4 layers310 × 110 mm
4 layers310 × 199 mm
SplitBoard8Voice
hsetlik/PolySynthAnalog polyphonic synth powered by STM32F4
- Size
- 310 × 199 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 599
- Nets
- 485
- Pads
- 2,143
- Tracks, vias
- 6,091, 2,899
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 27 May 2024
- Updated
- 6 Nov 2026
Overview
SplitBoard8Voice is an open-source printed circuit board by hsetlik, from the hsetlik/PolySynth repository on GitHub. It is a 4-layer board of 310 × 199 mm with 599 parts on 485 nets, routed with 6,091 tracks and 2,899 vias.
It is built around the TMUX4051PW, 74HC14 and 74HC595, with the 74HC74D, 74HC04D and 74HC08D among its other parts. Its parts include 182 capacitors, 156 resistors, 69 diodes, 36 ICs and 18 connectors.
Main components
8
TMUX4051PW
TSSOP-16-12V~12V、5V~24V -55℃~+125℃ 1 140ns 190ns 20ns 280MHz 2pC 3pF 75Ω 8:1 Bidirectional analog channel、Glitch-free switching TSSOP-16 Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
74HC14
SOP-14-40℃~+85℃ 1.9V、3.98V、4.4V、5.48V、5.9V 100mV、260mV、260mV 20uA 25ns@4.5V,50pF 2V~6V 6 74HC Noise suppression function Schmitt trigger SOP-14 Inverters ROHSJSMSEMIInverters
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers74HC74D
SOIC-14-40℃~+125℃ 1 15ns 2 2V~6V 3.5pF 37ns@6V,50pF 3ns、3ns、3ns 40uA 5.2mA 5.2mA 74HC Series 82MHz Asynchronous Complementary D-Type Rising Edge Set and Reset SOIC-14 Flip Flops ROHSNexperiaFlip Flops74HC04D
SOP-14-40℃~+125℃ 1 1.5V~4.2V 1.9V、3.7V、5.2V 100mV、400mV、400mV 14ns@6V,50pF 2V~6V 2uA 5.2mA 5.2mA 500mV~1.8V 6 74HC SOIC-14 Inverters ROHSNexperiaInverters74HC08D
SOP-14-40℃~+125℃ 1.5V~4.2V 1.9V、3.7V、5.2V 100mV、400mV 2 27ns@4.5V,50pF 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series AND Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
SK6812
SMD-4P,5.4x5mm-40℃~+85℃ 0.6mA 1.6mm 120° 160mcd~320mcd 1kHz 2000V 280mcd~515mcd 3.7V~5.5V 460nm~470nm 520nm~530nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Built-in power-on reset circuit Semi-transparent lens SMD-4P,5.4x5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
PMEG3030EP
SOD-1281 Independent 30V 360mV@3A 3A 50A 5mA@30V SOD-128 Schottky Diodes ROHSNexperiaSchottky Diodes
Parts
599| Qty | Value | Footprint | References |
|---|---|---|---|
| 86 | 100n | Capacitor_SMD:C_0805_2012Metric | C201, C202, C302, C303, C304, C305, C306, C307, C308, C1001, C1002, C1003, C1004, C1005, C1006, C1007 +70 |
| 65 | SK6812 | LED_SMD:LED_SK6812_PLCC4_5.0x5.0mm_P3.2mm | D501, D502, D503, D504, D505, D506, D507, D508, D509, D510, D511, D512, D513, D514, D515, D516 +49 |
| 57 | 470n | Capacitor_SMD:C_0805_2012Metric | C317, C318, C319, C320, C321, C322, C323, C324, C325, C326, C327, C328, C341, C342, C343, C344 +41 |
| 52 | 47k | Resistor_SMD:R_0805_2012Metric | R207, R305, R413, R442, R501, R502, R503, R504, R505, R507, R508, R509, R510, R511, R512, R513 +36 |
| 43 | 22R | Resistor_SMD:R_0805_2012Metric | R1001, R1002, R1003, R1004, R1005, R1006, R1007, R1008, R1009, R1010, R1011, R1012, R1013, R1014, R1015, R1016 +27 |
| 20 | 10n | Capacitor_SMD:C_0805_2012Metric | C604, C605, C606, C607, C608, C609, C610, C611, C612, C613, C614, C615, C616, C617, C618, C619 +4 |
| 19 | 100k | Resistor_SMD:R_0805_2012Metric | R201, R202, R203, R204, R205, R206, R208, R209, R210, R211, R214, R215, R306, R307, R309, R401 +3 |
| 18 | 2k2 | Resistor_SMD:R_0805_2012Metric | R701, R703, R704, R705, R706, R707, R708, R709, R710, R711, R712, R713, R714, R715, R717, R718 +2 |
| 16 | TL074 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U201, U302, U303, U304, U305, U307, U309, U310, U311, U312, U315, U316, U317, U318, U319, U320 |
| 8 | VoiceBoardConn_20P_200P | Connector_PinHeader_2.00mm:PinHeader_2x10_P2.00mm_Vertical | J701, J702, J703, J704, J705, J706, J707, J708 |
| 7 | TMUX4051 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U306, U308, U313, U314, U321, U322, U323 |
| 6 | 220 | Resistor_SMD:R_0805_2012Metric | R436, R437, R440, R441, R443, R444 |
| 6 | LOOP | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R311, R427, R445, R446, R716, R1017 |
| 5 | 1u | Capacitor_SMD:C_0805_2012Metric | C203, C702, C703, C704, C705 |
| 4 | 10u | Capacitor_SMD:C_0805_2012Metric | C405, C418, C419, C627 |
| 4 | 6p | Capacitor_SMD:C_0805_2012Metric | C401, C402, C403, C407 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R303, R304, R702 |
| 3 | MCP23S17_SS | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U501, U601, U602 |
| 3 | PMEG3030 | Diode_SMD:D_SOD-123 | D402, D403, D404 |
| 2 | 22u | Capacitor_SMD:C_0805_2012Metric | C422, C423 |
| 2 | 27k | Resistor_SMD:R_0805_2012Metric | R308, R310 |
| 2 | 2u2 | Capacitor_SMD:C_0805_2012Metric | C413, C414 |
| 2 | 3k3 | Resistor_SMD:R_0805_2012Metric | R301, R302 |
| 2 | 470 | Resistor_SMD:R_0805_2012Metric | R212, R213 |
| 2 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C301, C410 |
| 2 | 74HC14 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1006, U1007 |
| 2 | 74HC595 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1002, U1005 |
| 2 | 74HC74 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1001, U1003 |
| 2 | HP_B | Button_Switch_THT:SW_PUSH_6mm | SW603, SW606 |
| 1 | 100kA | Potentiometer_THT:Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV801 |
| 1 | 12k | Resistor_SMD:R_0805_2012Metric | R425 |
| 1 | 16MHz | Crystal:Crystal_SMD_EuroQuartz_MT-4Pin_3.2x2.5mm | Y401 |
| 1 | 1N4148 | Diode_SMD:D_SOD-123 | D401 |
| 1 | 2.2uH | Inductor_SMD:L_Abracon_ASPI-4030S | L401 |
| 1 | 2k7 | Resistor_SMD:R_0805_2012Metric | R426 |
| 1 | 32.768kHZ | Crystal:Crystal_SMD_SeikoEpson_MC306-4Pin_8.0x3.2mm | Y402 |
| 1 | 4k7 | Resistor_SMD:R_0805_2012Metric | R439 |
| 1 | 6N138 | Package_DIP:DIP-8_W7.62mm | U405 |
| 1 | 74HC04 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U404 |
| 1 | 74HC08 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1004 |
| 1 | 90R | Inductor_SMD:L_0805_2012Metric | FB401 |
| 1 | ALT_B | Button_Switch_THT:SW_PUSH_6mm | SW612 |
| 1 | AUDIO_OUT | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J201 |
| 1 | A_LOWER | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J901 |
| 1 | A_UPPER | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J801 |
| 1 | BOOT | Button_Switch_SMD:SW_SPST_B3U-1000P | SW402 |
| 1 | B_LOWER | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J902 |
| 1 | B_UPPER | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J802 |
| 1 | CTF_DAC | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP307 |
| 1 | CTF_RAW | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP308 |
| 1 | C_LOWER | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J903 |
| 1 | C_UPPER | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J803 |
| 1 | DAC7578xPW | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U301 |
| 1 | DAC_SCL | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP418 |
| 1 | DAC_SDA | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP419 |
| 1 | DATA | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J402 |
| 1 | DISP_CS | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP425 |
| 1 | DISP_DC | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP430 |
| 1 | DISP_MISO | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP427 |
| 1 | DISP_MOSI | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP428 |
| 1 | DISP_SCK | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP426 |
| 1 | D_LOWER | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J904 |
| 1 | D_UPPER | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J804 |
| 1 | ENCA | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE602 |
| 1 | ENCB | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE604 |
| 1 | ENCC | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE605 |
| 1 | ENCD | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE608 |
| 1 | ENC_CF | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE601 |
| 1 | ENC_DEPTH | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE607 |
| 1 | ENC_FOLD | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE609 |
| 1 | ENC_MENU | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_5Pin | SW611 |
| 1 | ENC_PWM | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE606 |
| 1 | ENC_RES | Rotary_Encoder:RotaryEncoder_Alps_EC12E_Vertical_H20mm_NOMP | RE603 |
| 1 | ENV1_B | Button_Switch_THT:SW_PUSH_6mm | SW601 |
| 1 | ENV2_B | Button_Switch_THT:SW_PUSH_6mm | SW602 |
| 1 | EXP_CS | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP407 |
| 1 | EXP_INTA | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP421 |
| 1 | EXP_INTB | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP422 |
| 1 | EXP_INTC | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP423 |
| 1 | EXP_MISO | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm_VAL | TP409 |
The 496 most common of 599 parts.
Questions
How big is the SplitBoard8Voice PCB?
It measures 310 × 199 mm and has 4 copper layers, 1.6 mm thick.
What parts does the SplitBoard8Voice use?
599 parts, built around the TMUX4051PW, 74HC14, 74HC595 and 74HC74D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the SplitBoard8Voice KiCad files?
From the hsetlik/PolySynth repository on GitHub, at the commit this page was made from: the board is Old/SplitBoard8Voice/SplitBoard8Voice.kicad_pcb and its schematic Old/LowerBoard1v2/AudioOut.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SplitBoard8Voice design in my own project?
Its repository states no licence, so its author keeps all rights: ask hsetlik before reusing the design.
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