2 layers90 × 59 mm
2 layers90 × 59 mm
Underside
torica-org/26th_PCB_Underside機体下電装部のPCB
- Size
- 90 × 59 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 8
- Nets
- 25
- Pads
- 48
- Tracks, vias
- 110, 67
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 May 2026
- Updated
- 21 Jun 2026
Overview
Underside is an open-source printed circuit board by torica-org, from the torica-org/26th_PCB_Underside repository on GitHub. It is a 2-layer board of 90 × 59 mm with 8 parts on 25 nets, routed with 110 tracks and 67 vias.
Its parts include 3 connectors and 2 ICs. It belongs with the SAM D and SAM boards of this library.
README
README.md26th_PCB_Underside
機体下電装部のPCB
Parts
8| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | , | ||
| 1 | Conn_01x03_Socket | Connector_JST:JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal | J2 |
| 1 | Conn_01x04_Socket | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J3 |
| 1 | Micro_SD_Card_Det_Hirose_DM3AT | TORICA_Hardwarelib:microSD_AE-MICRO-SD-DIP | J1 |
| 1 | SeeeduinoXIAO | TORICA_Hardwarelib:XIAO-RP2040-DIP | U3 |
| 1 | TORICA_URAT1 | TORICA_Hardwarelib_self-made:PA_Connector_Post_4Pin | Under_URAT1 |
| 1 | URM-37 | TORICA_Hardwarelib:URM37 | U2 |
Questions
How big is the Underside PCB?
It measures 90 × 59 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Underside use?
8 parts. 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 Underside KiCad files?
From the torica-org/26th_PCB_Underside repository on GitHub, at the commit this page was made from: the board is fm/Underside.kicad_pcb and its schematic Underside/Underside_kicad_26th_new/Underside.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Underside design in my own project?
Its repository states no licence, so its author keeps all rights: ask torica-org before reusing the design.
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