MIDIbox

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====== EuroRack - Midi IO - Board ======
{{:phatline:Euro_Midi_IO_3D_Draft.jpg?600|}}\\
{{:phatline:Euro_Midi_IO_Panel.jpg?900|}}\\

**PCB Size is 100x40mm**\\
{{:phatline:Euro_Midi_IO_3D_FRONT.jpg?900|}}\\
{{:phatline:Euro_Midi_IO_3D_FRONT180.jpg?900|}}\\
{{:phatline:Euro_Midi_IO_3D_TOP.jpg?900|}}\\
{{:phatline:Euro_Midi_IO_3D_BACK.jpg?900|}}\\

{{:phatline:EURO_Midi_IO_Shematic.jpg?900|}}\\

FIXME - The Connection from J1 to J2 is wrong - its 1:1 but it has to be crossed.\\
====== Hardware Requirements ======
  * Soldering Iron - with a Dip that can Handle Thruhole-Parts and 1206 SMDs, solder Paste...\\
  * The other Parts from the BOM\\
  * a Midibox Core32

====== Building and BOM======
All necessery Information is printet on the PCB, but also check the {{:phatline:EURO_Midi_IO_Shematic.pdf?900|Shematic}}\\ 
**Mouser:**\\
^Ref^Q^mouser^Type^Footprint^Description^
|AB1 - AB6|1|649-1012938192001BLF |2x20 Pin Header|2x3 Pin Header 2.54 * 2.54 Pitch|to set Midi A-B Standard|
|Jumper|12|571-8815451 |JUMPER|Jumper|to set Midi A-B Standard|
|C1 – C4|4|187-CL31B104KBCNNND |100nF unolarized|1206 inch - 3216 metric|Unpolarized! > 10V|
|C5 – C6|2|963-TMK316AB7106KLHT|10uF unpolarized|1206 inch - 3216 metric|Unpolarized! > 10V|
|D1 – D4|4|241-1N4148W_R1_00001 |1N4148W|SOD123-DIODE|doesnt draw much current|
|J1 – J2|2|571-12150790 |TE Connnectivity|2x5P Micromatch Female|To solder in the PCB|
|J1 – J2|4|571-1-2178712-0|TE Connnectivity|2x5P Micromatch Male|Crimp Connector for Flat-Cables|
|J3 – J8|6|490-SJ1-3535NG |CUI 3.5mm Audio Jack|3.5mm Jack|those you know from PC-Mobos|
|LED1 – LED2|2|696-SSL-LX30FT4ID |LED ROT|LED_3mm|there are 8 LEDs you use only 4…|
|LED3 – LED4|2|696-SSL-LX30FT4GD |LED GRÜN|LED_3mm|… front or back soldered|
|R1 - R14|14|RC1206FR-07220RL|220|1206 inch - 3216 metric|5 10% doesnt matter|
|R15 – R18|4|CR1206-JW-472ELF |4K7|1206 inch - 3216 metric|5 10% doesnt matter|
|R19 - R20 |2|AC1206FR-071KL |1K|1206 inch - 3216 metric|5 10% doesnt matter|
|U1 - U2|2|630-6N138-000E|6N138|DIP-8|Optocoupler|
|U1 - U2|2|437-1108730441001101|IC Socket 2x 4 Pin|DIP-8|Socket for Optocoupler|
|U3|1|771-74HC14D-T|74HC14|SOIC-14|SOLDER SKILLs|
|Cable|1|617-09180407001|Flat||a quantity forEver|
\\
**copy following Lines [[https://www.mouser.com/tools/part-list-import.aspx|in the box]] - and make a new project**\\
649-1012938192001BLF|1\\
571-8815451|12\\
187-CL31B104KBCNNND|4\\
963-TMK316AB7106KLHT|2\\
241-1N4148W_R1_00001|4\\
571-12150790|2\\
571-1-2178712-0|4\\
490-SJ1-3535NG|6\\
696-SSL-LX30FT4ID|2\\
696-SSL-LX30FT4GD|2\\
RC1206FR-07220RL|14\\
CR1206-JW-472ELF|4\\
AC1206FR-071KL|2\\
630-6N138-000E|2\\
437-1108730441001101|2\\
771-74HC14D-T|1\\
617-09180407001|1\\
\\
then decide **how often you want to order all off, the BOM Quantity is for 1Module**\\
On one PCB you have 2 ident MidiIO-Modules, on JLCPCB you order typicaly 5 PCB, so your quantity may be 10x\\
BUT dont buy multiple Flatbandcables... these are hundrets of meter!\\

**1 times: 45€** 25€ parts and 20€ shipping...shipping excl fat\\
if you go over 50€ shipping is free.\\
lets take a look if we order it\\
**5 times: 95€** incl free shipping excl fat\\
**10times:176€** incl free shipping excl fat\\ 

4x (or 20x) [[https://www.buerklin.com/de/Montageblock/p/17H917|Leiterplatten Montageblock aka Standoffs]] 100x summed 30€\\
You will also need M3 Screws - 2 off them...\\
Also here it is clever to order 100 pieces for a cheaper price - you will need this on all my projects...\\

====== PCB ======
{{:phatline:Midi-IO-b-Gerber.zip?900|GERBER-Files Rev B for Production}}\\
I already received and testet Rev A, i hade some small Bugs which i got fixed with some  wires...\\
So i got it fully working... the Bugfixes are includet in Rev.B\\
---never the less i did not testet Rev.B... since i have enough Rev.A for my whole Modular-Rack @ home\\
so feel free to test - and report!\\
{{:phatline:EURO_Midi_IO_Board.jpg?900|}}\\
FIXME - dont use this - because of J1-J2 connection is wrong (this matter if you chain 2 Midi-IO-Modules\\


====== Frontpanel======
{{:phatline:Euro_Midi_IO_Panel-Dimensions.jpg?900|}}\\
**I made a {{:phatline:EuroMidiIO-Panel-for-milling.zip?900|DXF}}File which you can print, and drill it DIY  or  \\
you can send to:**\\
[[https://shop.frontpanels.de/custom-panels|frontpanels.de in germany]] 17,08€ a panel (5x-10%, 10x-20%, 20x-30%, 30x-40%, 100x-50%)\\
I tested one with them - and yes they looking good - and they fit!:\\
\\
another good guy: [[https://thebeast.co.uk/2d/|The Beast - UK]]\\

\\
**Recommend Material**\\
2mm x 128.5 x 17.78 Aluminium, anodised\\
\\
**A cheaper way is: order a 1,6mm thick Aluminium PCB as Frontpanel:**\\
this are the gerbers:\\
{{:phatline:GERBER-EURO_MidiIO_FP.zip?900|}}\\
I have testet it, and this 1.6mm Aluminium from JLCPCB is too thin, i endet up by sandwith 2 off them togehter - so its strong enough, since the Labels are reversed when use the PCB reversed - i now removed them in this gerber file!\\
{{:phatline:Euro_Midi_IO_3D_RENDER-Panel.jpg?900|}}\\



====== To Do ======
Use a other Midi-OUT-Activity Shematic! - its not working for high speed midi! - while Note-ON off is ok, Midiclock can make trouble (the Charge-Discharge Circuit in this Design is not sufficent for this!)\\

====== Community users working on it ======
  * **[[Phatline]]** =  PCB & Shematic, Documentation...\\

Just let a Private message on the forum to user already involved.\\