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Simple Mini Expander

The Mini Expander is a small 2-layer board 71 x 108mm. It lacks all 5V logic and RC2014 bus supporting components, and is reduced to only four receptacles for the Z20X bus (3.3V logic) and four decoupling capacitors.

The Mini version could suitable for a very early start with Z20X and without the complexities associated with the soldering of the three SMT level shifters present in the bigger Expander.




Schematic, Bill of Material and Assembly Guide for the Mini Expander, are available for download.

A 3D Step file of the assembled Mini Expander is available to mechanical designers.