4 layers50.8 × 25.4 mm
16 layers95 × 82 mm
Lightrailwww
Lightiam/LightRail-Gerber- Size
- 95 × 82 mm
- Copper layers
- 16
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 103
- Pads
- 132
- Tracks, vias
- 95, 8
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 17 Mar 2026
- Updated
- 18 Mar 2026
Overview
Lightrailwww is an open-source printed circuit board by Lightiam, from the Lightiam/LightRail-Gerber repository on GitHub, published under the MIT licence. It is a 16-layer board of 95 × 82 mm with 18 parts on 103 nets, routed with 95 tracks and 8 vias.
It is built around the LMV358, W25Q128JVEIQ and AMS1117-1.8, with the AMS1117-3.3 and SG-8002DB-MPT among its other parts. Its parts include 6 connectors, 4 capacitors, 4 ICs, 2 crystals and 1 resistor.
Main components
5
LMV358
SOP-8-40℃~+125℃ 10pA 10pA 1MHz 2 2.5V~5.5V 20mA 20nV/√Hz@10kHz 2uV/℃ 40uA 5mV 600V/ms 65dB EMI filtering/RF suppression Rail-to-Rail Input, Rail-to-Rail Output SOP-8 Operational Amplifier ROHSTECH PUBLICOperational Amplifier
W25Q128JVEIQ
WSON-8-EP(6x8)-40℃~+85℃ 100,000 cycles 10uA 128Mbit 133MHz 2.7V~3.6V 20 Years Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection、Power lock protection SPI WSON-8-EP(6x8) NOR FLASH ROHSWinbondNAND FLASH
AMS1117-1.8
SOT-223-40℃~+125℃@(Tj) 0.003%Vout 1 1.3V@(1A) 1.8V 15V 1A 72dB@(120Hz) Fixed Positive Short Circuit Protection、Thermal shutdown SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsAMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SG-8002DB-MPT
-- Programmable OscillatorsSeiko EpsonProgrammable Oscillators
README
README.mdLightRail-Gerber
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 22pF | Capacitor_SMD:C_0402_1005Metric | C2, C3 |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric | C4 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 25 MHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | AMS1117-1.8 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | Conn_01x03 | Connector:FanPinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | Conn_02x05_Counter_Clockwise | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J6 |
| 1 | Conn_02x06_Counter_Clockwise | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J4 |
| 1 | Conn_02x10_Counter_Clockwise | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J2 |
| 1 | Conn_02x18_Counter_Clockwise | Connector_PinHeader_2.54mm:PinHeader_2x18_P2.54mm_Vertical | J3 |
| 1 | D_Photo | Diode_SMD:D_SOD-323 | D1 |
| 1 | LMV358 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | R | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | SG-8002DB | Oscillator:Oscillator_SeikoEpson_SG-8002DB | Y1 |
| 1 | W25Q128JVE | Package_SON:WSON-8-1EP_8x6mm_P1.27mm_EP3.4x4.3mm | U3 |
Questions
How big is the Lightrailwww PCB?
It measures 95 × 82 mm and has 16 copper layers, 1.6 mm thick.
What parts does the Lightrailwww use?
18 parts, built around the LMV358, W25Q128JVEIQ, AMS1117-1.8 and AMS1117-3.3. 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 Lightrailwww KiCad files?
From the Lightiam/LightRail-Gerber repository on GitHub, at the commit this page was made from: the board is lightrailwww.kicad_pcb and its schematic Clock_System.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lightrailwww design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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