Hawkeye

Nevermind the upload :smile: - The 8-bit display lines are just for users wanting to connect their displays not in 4-bit mode, but in 8-bit mode (using 8 data lines for character transmission). In that case you will have to bridge a few SMD-type looking solder pads. It is neither better nor worse than the 4-bit display connection method, just different. You might need it, if you want to connect more exotic displays like certain OLEDs (all standard LCDs will work without touching these pads). Many greets, Peter EDIT: The OLED you linked sure looks nice, and users have succeeded getting it to work (search the forums), but it may not work out of the box. Recommend to get a 4x20 LCD for the start instead.

Welcome back, man! Great, that you continue! :-). Building that MB6582 PSU is a good idea! Many greets, Peter

Should be possible with a good high-powered desoldering vaccum pump and an iron set to mild temperatures (don´t heat up a pin for more than a few seconds, then vacuum it, repeat..., it may be a lenghty process). Which C64 model had the SIDs soldered to its mainboard? Many greets, Peter

latigid on: sounds good to me! :) I always wondered where those bridges would be! :)

Hola, no SMD components are used - you might see those "vias" that connect the front side of the PCB to its backside? The extension connector can be harvested from old mainboards, it is a 25 pin d-sub connection. Here is more info: Something like this should fit: http://www.mouser.de/ProductDetail/FCI/10090096-P254VLF/?qs=sGAEpiMZZMuCYX%2f97lp%252bMZ3V8t1lQ4ilLkr2kYy4gmE%3d Enjoy the build and many greets! Peter

Hola, guter Plan! V4 ist genial (war aber V3 vermutlich auch schon)! :-) Ich würd sagen Du solltest folgendes noch zur Einkaufsliste dazupacken: Quad IIC Modul (oder vier einzelne IIC Module) für +4 MIDI Outs (4 OUTs in den 2 MIDI_IOs vorhanden, aber da Du 6-8 willst...) und ein paar DINx4 Module - je nach Anzahl der Taster, aber mindestens zwei. Hier noch ein Link zum Bau meines SEQs mit non-Wilba Frontpanel - vielleicht ists hilfreich! :-) Ciao und viele Grüße! Peter

You can safely test the other C64 - the power supplies are identical. Be aware, that the 6581 needs 12V though (and you just cannot swap the SID chips between different C64 models). Many greets, Peter

It might have broken filters, but it would also be possible, that your C64 has some problems on the audio output circuit. Do you have a fully working 8580, that sounds good in your C64? Many greets, Peter

Awesome performance, really good! I could never use my voice in a music production, it would sound like crap!! :-D Keep it up, man! Many greets, Peter

Thanks, JR! :-) (that track was recently featured on Synthtopia, so I am a happy parker, now! :-) http://www.synthtopia.com/content/2014/09/28/hawkeye-far-out/) Many greets, Peter

Yes, that is possible, you can connect the quad midi iic board to the J4A IIC port and still use one MBHP_MIDI_IO module to gain two base MIDI INs/OUTs (connect this board to J11E). (I´ve 3 base MIDI outs on an old STM32 board SEQV4, and 4 IIC outs, it is great, so many MIDI cables! :-)) Many greets, Peter

No problem! :smile: Yes, starting with the core is a good plan - here is the updated documentation: http://ucapps.de/mbhp_core_stm32f4.html You can also already order two 2x 40 character displays and install the MBSEQ app on the core and test it in MIOS Studio. All of that will take some time anyways, so it can be done now. Many greets, Peter

Hi, merkwürdige Geschichte! :) Hast Du mal getestet, ob der Akai Mpx16 nicht ein "eingangsseitiges" MIDI-Latenzproblem hat? Ansonsten könntest Du, wenn Du ein paar MIDI Ports am SEQ frei hast mal folgendes "loopback" Routing mit einem kurzen Midikabel für die Volcas Probieren -> SEQ MIDI OUT -> SEQ MIDI IN. SEQ MIDI IN -> Analog Trigger, dann wird sowohl der Akai als auch die Korgs über MIDI transportiert, was die gleiche Latenz durch die serielle Kommunikation verursachen sollte. Ciao und viele Grüße! Peter

Go for STM32F4, yes! This will enable you to upgrade to the SEQV4+, when it is ready. All MIDIbox admins have day time jobs (TK, SmashTV, ...). All they are doing for us is a big gift, so best to stay chilled all the time - best things take time! :) Many greets, Peter

Tim aka SmashTv will restock them later on in the shop. Stay tuned! :-) Many greets, Peter

Thanks, man! :) This build still needs some acrylics frontpanels, but I was too scared to order them yet, there is lots of room for mistakes, because the layout is a bit chaotic :-) Many greets! Peter

Recently, I used these http://www.mouser.de/ProductDetail/3M-Electronic-Solutions-Division/SD-RSMT-2-MQ/?qs=1Dv50y8t490imlwVQJuy5w== and they work fine (SMD/SMT, but easy to do it)! By the way, TK. updated the documentation, great work! :smile: Many greets, Peter

Hmmm, as long as you install the Optrex display so, that Pin 1/2 are plugged into the pins connected with your wires, all should be well (Shuriken: the whole display pin connection is moved by one step) - did not know that Optrex speciality pinout! No need to remove the second ground wire, but no harm uninstalling it, as it is connected to ground already (see the PCB in your last dropbox upload). Many greets, Peter

Hm, why was that display mod necessary? No backlight otherwise? Don´t know the sammiches, but this looks strange to me :) Could you remove the wires for a test? Many greets, Peter

Just wanted to report back - received the parts today - all is well, thanks for super quick shipping, man! :-) To the other readers: this is the chance to get an inexpensive panel for your MBSID/MBSEQV4L projects! :) Hehe! Have a great day, Many greets, Peter

+1 on ilmenators comments! Go plastic, man! :-) Wire diameter is only important when drawing lots of amps, for example AWG 16 (1,29mm copper diameter, 1,305mm² wire surface area) is easily good enough for 15Amps, which are never reached in synth applications (excluding amps ;-)). Have a great weekend! Peter

Hola SpaceFire, it should work out of the box with no big changes (when comparing to a standard single-color backlit lcd) - but provides more voltage/current input pins - common Cathode is "R" (exactly the same as for a 16-pin standard display), but then there are additional "G" and "B" pins. If you don´t want to do fancy mixing and can live with standard colors (red, green or blue), no big changes are necessary. You might need a currrent limiting resistor, though. You could make the cathode cable pluggable, so you can change between the three base colors at first. And later on add a fancy pwm mixing circuit (which is surely also available on adafruit or from china)! :smile: Many greets, Peter

Thanks a bunch, folks! :clover: J: Please do produce and upload a video/audiotrack, want to hear! :-) Enjoy the weekend! Many greets, Peter

Hola, long time no other music posts here, sorry for spamming the forum, I hope you post some other music soon, before I get banned! ;-) Anyways, had a small live session last night, featuring the fantastic MBSEQ V4 (can´t wait for the mbseqv4 plus model, yeah, more notes per track! :smile:). For me, this workflow is fantastic, impossible to do this in software with any DAW (tried some), so many thanks to TK., who made all of this possible! Also many thanks to J, who constantly provides me with new hardware recommendations, for example the DIY Polivoks filter was his tip - and it is a blast (easy to build, cheap and sounds fantastic, e.g. on basslines or on the SID sounds)! Well now, enough talk, thanks for listening and watching, hope you enjoy the summer! Many greets, Peter