Particle Photon 2 — Feather-size board outline and 4 × Ø2.54 mounting holes — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/particle-photon-2/  (sheet CC BY 4.0)
Basis: Particle Photon 2 datasheet, Mechanical specifications, recommended PCB land pattern figure.
Catalog version: 2026-10-20

Overall (mm): length 50.8, width 22.86, height 1.6
- Exact nominal dimensions. PCB 22.86 × 50.80 mm (0.9 × 2.0 in), 1.6 mm; datum is the board centre, bottom on z=0.
- Four mounting holes Ø2.54 (0.1 in) at (±8.89, ±22.86): a 17.78 × 45.72 mm (0.7 × 1.8 in) pattern, 2.54 mm in from every edge.
- Header rows: two single rows of 2.54 mm pitch along the long edges, 20.32 mm (0.8 in) apart, 16 pins on one side and 12 on the other.
- Modelled: outline and holes. Not modelled: header pins, radio module, USB connector and U.FL connector (not dimensioned on the datasheet); corners modelled square.

hole  x mm  y mm  diameter mm
1  -8.89  -22.86  2.54
2  8.89  -22.86  2.54
3  -8.89  22.86  2.54
4  8.89  22.86  2.54

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Particle: Photon 2 datasheet — mechanical specifications — web — Publisher's page; dimensions are facts — https://docs.particle.io/reference/datasheets/wi-fi/photon-2-datasheet/
- Particle (GitHub): particle-iot hardware-libraries — web — Publisher's page; dimensions are facts — https://github.com/particle-iot/hardware-libraries

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/particle-photon-2/index.json
API: https://xemstudio.com/api/geometry?object=particle-photon-2