2 layers416.8 × 346.1 mm
4 layers204 × 244 mm
Aries-1
computerguy096/Aries-13This is a work in progress micro-ATX 486 board, based off of the DTK 386 replica and the Prometheus VLB
- Size
- 204 × 244 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 381
- Nets
- 1,023
- Pads
- 3,667
- Tracks, vias
- 9,044, 788
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Mar 2026
- Updated
- 23 Mar 2026
Overview
Aries-1 is an open-source printed circuit board by computerguy096, from the computerguy096/Aries-1 repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 204 × 244 mm with 381 parts on 1,023 nets, routed with 9,044 tracks and 788 vias.
It is built around the 74LS245SC, 74F245D and 74F244D. Its parts include 107 resistors, 95 capacitors, 32 ICs, 10 connectors and 8 diodes.
Main components
374LS245SC
-0℃~+70℃ 12ns@5V,45pF 15mA 24mA 4.75V~5.25V 74LS 8 Bidirectional Output enable Schmitt trigger Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
74F245D
SOIC-20-300mil0℃~+70℃ 15mA 4.5V~5.5V 4ns@5V,50pF 64mA 74F Bidirectional Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNXP SemiconductorsBuffers, Drivers, Receivers, Transceivers74F244D
SOIC-20-300milSOIC-20-300mil Specialty Logic ROHSPhilips SemiconsSpecialty Logic
README
README.mdAries-1
This is a work in progress micro-ATX 486 board, based off of the DTK 386 replica and the Prometheus VLB
Special thanks to:
- Rigo for providing some useful footprints on his retro kicad repo
- Sergey for some more useful footprints and symbols, from the sandy river 486 repo
- Eivind for the CS4237 + OPL3 implementation on the ITX-Llama
Parts
381| Qty | Value | Footprint | References |
|---|---|---|---|
| 26 | 4.7K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24, R28, R29, R32, R34, R35, R36, R37, R38, R100, R101, R102, R103, R104, R107, R108 +10 |
| 21 | 4.7K | Resistor_SMD:R_Array_Convex_4x0603 | RN1, RN2, RN12, RN15, RN16, RN17, RN18, RN19, RN20, RN21, RN22, RN23, RN24, RN25, RN26, RN27 +5 |
| 19 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C12, C13, C14, C15, C17, C23, C44, C45, C47, C50, C51, C63, C64, C69, C71 +3 |
| 18 | 10pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C18, C20, C21, C22, C25, C27, C32, C34, C36, C38, C40, C41, C42, C43, C52, C56 +2 |
| 16 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R14, R15, R16, R30, R31, R43, R45, R49, R50, R51, R53, R54, R55, R71, R75 |
| 13 | R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R17 |
| 11 | 33R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R26, R27, R40, R41, R42, R44, R57, R58, R62, R63 |
| 10 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C24, C26, C28, C29, C30, C31, C33, C35, C37, C39 |
| 9 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C19, C53, C54, C55, C57, C58, C88, C89, C93 |
| 9 | 33R | Resistor_SMD:R_Array_Convex_4x0603 | RN4, RN5, RN6, RN7, RN8, RN9, RN10, RN11, RN32 |
| 9 | C | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C4, C6, C7, C8, C9, C10, C76 |
| 8 | 1N4148 | Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2, D3, D4, D5, D6, D7, D9 |
| 8 | 6.8k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R67, R70, R85, R86, R87, R88, R91, R93 |
| 7 | MountingHole_Pad | MountingHole:MountingHole_3.7mm_Pad_TopBottom | H1, H2, H3, H4, H5, H6, H7 |
| 6 | 10K | Resistor_SMD:R_Array_Convex_4x0603 | RN13, RN33, RN42, RN43, RN44, RN45 |
| 6 | 74LS245 | Package_SO:SO-20_12.8x7.5mm_P1.27mm | U27, U28, U29, U33, U41, U43 |
| 5 | 10R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22, R33, R60, R66, R106 |
| 5 | 150 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20, R73, R74, R76, R77 |
| 5 | 47pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C74, C75, C78, C79, C96 |
| 5 | FerriteBead | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | L2, L3, L4, L7, L8 |
| 4 | 180pF | umc:cap network | CN6, CN7, CN8, CN9 |
| 4 | 1K | Resistor_SMD:R_Array_Convex_4x0603 | RN38, RN39, RN40, RN41 |
| 4 | 47pF | umc:cap network | CN2, CN3, CN4, CN5 |
| 4 | 61C1024 | Package_DIP:DIP-32_W7.62mm | U16, U17, U18, U19 |
| 4 | 75R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R46, R47, R48, R64 |
| 4 | Bus_ISA_16bit | umc:ISA16 | ISA1, ISA2, ISA3, ISA4 |
| 3 | 10uF | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C3, C5, C16 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C61, C62, C85 |
| 3 | 150nF | Capacitor_SMD:C_0805_2012Metric | C66, C67, C68 |
| 3 | 220pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C91, C92, C95 |
| 3 | 33 | Resistor_SMD:R_Array_Convex_4x0603 | RN35, RN36, RN37 |
| 3 | 74F244 | Package_SO:SO-20_12.8x7.5mm_P1.27mm | U26, U37, U49 |
| 3 | 74LS138 | Package_SO:SO-16_3.9x9.9mm_P1.27mm | U25, U47, U48 |
| 3 | CPU conf 1 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP27, JP28, JP29 |
| 3 | FerriteBead | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | FB1, FB2, FB3 |
| 2 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C82, C87 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric | C70, C72 |
| 2 | 14.318MHz | Crystal:Crystal_HC18-U_Vertical | Y2, Y3 |
| 2 | 150R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R52, R56 |
| 2 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19, R23 |
| 2 | 1nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C59, C60 |
| 2 | 2.7nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C80, C84 |
| 2 | 2N3904 | Package_TO_SOT_SMD:SOT-23-3 | Q1, Q2 |
| 2 | 2k | Resistor_SMD:R_0805_2012Metric | R96, R97 |
| 2 | 3.3k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R89, R90 |
| 2 | 470 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R83, R84 |
| 2 | 600Ω@100MHz | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | FB4, FB5 |
| 2 | 61C256 | Package_DIP:DIP-28_W7.62mm | U20, U21 |
| 2 | 68R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R59, R61 |
| 2 | 7404 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U13, U22 |
| 2 | 7408 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U30, U36 |
| 2 | 74F245 | Package_SO:SO-20_12.8x7.5mm_P1.27mm | U39, U40 |
| 2 | 75232 | Package_SO:SO-20_12.8x7.5mm_P1.27mm | U14, U15 |
| 2 | 8.2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R68, R72 |
| 2 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | JP19, JP21 |
| 2 | PWRGD SEL | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP5, JP7 |
| 2 | V53C16258H | VLB:SOJ-40_10.16x26.00mm_P1.27mm | U5, U6 |
| 2 | ~ | umc:SIMM-72 | J7, J8 |
| 1 | 1.8432MHz | Crystal:Crystal_HC18-U_Horizontal_1EP_style2 | Y8 |
| 1 | 100R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18 |
| 1 | 100pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C46 |
| 1 | 14.318MHz | Oscillator:Oscillator_DIP-14 | Y7 |
| 1 | 16.9344MHz | Crystal:Crystal_HC18-U_Vertical | Y4 |
| 1 | 16C452 | Package_LCC:PLCC-68 | U42 |
| 1 | 180pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C103 |
| 1 | 1A | Fuse:Fuse_1210_3225Metric | F1 |
| 1 | 220 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R105 |
| 1 | 22nF | Capacitor_SMD:C_0805_2012Metric | C65 |
| 1 | 24MHz | Crystal:Crystal_HC18-U_Vertical | Y9 |
| 1 | 27C020 | Package_DIP:DIP-32_W15.24mm | U10 |
| 1 | 2N3906 | Package_TO_SOT_SMD:SOT-23-3 | Q3 |
| 1 | 32.768KHz | Crystal:Crystal_C26-LF_D2.1mm_L6.5mm_Horizontal | Y1 |
| 1 | 33 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R69 |
| 1 | 33pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C94 |
| 1 | 4069 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U35 |
| 1 | 452 IRQ | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | JP4 |
| 1 | 47 | Resistor_SMD:R_0805_2012Metric | R95 |
| 1 | 47R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R25 |
| 1 | 68pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C86 |
| 1 | 74F74 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U38 |
The 335 most common of 381 parts.
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Questions
How big is the Aries-1 PCB?
It measures 204 × 244 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Aries-1 use?
381 parts, built around the 74LS245SC, 74F245D and 74F244D. 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 Aries-1 KiCad files?
From the computerguy096/Aries-1 repository on GitHub, at the commit this page was made from: the board is kicad/aries-1.kicad_pcb and its schematic kicad/aries-1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Aries-1 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).