MIDIbox

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
//FIXME Update thing out there//

A place to catalogue analogue drum experiments, clonings, mods, hacks, bends, MIDIbox integration, specialised drum sequencers, MBSEQ firmware, SID as drum machine, triggering, E-Drum heads etc etc etc.


==== Related pages on this wiki and ucapps.de : ====

**[[midibox_seq|MIDIBox SEQ v2]]** - a simple control surface can be built with 16 LEDs/switches and one encoder (according to the SEQ Drum Mode tutorial below), and still have full access to this [[http://www.ucapps.de/midibox_seq.html|amazing sequencer engine]].  Up to 48 seperate MIDI drum note assignments x 16 steps.

Can also take an [[aout_module|AOUT module]] for [[http://www.midibox.org/forum/index.php?topic=6192.msg44981#msg44981|up to four]] CVs outs.  The DOUTx4 expansion mentioned under MIDIO128 below could possibly be coded in.

With added code, a LED matrix to display all drum patterns simultanously may also be possible, as in the [[trsequencer#sds6|Simmons SDS6]].  Moxi has already implemented a 4x16 button/LED matrix, and TK has indicated up 1024 may be possible (in MIOS, not necessarily in the SEQ).  [[http://www.ucapps.de/midibox_seq/mbseq_dout_v2_ledmatrix.pdf|4x16 LED matrix wiring]] - **PDF**.  Also see the [[http://www.sparkfun.com/commerce/categories.php|Sparkfun]] parts listed below.

**[[midio128|MIDIO128]]** - up to 128 on/off signals and 128 input switches from one core.  Useful for a simple fixed velocity MIDI to trigger/gate converter, sequenced from other equipment or software.  A user adaption has added a [[how_to_use_midibox_cv_with_a_dout|DOUTx4 module]] for another 32 fixed velocity trigger outs.

**[[midibox_cv_v1|MIDIBox CV]]** - 8 gates and 2 analog CVs per AOUT module. Could be adapted for velocity triggers?

**[[trsequencer|TR Sequencer]]** - Discussion on the classic Roland TR-x0x drum sequencer user interface

**[[dseq32|DSEQ32]]** - mess's 32 step 8 track drum sequencer

**[[MB-606RE|Midibox 606re]]** - a re-edit of TR-606 CYM/HH/BD/SD parts

**[[http://www.ucapps.de/mios_download.html|MIOS Downloads]]** - Code examples for:\\
* 8 CV outputs with the MBHP_AOUT module\\
* button matrix of 8x8 = 64\\
* 64 CV INs and OUTs\\
* 64 pots, 128 buttons, 128 LEDs\\
* velocity buttons (e.g. for drumpads)\\
* MIDIBox SID - steal matrix code\\
* MIDIBox SEQ\\

==== Forum topics: ====

[[http://www.ucapps.de/midibox_seq_tutorial3.html|MIDIBox SEQ Drum Mode]]\\
[[http://www.midibox.org/forum/index.php?topic=5703.0|MIDIBoxSID as drum machine]] - sounds like 
[[http://www.midibox.org/midibox_sid/mbsid-d_demo2.mp3|this!]]\\
[[http://www.midibox.org/forum/index.php?topic=6331.0|Analog drum modules]] - cloning and triggering them - the thread that started it all\\
[[http://www.midibox.org/forum/index.php?topic=7036.msg46015|Moogah's 808/909 clone]]\\
[[http://www.midibox.org/forum/index.php?topic=5779.0|Beginner's 16 step SEQ project]]\\
[[http://www.midibox.org/forum/index.php?topic=2231.0|Alternative sequencer firmware]]\\

[[http://www.midibox.org/forum/index.php?topic=6707.0|MB SEQ with button matrix?]]\\
[[http://www.midibox.org/forum/index.php?topic=4253.0|SEQ with 4x16 buttons and LEDs]]\\
[[http://www.midibox.org/forum/index.php?topic=6895.0|16x16 button matrix]]\\
[[http://www.midibox.org/forum/index.php?topic=2099.msg15872#msg15872|4x16 LED/button matrix]]\\
[[http://www.midibox.org/forum/index.php?topic=7087.0|using scan matrix together with led matrix?]] - Success!\\
[[http://www.midibox.org/forum/index.php?topic=6952.0|MB-SEQ LED-Matrix in Firmware aktivieren]] - auf Deutch or [[http://translate.google.com/translate?u=http%3A%2F%2Fwww.midibox.org%2Fforum%2Findex.php%3Ftopic%3D6952.0&langpair=de%7Cen&hl=en&ie=UTF-8&oe=UTF-8&prev=%2Flanguage_tools|in Google English]]\\ 
[[http://www.midibox.org/forum/index.php?topic=2930.0|Diode matrix input]] - large matrix with MIDIO128\\
[[http://www.midibox.org/forum/index.php?topic=5626.0|80 LEDs from one CORE]]\\


==== Other resources ====

[[http://en.wikipedia.org/wiki/CV/Gate#Gate|V-Trig, S-Trig and Gate]] - from Wikipedia\\
[[http://www.synthesizers.com/gates.html|Gates and Triggers, Mystery Solved]] - from synthesizers.com\\
[[http://m.bareille.free.fr/midi2pic/midi2pic.htm|PIC MIDI programming]] - getting started\\
[[http://www.tomwiltshire.co.uk/sdiy/index.html|VC LFO and ADSR on PIC 16s]] - cloning analogue LFO and ADSR with PICs.

__ Drum pads and EDrums __

[[http://www.electronicdrums.com/pads/pads2.htm|A good piezo pad design]]\\
[[http://edrum.for.free.fr/modules.php?name=Content&pa=list_pages_categories&cid=1|EDrum For Free]] - great DIY site, heaps of designs for pads, triggers, pedals, hats etc

__ Yahoo Groups __

[[http://launch.groups.yahoo.com/group/tr-707/|TR-707]] - Service manual, schematics, mods:  you'll need to join to access files.\\
[[http://launch.groups.yahoo.com/group/drummachine/|Drummachine]] - moderator approval to join\\
[[http://groups.yahoo.com/group/Roland_Drum_Machines/|Roland Drum Machines]]\\
[[http://groups.yahoo.com/group/rolandtr505/|rolandtr505]]\\
[[http://groups.yahoo.com/group/Simmons_Drums/?yguid=9150350|Simmons_Drums]] - schematics and service manuals galore\\
[[http://groups.yahoo.com/search?query=circuit+bending&submit=Search|Circuit Bending]] - just a list of search results

==== Useful Parts ====

__ RGB Matrix __

[[http://www.sparkfun.com/commerce/categories.php|Sparkfun Electronics]] have an [[http://www.sparkfun.com/commerce/product_info.php?products_id=760|8x8 RGB LED Matrix]] with an SPI serial controller attached for $59.95.  Red/Green version $34.95, matrix only small $4.95 large $29.95.\\  The serial controller backpack contains a reprogrammable AVR ATMega8 microcontroller, which bumps up the value equation and opens a world of possibilities, such as LED sensors.

__ 4x4 lighted key matrix __

According to [[http://www.midibox.org/forum/index.php?topic=7116.msg46551|this forum thread]], [[http://www.sparkfun.com/commerce/categories.php|Sparkfun]] will also soon be offering "silicone illuminated buttons ... 4x4 arrays that will cost between $20 and $30 U.S ... with 5mm holes for our tri-color LEDs."

__ High power shift register __

[[http://www.sparkfun.com/commerce/product_info.php?products_id=734|Shift register 8 bit high power]] - serial in, 8 pins out at up to 50V/150mA each.  $1.95.  Sparkfun again :) This would be handy for triggering modules that expect more than +5V as from a DOUT.



==== Schematics: ====

[[http://elists.resynthesize.com/analogue-heaven/1996/06/200906/|S-Trig to V-Trig converter]] - also see below. 505/707 internal triggers are S-Trig.\\
[[http://www.retrosynth.com/docs/trigger/index.html|V-Trig to S-Trig converter]] - different one below\\
[[http://www.getlofi.com/?p=743|Simple switch/trigger with transistors]] - ground switch with NPN or +ve pulse with PNP.  The example given uses a PC parallel port and the [[http://www.mikmo.dk/cbsequencer.html|BendControl]] Win95 sequencer\\
[[http://www.deepchild.com/images/arista_schem.jpg|Arista Drum machine]]\\
[[http://www.matrixsynth.com/blog/media/misc/syntholliescans/|SynthOllie's scans]] - Boss PC-2 Percussion with noise generator mod, Boss handclap, Casio VL-1, clap, synbal, synclap, syntom II.\\
[[http://matrixsynth.blogspot.com/2006/06/more-scans-by-synth-ollie.html|Matrixsynth blog entry]] - where I got the link to synthollie and also a SynTom II and Cymbal II Zip file.\\
[[http://m.bareille.free.fr/synth.htm|Papareil Synth Labs]] - Coron Drum Synth clone schematics, also lots of other FX and synth modules, MIDI projects, etc.

__Roland TR-505 8x trigger out mod__

<code>R80 - Kick
R75 - Snare
R2  - Clap/Rim
R69 - Cowbell
R68 - Conga
R63 - Hats
R62 - Ride/Crash
R60 - Toms</code>

__S-Trig to V-Trig converter__

<code>This will produce a voltage
trigger in response to an
s-trigger out.  The trigger                 Off
voltage will be 0 or 9 volts.            ___o       ___________
Close the switch to use, open           /          | 9-volt    |
it to save the battery life.     |-----o    o---- +| battery   |-- ground
                 ________________|          On     |___________|
                 \               \
                 /               /
             10k \           10k \
                 /               /
                 |               |----------------------- to tip of jack
                 |               |                        sleeve to ground
                 |    100k       /
      ___________|___/\/\/\___|/
      |                       |\   2N3904 or equivalent
1   -|-  S-trigger              \
    _____     in                 |
2    |                          |
      |                         ---
      |                  ground  -
     ---  ground</code>

__V-Trig to S-Trig (another)__
<code>The circuit that I have is very simple. One VMOS FET (something like the 
VN10KM). No power, nothing...

it's something like:


                       S|-----------------o S-Trig
                       ---
                    G |   |
       trig o---------|   |
                      |___|
 V-Trig.                | D
                        |
        gnd o------------------------------o gnd


where G, S, and D stand for Gate, Source and Drain - and I may have them 
mixed up, coz I'm doing this from a bad memory)</code>

==== To do: ====
* MBFM drums (duh)\\
* Jamaroonies\\
* 505/707 as trigger source\\
* LED matrix\\
MIDIbox

User Tools

Site Tools

Page Tools
