keypad

Version 2C:

100mm x 60mm

Small enough for cheaper PCB costs

Problems:

Mounting holes too close too switches

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Version 2B:

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49 keys, 120 mm x 55 mm board

Improved button spacing, better mounting hole placement

Problem: Itead Studio want boards <10 cm (100mm)

Need to move mounting holes, and squeeze buttons together a bit…

Version 2A:

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44 keys, 10cm x 5cm board

Improved button spacing, better mounting hole placement

Version 1:

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49 keys, 10cm x 5cm board