12 Mai 2004

Redesigned Core module board

Category: MidiboxRaphaël Doursenaud @ 12 h 00 min

Status : Frozen

The MidiBox Project : http://www.midibox.org

Significant improvements against the original design

  • Only six bridges : NO wires under the board.
  • Fully equiped with in-circuit components.
  • 7 pin DIN connector for phantom power support through MIDI IN.
  • Ready for direct rear panel mount.

First let’s take a look at the schematic :
Core schematic
EAGLE schematic : Core schematic

This is how the board looks like after about 5 hours of hard work :
Core board
EAGLE board : Core board

Finally, here’s the partlist generated by EAGLE :
partlist

And a netlist for those who need it :
netlist


12 Mai 2004

Redesigned LTC module board

Category: MidiboxRaphaël Doursenaud @ 12 h 00 min

Status : Frozen.

The MidiBox Project : http://www.midibox.org

Significant improvements against the original design

  • Only one single bridge.
  • Fully equiped with in-circuit components.
  • Ready for direct rear panel mount.

First let’s take a look at the schematic :
LTC schematic
EAGLE schematic : LTC schematic

This is how the board looks like after about 6 hours of hard work :
LTC board
EAGLE board : LTC board

Finally, here’s the partlist generated by EAGLE :
partlist

And a netlist for those who need it :
netlist


12 Mai 2004

Redesigned JDM programmer board

Category: MidiboxRaphaël Doursenaud @ 12 h 00 min

Status : Frozen.

The MidiBox Project : http://www.midibox.org

Significant improvements against the original design

  • Support for both PIC18F452 and PIC16F87x using R4 pull-down resistor.
  • Only one single bridge : NO wires under the board.
  • Integrated external PSU support.

First let’s take a look at the schematic :
JDM schematic
EAGLE schematic : JDM schematic

This is how the board looks like after about 10 hours of hard work :
JDM board
EAGLE board : JDM board

Finally, here’s the partlist generated by EAGLE :
partlist

And a netlist for those who need it :
netlist


12 Mai 2004

Reborn the floorboard project

Category: MidiboxRaphaël Doursenaud @ 12 h 00 min

Status : Work In Progress.

The MidiBox Project : http://www.midibox.org

I’m actually in the phase of building a developpement prototype board using redesigned standard modules and beginning to define what the final hardware should look like.

Preliminary Specs

  • Big alphanumeric or dot-matrix LED based display for song titles and patch number …
  • Up and down bank buttons
  • A tap button for setting effect speed (essentially for delays)
  • 10 preset buttons (rock solid !!!)
  • A LED per preset button indicating the active preset
  • 10 to 20 parameters buttons (I don’t know yet)
  • 3 or 4 characters alphanumeric or dot-matrix LED displays for each parameter button indicating the function assigned (like REV/CHO/DLY/WHA …)
  • Dual color LED per parameter button indicating the ON/OFF state
  • MIDI IN and OUT Tongue
  • 2 to 4 relay-controlled jacks for amp channel switching
  • 2 to 4 external controller inputs to connect standard guitar volume pedals controlling MIDI parameters (like Volume, WHA … )
  • 3 or 4 characters alphanumeric or dot-matrix LED displays for each external controller input indicating the function assigned
  • The software must be capable of sending multiple program-changes/control-changes/whatever on multiple channels on an input event
  • PC based user interface on a 1st step and a PIC based next
  • Maybe include a coffee machine (just kidding)

For more informations, please check this post at the midibox.org forums.

Stay tuned!

Ressources : MIDI Specification