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About gerald.wert

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    MIDIbox Addict

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  • Gender Male
  • Location Pitttsboro NC USA
  1. n00b question before etching

    You might be interested in these two files. They are what I used. The Swin sid board is interesting. You may prefer it over building a sid. It does not have the filter bug, has additional voices, custom wave forms and for what sid chips are selling for you can build it as a double sid for less then the cost of 1 sid chip or commodore 64. You also have a much simpler single voltage power supply to think about.  The advantages of 2 sids in one box are many here are just a few ideas: stereo, multiple voices, detune for fatter sounds... bankstick edits fliped[1].pdf SWiNX22MC resized and updated[1].pdf
  2. mnmlCore

    Just a thought but if redesigning the core would it be worth it to consider a newer processor? There is a lot of newer technology out there now. I understand the reason not to as there is software dev involved.
  3. Standalone_TPD.jpeg

    Thanks for the details. It looks really great. I have one built and working and will be getting access to a shop bot in a few weeks to make the panel and case.
  4. Standalone_TPD.jpeg

    Looks great is that a thin sheet of blue plexi over the clear plexi?
  5. Harmonic Table Matrix

    You can prototype with just 1 din and 1 dout. Once you have the basic idea up and running you can add to it. Much faster to start with something small and then build on your successes. There is even a matrix pcb that you could bread board a few tact switches for very little $ and have a test environment up and running very quickly. Maybe even a day or two...   The only other part you would need is the core and core PCB:   Good luck with it looks fun!
  6. Harmonic Table Matrix

    It looks like you would need 3 Dout in the above diagram or you are not going to have the button count you want. The way it is drawn you will have 3 sets of duplicate buttons. That does not sound like what you want. You could split the lines like you show for the velocity section if you feel you will never want to know velocity if you are hitting the same notes in multiple sections at the same time. This use case for scanning all 3 sections would come up if you were playing cords, slides and if you were playing a bass section and a melody on the other hand. There are likely other use cases if you consider things too. Splitting lines really does not make sense from a design perspective though as the CMOS cost is very low compared to button cost. If you are wanting to reduce components or costs it might make more sense to only start with one section and have an octave button and design with a modular approach where you can add sections if and when needed or wanted. Antichambre is basically saying the same above, hope this is giving you some other thoughts and hints around his initial "Why" question.
  7. WTB: SEQ v4

    The beast case is way better quality. It would be worth your time to contact him to see if he can put together the rest of the case for you.
  8. WTB: SEQ v4

    Depends on what your skills or tools are. If you are comfortable working in wood or metal or know someone that is finishing off the case would be doable. If you are not comfortable and do not know someone that is. You may want to look into local maker spaces and see what you have for local resources. If you do not have local resources your best bet would be to either order the acrylic case, the hendrich case or request a custom order from Julian. You have a lot of options you just need to decide what you want to do. The lead time on the case can be quite long so that really should be the first order of business. the acrylic case may be the fastest to get. You do not mention a time frame. The other option is keeping an eye on the flea market and one will come around. they seem to be going in the 600-1000 price range depending on options.
  9. MBSEQ V4 build with MIDI, CV and DIGITAL OUT

    Excellent build it looks great!
  10. Describe the MIDI Router of your dream?!

    A way to quickly and easily switch to a new route and then switch back. Use case in a live performance is to switch to a second drum machine for a small section say 4 beats for different sound for accent and then want to switch right back. Could be used for other parts as well. Say for a lead part, especially when making a program change on an instrument when the audio drops or something weird happens when you make a program change or you want to create sustain on a part  but want the pattern to come back in without cutting off the sustain. With a poly synth it is easy to set the same sound to come back in on a second poly within the synth. There are other ways to do this but a route changes vs channel change on the sequencer might be more fun and flexible in live settings.
  11. SSI 2144 filter for the MB Sid

    Started putting together the external filter for my sid. I am trying out the ssi2144. I have not seen anyone post about using one on here yet. I have the adapter boards for them. All I have to say is that is some super small soldering! I think I have them in good shape though! I reviewed the schematics and it looks like it should work ok. The ssi 2144 has slightly different recommended caps then the SSM2044. I ordered the recommended caps forom the data sheet for the ssm and the ssi I may test both to see if I hear a difference. Will likely go with the recommended caps from the data sheet. There are a few other minor resistance changes on the data sheets too but not sure if they are required I will have to see how it sounds. The adapter are from modular addict sells them too but had been out of stock. also has published an file for them as well but I only needed a few of them... for 1.5 I picked up a few extra incase I broke them. If they all work may build another filter for something else. Did I mention that solder pitch is tiny!!! Here are the caps the ones on the left are for the ssm and the ones on the right are for the ssi.   C19-C24 10nF, 6.8NF for SSI2144   6 STYROFLEX 10N C25,C26 820pF, 560pF for SSI2144   2 STYROFLEX 820P  
  12. Defining microtonal/custom scales?

    You might be able to do it in NG where you do you sequencing in the sequencer then do a midi translation to the microtonal scales you want with pitch bends in NG. depending on how many octaves you are looking at you should have a good bit of room to play with in the existing structure. Maybe a bit clunky but should be functional.
  13. Sammich SID problem, please help! There is a good picture in the build guide of what voltages should be where.
  14. Sammich SID problem, please help!

    What are your voltages at the regulators and at the vcc on the pic and at the 8580? I would make sure you  have your voltages set properly. You can test with the sids out so you do not burn them. If the voltage is low you may have a short or have a bad solder or bad component somewhere to find. Maybe you are using the wrong power supply as well. That could be causing a lot of extra heat if the regulators have to dissipate a higher voltage as heat.
  15. GM5 driver not supported for STM32F4?

    Maybe it is related to the cable bring a USB A type cable and you need the B cable: