MIDIbox

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====== STELLAx4 ======
{{:phatline:STELLAx4-3D-Bottom.png?500|}}\\
**4x 8Bit Soundchips/TIAś on a 10x10cm PCB,**\\
controlled from a STM32F4 Microcontroller [[dipcoref4]],\\
based on [[antichambre|Antichambreś]]  [[midibox_tia|TIA Module]], with [[https://www.analog.com/media/en/technical-documentation/data-sheets/AD9833.pdf|AD9833ś]] as External programmable Clock, the Frequency-range is expandet...\\
**The Board acts a Motherboard,** for\\
  * 4x Soundchip... AND:\\
also like the [[stm32f4_module]] it provides:
  * Midi-IO - 1x IN, 1x OUT > 3,5Jacks/TRS\\
  * µSD-Card - 2 Save Patches\\
  * µController-Socket - 2 Plug the  [[dipcore_f4]] in, ask [[antichambre]] to get one!\\
  * J19>[[http://wiki.midibox.org/doku.php?id=aout_ng|AoutNG]] - to connect VCF or VCAs...\\
  * J8/9>[[http://ucapps.de/mbhp_dout.html|DOUT]] & [[http://ucapps.de/mbhp_din.html|DIN]] - 4 the UI\\ 
  * J15 (JLCD1) which handle from Stock 4x SPI-Displays (SSD1306),  - 4 the UI\\
  * J1>chain a nother STELLAx4 as "SLAVE" to it, to expand polyphony\\

ready for Pick and Place\\
{{:phatline:STELLAx4-3D-Top-B.png?500|}}\\
--all SMD-Parts are on one SIDE and are presoldered..
===== Features =====
 * Summed or Individual Audio-Outs, selectable via normal Jumpers \\
 * NTSC or PAL > select via SMD-Solder-Jumper\\
 * User-Interface  is C-Language-Programmable\\

====== Hardware Requirements ======
  * [[dipcoref4]]\\
  * 4 x [[https://en.wikipedia.org/wiki/Television_Interface_Adaptor#cite_note-0|TIA/STELLA]] [PAL or NTSC...)
  * Soldering Iron - with a Dip that can Handle Thruhole-Parts, solder Paste...\\
  * 5V from Mini-USB-Plug, or 5V at a 2Pin-Header connected to example a Eurorack Power Source (+5VDC!)\\
  * dont forget Midi TRS Cables\\

====== Shematic ======
Rev.A\\
{{:phatline:STELLAx4-Shematic.pdf?800|}}\\
{{:phatline:STELLAx4-Shematic.png?800|}}\\
\\
Rev.B\\
{{:phatline:STELLAx4-Shematic-B.pdf?800|}}\\
{{:phatline:STELLAx4-Shematic-B.png?800|}}\\

====== Building ======
The Design is optimized for Pick and Place > all SMD Parts are on the Top-PCB\\
The Rest is Thruhole > easy\\

Rev.A\\
{{:phatline:STELLAx4-PCB-Bottom.png?500|}}\\
{{:phatline:STELLAx4-PCB-TOP.png?500|}}\\
{{:phatline:STELLAx4-PCB.png?500|}}\\

Rev.B\\
{{:phatline:STELLAx4-PCB-Bottom-B.png?500|}}\\
{{:phatline:STELLAx4-PCB-TOP-B.png?500|}}\\
{{:phatline:STELLAx4-PCB-B.png?500|}}\\

===== BOM LCSC=====
these are the parts which are presoldered by the Pick and Place Machine\\
^Comment^Designator^Footprint^LCSC Part Number^Library Type^
|100K|Ra3,Rb3,Rc3,Rd3,Ra4,Rb4,Rc4,Rd4|midibox:0805-R|C17407|basic|
|100nF|Ca1,Cb1,Cc1,Cs1,Cd1,Ci1,CJi1,Ca2,Cb2,Cc2,C2,Cd2,Ci2,CJi2,Ca3,Cb3,Cc3,Cd3,Ci3,Cpa3,Cp3,Ca4,Cb4,Cc4,Cd4,Cu4,Ci4,Ca5,Cb5,Cc5,Cd5,Ca6,Cb6,Cc6,Cd6|midibox:0805-C|C49678|basic|
|10uF|Ca8,Cb8,Cc8,Cd8|midibox:1206-C|C13585|basic|
|1K|R5|midibox:1206-R|C4410|basic|
|1K8|Ra1,Rb1,Rc1,Rd1,Ra2,Rb2,Rc2,Rd2|midibox:0805-R|C17398|basic|
|1N4148W|D1|midibox:SOD123-DIODE|C81598|basic|
|220|R1,R2,R3|midibox:0805-R|C17557|basic|
|47uF|Cpa1,Cp1,Cpa2,Cp2,Ca7,Cb7,Cc7,Cd7|midibox:1206-C|C96123|basic|
|4K7|R4|midibox:1206-R|C17936|basic|
|74HC2G32|IC1,IC2,IC3,IC4|SOIC:VSSOP-8_2.3x2mm_P0.5mm|C91874|extendet|
|74HC541-TSSOP|U4|midibox:74HC541-TSSOP20|C406865|extendet|
|74HC595|Sa1,Sb1,Sc1,Sd1,S1,Sa2,Sb2,Sc2,Sd2|midibox:SOP-16_SOIC-16|C5947|basic|
|AD9833BRMZ|NCO1,NCO2,NCO3,NCO4|midibox:MSOP-10_3x3mm_P0.5mm|C9652|extendet|
|PTC|PTC1|midibox:1206-R|C126818|extended|
\\
===== BOM Mouser=====
ca. <30€ exlc shipping > so better order other stuff too, over 50€ there is free shipping!\\
**Parts for Handsolder:**[[https://www.mouser.com/tools/part-list-import.aspx|copy list below, and paste in this link]]\\

^Comment^Designator^Mouser Part Nr^
647-UKW1H100MDD|8\\
490-SJ1-3535NG-GR|3\\
512-6N138M|1\\
575-1104730841001000|1\\
200-CES12001TS|3\\
649-68000-220HLF|1\\ 
151-8010-E|12\\
649-68000-220HLF|1\\
571-1-2178710-0|5\\
732-5032CC25.0HJGA3|1\\
649-68000-220HLF|1\\
575-1104764041001000|4\\
798-DM3AT-SF-PEJM5|1\\
\\



for prototyping i ordered:\\
**490-SJ1-3535NG-GR**  instead of **490-SJ1-3535NG** because it is out of stock - so **GREEN sockets** for now!\\
\\
Cable-Connectors for UserInterface and AOUT-Module you will need also:\\
571-1-2178712-0|8\\
+ Ribbon Cables for example:\\
710-63911015521CAB|1\\

^Comment^Designator^Mouser Part Nr^
|10uF-Audio|Ca9Cb9Cc9Cd9Ca10Cb10Cc10Cd10|647-UFG1H100MDM|8|
|3.5Jack|Midi-I-1Midi-O-1Audio-Out1|490-SJ1-3535NG|3|
|6N138|U2|512-6N138M & 575-1104730841001000|1|
|DIPCOREF4_52P|U1|200-CES12001TS|3|
|Header-1x2-JUMPER|SumA-SumD2SumB2RailD2RailA2|649-68000-220HLF + 151-8010-E|12|
|Header-1x3|AUDIO1SUMMED1AUDIO2AUDIO3AUDIO4|649-68000-220HLF|1|
|Header-2x5-Micromatch|JLCD1,Jo1,Ji1,J19,J89|571-1-2178710-0|5|
|Oscillator-5032u7050|OSC1|732-5032CC25.0HJGA3|1|
|PinHead-1x2|JBOOT1AIN1J18|649-68000-220HLF|1|
|TIA|TIA1TIA2TIA3TIA4|575-1104764041001000|4|
|uSD_DM3ATDM3AT|U3|798-DM3AT-SF-PEJM5|1|
===== PART Locations=====
{{:phatline:stellax4-pcb-parts-revB.png?500|}}\\

====== To Do ======
save money for Rev.B - Prototype\\
UI-PCBs\\

====== Community users working on it ======
  * **[[Phatline]]** =  PCB & Shematic, UI-Programming, Documentation...\\
  * **[[antichambre]]** = Shematic, Porting 8>32Bit, Programming...\\

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

====== Community users interested on it ======
  * **[[sajtron]]** =  Chip composer who maybe wanna buy one...\\