2 layers79 × 85 mm
Dreamstalker PRO v2
orpaltech/dreamstalker
This device is designed to assist with lucid dreaming. The idea comes from this site: https://smartelectron.ru/projects/pribor-dlya-osoznannyh-snovidenij-dreamstalker-pro.
112 parts
4 layers150 × 150 mm
Homebrew 486
mattheeewahn/MDA80486SBC_Final1크기가 너무 커서 압축파일로 올립니다. PCB로 가면 아웃풋이 있고 아웃풋에 가면 homebrew486Bcu압축파일이 있는데 그대로 캐드나 온라인 거버 뷰어에 올리시면 볼수 있습니다
- Size
- 150 × 150 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 130
- Nets
- 335
- Pads
- 1,319
- Tracks, vias
- 10,279, 1,150
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 14 Apr 2026
- Updated
- 14 Apr 2026
Overview
Homebrew 486 is an open-source printed circuit board by mattheeewahn, from the mattheeewahn/MDA80486SBC_Final repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 150 × 150 mm with 130 parts on 335 nets, routed with 10,279 tracks and 1,150 vias.
It is built around the ATMEGA128L-8AI, 74LS245SC and HM628512LFP, with the AMS1117 and 74LS573PC among its other parts. Its parts include 42 capacitors, 29 resistors, 23 ICs, 22 connectors and 3 crystals. It belongs with the AVR (ATmega, ATtiny) and FPGA and CPLD boards of this library.
Main components
5
ATMEGA128L-8AI
TQFP-64-EP(10x10)-40℃~+85℃ 128KB 2.7V~5.5V 4KB 4KB 53 8 Bit 8MHz AVR Built-in FLASH TQFP-64-EP(10x10) Microcontrollers (MCU/MPU/SOC)Microchip TechnologyMicrocontrollers (MCU/MPU/SOC)74LS245SC
-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, TransceiversHM628512LFP
SOP-32-11.7mmSOP-32-11.7mm New Arrivals ROHSHITUncategorised
AMS1117
1.0 A Low-Dropout Fixed RegulatorAdvanced Monolithic SystemsUncategorised
74LS573PC
DIP-200℃~+70℃ 10ns 3ns 4.75V~5.25V 74LS 8 D Latch Tri-State DIP-20 Latches ROHSTexas InstrumentsLatches
README
README.md크기가 너무 커서 압축파일로 올립니다. PCB로 가면 아웃풋이 있고 아웃풋에 가면 homebrew486Bcu압축파일이 있는데 그대로 캐드나 온라인 거버 뷰어에 올리시면 볼수 있습니다
Parts
130| Qty | Value | Footprint | References |
|---|---|---|---|
| 34 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25 +18 |
| 10 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14, R15, R16, R19, R20, R21, R22, R23, R24, R25 |
| 8 | HM628512 | Package_SO:SOP-32_11.305x20.495mm_P1.27mm | U11, U12, U13, U14, U15, U16, U17, U18 |
| 6 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R11, R12, R13, R27, R28 |
| 6 | 74LS245 | Package_SO:SOP-20_7.5x12.8mm_P1.27mm | U5, U6, U7, U8, U19, U20 |
| 4 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C36, C37, C38, C39 |
| 4 | 4.7K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4 |
| 4 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J19, J20, J21, J22 |
| 3 | 120 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R7 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6 |
| 2 | 22u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C1, C2 |
| 2 | 300 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17, R18 |
| 2 | AMS1117 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3, U4 |
| 2 | Bus_ISA_16bit | ultimateretro:ISA16 | J1, J2 |
| 2 | MountingHole | MountingHole:MountingHole_4mm | H1, H3 |
| 2 | pcbway | img:pcbway | G***, G*** |
| 1 | 10 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29 |
| 1 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R26 |
| 1 | 16MHz | Crystal:Crystal_HC49-4H_Vertical | Y3 |
| 1 | 200 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 1 | 33 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10 |
| 1 | 486Socket | 486_Socket:486Socket | U1 |
| 1 | 74LS573 | Package_SO:SOP-20_7.5x12.8mm_P1.27mm | U23 |
| 1 | 8254 | Package_DIP:DIP-24_W15.24mm | U9 |
| 1 | 8259A-2 | Package_LCC:PLCC-28_THT-Socket | U10 |
| 1 | ATMegaSpare | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J14 |
| 1 | ATUART | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J16 |
| 1 | ATX-20 | Connector_Molex:Molex_Mini-Fit_Jr_5566-20A_2x10_P4.20mm_Vertical | J3 |
| 1 | ATmega128L-8A | Package_QFP:TQFP-64_14x14mm_P0.8mm | U22 |
| 1 | AVR ISP | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | CLKMUL SET | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J9 |
| 1 | D7_LED | LED_THT:LED_D4.0mm | D2 |
| 1 | Enable load | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | FPGA JTAG | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J5 |
| 1 | GTXO-14T | Oscillator:Oscillator_DIP-14 | Y2 |
| 1 | IOout | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J17 |
| 1 | ISA_DEBUG | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J10 |
| 1 | KB | 486custom:Connector_Mini-DIN_Female_6Pin_2rows | J13 |
| 1 | LOGO | img:m86_logo | G*** |
| 1 | MEM_WR_RD_J | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J12 |
| 1 | PC SPK | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J15 |
| 1 | PEN | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J11 |
| 1 | PWR_LED | LED_THT:LED_D4.0mm | D1 |
| 1 | RAM cacheable | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J7 |
| 1 | ROM cacheable | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J8 |
| 1 | Reset btn | Button_Switch_THT:SW_PUSH_6mm | SW2 |
| 1 | Reset ext | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J18 |
| 1 | SW_SPDT | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | SW1 |
| 1 | TXC-7C | Oscillator:Oscillator_SMD_SeikoEpson_SG8002CA-4Pin_7.0x5.0mm_HandSoldering | Y1 |
| 1 | Ver. 0.0.1 | MountingHole:MountingHole_4mm | H2 |
| 1 | Ver. Allison | MountingHole:MountingHole_4mm | H4 |
| 1 | W29C020 | Package_DIP:DIP-32_W15.24mm | U21 |
| 1 | XC2S100TQ144 | Package_QFP:TQFP-144_20x20mm_P0.5mm | U2 |
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Questions
How big is the Homebrew 486 PCB?
It measures 150 × 150 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Homebrew 486 use?
130 parts, built around the ATMEGA128L-8AI, 74LS245SC, HM628512LFP and AMS1117. 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 Homebrew 486 KiCad files?
From the mattheeewahn/MDA80486SBC_Final repository on GitHub, at the commit this page was made from: the board is homebrew_486.kicad_pcb and its schematic homebrew_486.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Homebrew 486 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).