2 layers82.6 × 79.5 mm
2 layers37 × 15.5 mm
Repository for my Linux Driver Workshop 2025
- Size
- 37 × 15.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 19
- Pads
- 46
- Tracks, vias
- 62, 15
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 Feb 2025
- Updated
- 9 Aug 2025
Overview
LTW25 is an open-source printed circuit board by Johannes4Linux, from the Johannes4Linux/LTW25 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 37 × 15.5 mm with 10 parts on 19 nets, routed with 62 tracks and 15 vias.
It is built around the PCF8574T. Its parts include 5 resistors, 1 capacitor, 1 IC, 1 diode and 1 connector. It belongs with the computers and single-board computers boards of this library.
Main components
1README
README.mdLinux Treiber Workshop 2025
This repository contains the material for my Linux Driver Workshop 2025:
- PCB Schematic and Layout for RGB LED PCB
- Repositories with Workshop at specific Events as submodules
- Workshop at Chemnitzer Linux Tagen
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 470 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | Conn_02x04_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x04_P2.54mm_Vertical | J1 |
| 1 | ESS-5050RGBC-T3 | LED_SMD:LED_RGB_5050-6 | D1 |
| 1 | PCF8574 | Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm | U1 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_PTS645 | SW1 |
Questions
How big is the LTW25 PCB?
It measures 37 × 15.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LTW25 use?
10 parts, built around the PCF8574T. 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 LTW25 KiCad files?
From the Johannes4Linux/LTW25 repository on GitHub, at the commit this page was made from: the board is PCB/ltw_25.kicad_pcb and its schematic PCB/ltw_25.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LTW25 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).
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