Tuxkeychain
About the Tuxkeychain PCB
Tuxkeychain is an open source PCB design by electron271, published on GitHub under the CC-BY-SA-4.0 license. It is a 6-layer board measuring 50 × 60 mm, with 45 components from 25 distinct parts.
Other key parts include the F1C100s, TLV76701DRVx and W25Q128JVS. By type, the board carries 19 capacitors, 12 resistors, 5 ICs, 3 connectors, 2 switches and 1 transistor.
From the project
Keychain shaped like Tux that can run Linux.
Unfortunately this is more expensive than usual due to tariffs and inflation. (Probably cheaper in other countries.)
NOTE: This is still in the prototype stage, changes to the design are likely.
*You can probably find them on other chinese distributors, but I don't know which ones.
Schematic heavily based on the business card design by thirtythreeforty (https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/businesscard.pdf).
Main components on the Tuxkeychain
Tuxkeychain bill of materials (BOM)
45 components, 25 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | F1C100s | QFN-88_EP_10x10_Pitch0.4mm | U4 |
| 3 | TLV76701DRVx | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U5, U7, U8 |
| 1 | W25Q128JVS | SOIC-8_5.3x5.3mm_P1.27mm | U6 |
| 1 | 2N7002 | SOT-23 | Q2 |
| 1 | 24MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | Amphenol_10104111 | CONN_10104111-0001LF_AMP | J1 |
| 1 | EXPANSION | Jushuo_AFC07-S15FCA-00_1x15-1MP_P0.50_Horizontal | J3 |
| 1 | Solder Pads | SolderPads12 | J5 |
| 1 | SMD0805B050TF | Fuse_0805_2012Metric | F1 |
| 1 | RESET | SW_SPST_B3U-1000P | SW1 |
| 1 | FEL | SW_SPST_B3U-1000P | SW2 |
| 1 | LED (RED) | LED_0603_1608Metric | D1 |
| 4 | 2u2 | C_0402_1005Metric | C3, C19, C21, C23 |
| 8 | 100n | C_0402_1005Metric | C4, C5, C6, C7, C8, C12, C13, C14 |
| 2 | 1u | C_0402_1005Metric | C15, C16 |
| 2 | 30p | C_0402_1005Metric | C17, C18 |
| 3 | 22u | C_0402_1005Metric | C20, C22, C24 |
| 2 | 2k2 | R_0402_1005Metric | R7, R8 |
| 1 | 3k3 | R_0402_1005Metric | R9 |
| 1 | 330 | R_0402_1005Metric | R10 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 49k9 | R_0402_1005Metric | R11, R12 |
| 3 | 150k | R_0402_1005Metric | R13, R15, R17 |
| 1 | 470k | R_0402_1005Metric | R14 |
| 1 | 56k | R_0402_1005Metric | R16 |
| 1 | 330k | R_0402_1005Metric | R18 |
Tuxkeychain design files
The KiCad project lives in the electron271/tuxkeychain repository on GitHub; these links point at the commit this page was built from.
- Layouttuxkeychain.kicad_pcb
- Schematictuxkeychain.kicad_sch
Tuxkeychain: common questions
How big is the Tuxkeychain PCB?
The Tuxkeychain measures 50 × 60 mm, has 6 copper layers and is 1.6 mm thick.
How many components are on the Tuxkeychain?
45 components, from 25 distinct parts. The full bill of materials is listed on this page.
Where can I download the Tuxkeychain design files?
From the electron271/tuxkeychain repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Tuxkeychain design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which electron271 chose for the repository.
