4x 8Bit Soundchips/TIAś on a 10x10cm PCB,
controlled from a STM32F4 Microcontroller dipcoref4,
based on Antichambreś TIA Module, with 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>AoutNG - to connect VCF or VCAs…
  
• J8/9>DOUT & 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

–all SMD-Parts are on one SIDE and are presoldered..

* Summed or Individual Audio-Outs, selectable via normal Jumpers
* NTSC or PAL > select via SMD-Solder-Jumper
* User-Interface is C-Language-Programmable

• dipcoref4
  
• 4 x 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
  

Rev.A
stellax4-shematic.pdf


Rev.B
stellax4-shematic-b.pdf

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

Rev.A

Rev.B

these are the parts which are presoldered by the Pick and Place Machine

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|

ca. <30€ exlc shipping > so better order other stuff too, over 50€ there is free shipping!
Parts for Handsolder:copy list below, and paste in this link

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

waiting for christmas
UI-PCBs
Debugging First Version

• Phatline = PCB & Shematic, UI-Programming, Documentation…
  
• antichambre = Shematic, Porting 8>32Bit, Programming…
  

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

• sajtron = Chip composer who maybe wanna buy one…