What wire gauge (awg) for xiao esp32c6

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1

I need to solder wires for my project, what wire gauge (awg) fits in the holes of the xiao esp32c6 and/or shields for xiao esp32c6 ?

2

Hi there,

Yep—here’s the answer for the Seeed XIAO family (SAMD21/RP2040/nRF52/nRF54L15/etc.):

  • Pitch (between pads): 2.54 mm (0.100″). Seeed Studio
  • Row-to-row (center-to-center): 15.25 mm. Seeed Studio
  • Castellated “hole” (semi-hole) diameter: ≈ 1.0–1.1 mm (the half-circles are made from ~1.0–1.1 mm drills). If you’re mounting with header pins, treat them like standard 2.54 mm headers. Seeed Studio
  • Header pin size (the ones Seeed ships): typical square post ~0.64 mm across flats; design 1.0 mm finished hole on your carrier (1.1 mm if you want easier insertion), which aligns with mainstream footprint rules (lead dia + ~0.2 mm). Seeed Studio+1

Short version: use 22 AWG solid. It’s the sweet spot.

Details you can count on:

  • Typical XIAO carrier/headers use ~Ø1.0 mm finished holes.
    • 22 AWG (Ø0.64 mm) → perfect fit.
    • 24 AWG (Ø0.51 mm) → looser but fine.
    • 20 AWG (Ø0.81 mm) → often fits 1.0 mm holes but can be tight depending on plating; don’t count on it everywhere.
    • 18 AWG (Ø1.02 mm) → usually won’t fit.
  • The XIAO’s pads are castellations (half-holes), not true barrels—so you don’t “insert” wire there. If you must wire to the module edge, tack 24–26 AWG solid and add strain relief (wicked solder + hot glue/UV epoxy or tie-down).

HTH
GL :slight_smile: PJ :v: