4 layers102.9 × 96.7 mm
PicoGUS chipdown
polpo/picogus
Emulation of ISA sound cards and CD-ROM on Raspberry Pi Pico (GUS, SB/Adlib, MPU-401, Tandy, CMS, Panasonic CD-ROM) with USB mouse/joystick support
99 parts805
4 layers56 × 87.8 mm
Picogus104
UzixLS/picogus10423PicoGUS sound card for PC/104 interface
- Size
- 56 × 87.8 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 114
- Nets
- 215
- Pads
- 611
- Tracks, vias
- 1,708, 404
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 24 Dec 2024
- Updated
- 17 Jun 2026
Overview
Picogus104 is an open-source printed circuit board by UzixLS, from the UzixLS/picogus104 repository on GitHub. It is a 4-layer board of 56 × 87.8 mm with 114 parts on 215 nets, routed with 1,708 tracks and 404 vias.
It is built around the RP2040, SAM2695 and M62429L, with the W25Q128JVSIQ, 74LVC00AD and SN74CB3T3257PW among its other parts. Its parts include 56 capacitors, 21 resistors, 14 ICs, 12 connectors and 2 crystals. It belongs with the audio and music boards and the RP2040 boards of this library.
Main components
10
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
SAM2695
QFN-48-EP_6x6-25℃~+70℃ 2.7V~3.6V Processor、Encoder/decoder QFN-48-EP(6x6) Audio Interface ICs ROHSDREAMAudio Interface ICs
M62429L
SOIC-8-20℃~+75℃ 3V~5.5V Volume Control SOIC-8 Audio Interface ICs ROHSWuxi I-core ElecAudio Interface ICs
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
74LVC00AD
SOP-14-40℃~+125℃ 1.08V~2V 1.2V~3.6V 120mV~800mV 24mA 24mA 4 4.3ns@3.3V,50pF 40uA 74LVC Series NAND Gate SOP-14 Logic Gates ROHSNexperiaGates
SN74CB3T3257PW
TSSOP-16-40℃~+85℃ 0.25ns@3.3V,30pF 128mA 128mA 2.3V~3.6V 20uA 74CB3T Multiplexer Output enable high-impedance、Power-off protection、Level shifting Single Supply TSSOP-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsAnalog Switches, Multiplexers74AHC14D
SOIC-14-40℃~+125℃ 1 10.6ns@5V,50pF 2.2V~3.85V 2V~5.5V 2uA 4.4V~4.5V 550mV 6 74AHC 8mA 8mA 900mV~1.65V Schmitt trigger 噪声抑制功能 SOIC-14 Inverters ROHSNexperiaInverters
APS6404L-3SQR-SN
SOP-8SOP-8 PSRAM ROHSAP MemoryDRAM
PCM5100PW
TSSOP-20-25℃~+85℃ 2 3.3V~3.6V Digital filtering、Power-down mode I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special PurposeSN74CB3T3245PW
TSSOP-20-40℃~+85℃ 0.25ns@3.3V,50pF 2.3V~3.6V 40uA 8/8 Output enable high-impedance、Power-off protection、Level shifting Single Supply TSSOP-20 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
README
README.mdPicoGUS/104
Gravis Ultrasound compatible sound card for IBM PC.
This is variant of PicoGUS v2.0 project by Ian Scott adapted for PC/104 bus. This variant also integrates SAM2695 MIDI synthesizer on board.
For details and firmware please follow this link: https://github.com/polpo/picogus
Parts
114| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3, C4, C5, C6, C7, C15, C16, C17, C21, C23, C45, C46, C48, C52, C54 +2 |
| 10 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C26, C27, C28, C30, C32, C33, C34, C35, C36, C37 |
| 6 | 2.2uF | Capacitor_SMD:CP_Elec_4x5.4 | C39, C40, C41, C42, C43, C44 |
| 5 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C13, C18, C47, C49 |
| 5 | 1K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R6, R7, R8, R9 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10, C53, C55, C56 |
| 4 | 30pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C24, C25, C50, C51 |
| 4 | 5.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R17, R19, R20, R21 |
| 3 | 470 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11, R13 |
| 2 | 100Ω@100MHz | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | FB3, FB4 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R5 |
| 2 | 12MHz | my:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1, Y2 |
| 2 | 1KΩ@100MHz | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | FB1, FB2 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12, R14 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C29, C31 |
| 2 | 2.2nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C14, C19 |
| 2 | 2.2uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C20, C22 |
| 2 | 220 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3 |
| 2 | 27 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R15, R16 |
| 2 | 3.5mm TRS | my:PJ-322 | J7, J9 |
| 2 | 47uF | Capacitor_SMD:C_1206_3216Metric | C1, C11 |
| 2 | 74LVC00 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U4, U5 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5, J10 |
| 2 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J6, J8 |
| 2 | MountingHole_3.2mm_M3_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2 |
| 2 | SN74CB3T3257 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U1, U2 |
| 1 | 100uF | Capacitor_SMD:C_1206_3216Metric | C38 |
| 1 | 15K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18 |
| 1 | 74AHC14 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U3 |
| 1 | 74LVC2G06DB | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U6 |
| 1 | AMS1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U9 |
| 1 | APS6404L-3SQR-SN | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | DEBUG | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | IRQDMA_JP | Connector_PinHeader_2.54mm:PinHeader_2x09_P2.54mm_Vertical | J3 |
| 1 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | M62429L | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U13 |
| 1 | PC104 | Connector_PinHeader_2.54mm:PinHeader_2x32_P2.54mm_Vertical | J11 |
| 1 | PC104_16 | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J12 |
| 1 | PCM5100 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U10 |
| 1 | Polyfuse | Fuse:Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1 |
| 1 | RP2040 | my:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U12 |
| 1 | SAM2695 | my:QFN-48-1EP_6x6mm_P0.4mm_EP4.2x4.2mm | U14 |
| 1 | SN74CB3T3245 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U7 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | UART_TX | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | W25Q128JVS | my:SOIC-8_5.23x5.23mm_P1.27mm-LONG | U11 |
Questions
How big is the Picogus104 PCB?
It measures 56 × 87.8 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Picogus104 use?
114 parts, built around the RP2040, SAM2695, M62429L and W25Q128JVSIQ. 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 Picogus104 KiCad files?
From the UzixLS/picogus104 repository on GitHub, at the commit this page was made from: the board is pcb/rev.A/picogus104.kicad_pcb and its schematic pcb/rev.A/RP2040.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Picogus104 design in my own project?
Its repository states no licence, so its author keeps all rights: ask UzixLS before reusing the design.
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