Cheapsk8 lan
About the Cheapsk8 lan PCB
Cheapsk8 lan is an open source PCB design by zombienerd, published on GitHub. It is a 2-layer board measuring 153.1 × 66.5 mm, with 21 components from 15 distinct parts.
Other key parts include the RTL8019AS, SST39SF040 and 93LCxxC. By type, the board carries 9 capacitors, 6 resistors, 3 ICs, 2 connectors and 1 crystal.
From the project
8-bit ISA Network card based on RTL8019AS
CheapSk8 LAN is an 8-bit ISA network card based on the RTL 8019AS chip.
This project was created for cost savings over purchasing older cards on eBay or building other similar projects. This project was done by reverse engineering a 16-bit RTL8019AS board, and finding the bits needed in the datasheet to turn off 16 bit mode.
By sourcing the MagJack and RTL8019AS from Aliexpress, the 93LC46 from eBay, and the discretes from Mouser or Digikey, and the PCB from JLCPCB, the bill of materials for a board is only about $7.50 when you build 20 or more.
Main components on the Cheapsk8 lan
Cheapsk8 lan bill of materials (BOM)
21 components, 15 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RTL8019AS | RTL8019AS | U1 |
| 1 | SST39SF040 | DIP-32_W15.24mm | U2 |
| 1 | 93LCxxC | DIP-8_W7.62mm_SMDSocket_SmallPads | U3 |
| 1 | 20MHz | Crystal_HC49-U_Horizontal | Y1 |
| 1 | Bus_ISA_8bit | BUS_PC | J2 |
| 1 | SI-50170-F | BEL_SI-50170-F | J3 |
| 3 | 0.1uF | C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C1, C2, C3 |
| 2 | 10pF | C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C4, C5 |
| 2 | 22uF | CP_Radial_D5.0mm_P2.00mm | C6, C7 |
| 2 | 0.01uF | C_0201_0603Metric_Pad0.64x0.40mm_HandSolder | C8, C9 |
| 1 | 27k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R14 |
| 1 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R15 |
| 2 | 470 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R16, R17 |
| 1 | 200 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18 |
| 1 | 1M | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19 |
Cheapsk8 lan design files
The KiCad project lives in the zombienerd/cheapsk8_lan repository on GitHub; these links point at the commit this page was built from.
- LayoutCheapsk8_LAN.kicad_pcb
- SchematicCheapsk8_LAN.kicad_sch
Cheapsk8 lan: common questions
How big is the Cheapsk8 lan PCB?
The Cheapsk8 lan measures 153.1 × 66.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Cheapsk8 lan?
21 components, from 15 distinct parts. The full bill of materials is listed on this page.
Where can I download the Cheapsk8 lan design files?
From the zombienerd/cheapsk8_lan repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Cheapsk8 lan design in my own project?
The repository has no license, so all rights stay with zombienerd. Use it as a reference, and ask the author before reusing the design.