Most development boards for MCUs will have 0.025" square pins spaced 0.1" apart.
That equates to a 0.635 mm (0.6 probably close enough) square pin, spaced 2.54 mm apart.
What you usually find
Most development boards for MCUs will have 0.025" square pins spaced 0.1" apart.
That equates to a 0.635 mm (0.6 probably close enough) square pin, spaced 2.54 mm apart.