moogah

Hola! I'm doing some spring cleaning and there is a SPI (not usb) button/led pad from sparkfun that I don't need anymore. This is one of the fully assembled ones and I've got the rubber pads to go with it. 60$ worth of stuff new, take it for 30$ + shipping :ahappy: I've also been pondering selling one of my Shruthi-1's with the roland filter. 400$ I'll consider offers.

This project is a dream come true :) I think you are on the right track with the features, I'm excited about the prospect of using this to retrofit my monosynths and be the brain of my modular! I do have two things to request, but I'd understand if they fall outside the scope of work :) 1.) If this could support the SHx8 module I'll be _thrilled_. 8 CV's isn't enough for the architecture of modular I've been building all these years and I'm one of the lucky ones who has plenty of the parts around :whistle: 2.) Add a clock-synched option to the multi-stage envelopes (yes, this gets close to sequencing). In this mode, instead of choosing a time period to elapse between stages the stage increments based on a clock divider. The ideal operation for this mode would include a start and end value for each stage and a curve parameter which selects between log, lin and rev. log. When the last stage has finished the envelope can either start a release stage or loop back to a loop point. I'd suggest giving this some thought, it's not exactly the same thing as sequencing and, particularly for the creation of pads, the ability to sync envelope stages to a clock divider can achieve some really neat effects when there are multiples of these envelopes working together on different parameters! Imagine a filter sweep that starts out as a slow linear rise for a bar and then becomes a 1/8 note saw wave 'LFO' at the end by using the loop points. Sounds neat to me! The clock divider time could probably be independent per stage too (ie: 1 bar for the first stage, 1/8 for the second stage), perhaps by having each stage responsible for triggering the next once it's time is up.. not too sure about this, I've only coded it mentally.. but it seems that each stage should be able to notify the main process that it's about to complete and the next stage should be queued up. Thanks again for all your hard work on this TK, this will compete with the SEQ for my favorite MB project :thumbsup: EDIT: Missed this the first read-through! TK you have once again outdone yourself! :sorcerer:

Oh yea, that helps a lot! Bit-bang? LOL I need to get my mind out of the gutter :whistle:

Pardon the 'double post' but this thread really addresses something I've been pondering for a while now: I want a *hardware* midi router that has an arbitrary number of IO ports. 16 will be enough for my setup at the moment, but in the future I could easily expand to more. By routing I meant the basic stuff like routing all midi events from port 1 to port 2 along with much more sophisticated patches like: port 1 channel 1 => port 2 channel 3 or Note on/off and velocity from port 1 channel => port 2 channel 1 and port 3 channel 2 or Mod wheel from port 1 channel 1 => CC#12 on port 2 channel [1, 2] && CC#14 on port 3 channel 4 (scaled to values 32-64) Now I would also want this to act as a 'standard' midi interface (perhaps with the patching abstraction applied here too) but I *don't* want any routing or patching to be done on the computer side! The latency or rather the inconsistency of latency introduced when signals hit the silicon metropolis of a modern desktop computer is unacceptable to me :) I certainly don't want midi events to need to be piped across a variety of busses, protocols and driver code before they are parsed and routed. Even working with Ableton and 2 Gm5x5x5's I sometimes find myself needing to accommodate 20+ milliseconds of lag :( Now, writing the code and drivers isn't a problem for me.. but at the moment I'm a bit lost regarding how to accomplish an 'arbitrary' number of midi IO's in hardware.. I see that the Gm5 supports 5... but why not more? Do we need to have an IIC chip for each or is there something simpler? .. how much of a noob do I sound like now? :rolleyes:

I'm in (nevermind my request for that single board above, I'll add that to the bulkorder :))

Added 4 chips and some PCB's for me :)

whoever buys this is obviously free to contact me at moogah/gmail (etc) if they have questions or need help :)

If there is a board left I would like another for the modular :D

What a fantastic build! And very good sound too! It always surprises me how each new MB808 has a slightly different personality, none sound quite identical. It is a shame that the eight-oh-eight forum is still down, I think I'm going to look into getting back up and running since it's such a good resource for information about both the MB808 and the original 808 as well. Regarding build documentation, specifically schematics and layout documents: it's a bit tricky for me to make these avilable to the public at large, but I hope everyone with a MB808 kit knows that they can contact me anytime at my gmail address (moogah,gmail,com) and I'm very happy to help you and provide documents you need :thumbsup:

I swear I'd already shared this on the forum, but the search disagrees. These chips are not going to be a big deal to most of you, but I'm going to bet there is at least one person who really wants to get their hands on some of these.. and you'll have to really want it too because they cost about 15$ USD each! Still, for ~120$ for a SHX8 module it's still much cheaper than using an array of DACs! http://www.littlediode.com/components/NJU7304D.html

Figured it was long overdue that I shared some links to moosiks made with the MB808. The Carrier Wave - Orion Busted (the carrier wave's new belt remix) Be sure to listen to his other tracks while you're there. If you hear 808, it's the MB808. Post-processing provided by Ableton and a big stack o' Euro modules. MB808 through a CGS Wasp filter + JH 4069 Distortion This is a one-take demo (maybe skip the first 1:45 or so) I recorded to show off the same MB808 heard above. While repairing it I added in a CGS filter+distortion circuit to use up the additional pots left on the side of the PCB. This is a great example of using the A/B/C/D buttons to create a very diverse set of rhythms from a single 4-bar pattern! In real time! edit: to be clear, the carrier wave is not me :)

Ok, so my bad on eight-oh-eight.org :whistle: but I've fixed the payment information and the site should be back up in a day or so. I'll post here when I've confirmed it's available again! I also support the idea of folding the MB-808 forum into midibox.org. I started a separate forum back in the day because I was thinking that all the SynthDIY type topics would clutter up the midibox conversations, but we've grown much larger as a community since then and I think there is plenty of room for the boom around here :afro:

I wanna be a happy fella! one more of these would fit nicely in the 5U modular :)

I made a thing! :cool: :cool: