, dass hier im Midibox-Forum interesse an Tempcos besteht, brauchts ja nicht für die Ucapps-Projekte. Zu der 3500ppm/3300ppm-Frage gibt es sehr viele Meinungen. Die Essenz: Die 3500er haben aber bei Zimmertemperatur eine Kompensation von annähernd 3350ppm. Sollte für die meisten Projekte passen. Zusätzlich besteht die Möglichkeit, wie hier beschrieben einen 62Ohm-Widerstand in Serie zu schalten und dann rechnerisch eine Kompensation von 3298,59ppm zu erhalten. Eine andere Frage, die bestimmt noch aufkommen wird ist 1K oder 2K. Einige Projekte benötigen 2K-Tempcos (ob jetzt 3300 oder 3500 lass ich hier mal ausser Acht). Hier besteht die Möglichkeit auch einen 1K-Tempco zu benutzen, wenn einige andere Widerstände des Expo-Converters wertmässig halbiert werden. Zu den THAT300/320 und einigen anderen THAT-Chips läuft übrigens im Lötkunst-Forum gerade eine Sammelbestellung: -> http://www.sequencer.de/synthesizer/viewtopic.php?t=15793&sid=193abe978f93a5040c6ff6b29101856b gruß Mike

Ganz unabhängig vom Display würd ich erstmal checken, ob beim Einschalten ein Upload-Request gesendet wird. Wär ja schonmal ein Lebenszeichen. gruß Mike

Hi, I've burned some PIC18F4685 using P18 without any problems. The 4682 should work, too. Mike

Bonusmeilen bzw. Provision gibts dafür leider nicht. gruß Mike Hier noch zwei Warenkörbe: SID-Modul (6581) SID-Modul (8580)