YAZSAKI JROK ZX Spectrum Keyboard Interface sleeve case

pinshape

This is a sleeve-type case for an external Sinclair ZX Spectrum Keyboard Interface developed by JROK and published on the website http://www.jrok.com/project/speckey/spec_key.html. The case consists of a main part and a cap that tightens to it with a single 2mm screw. To ensure a secure fit, you can add glue to the corners if the cap does not snap perfectly into place. Inside, the PCB features rails, and FR-4 thickness is expected to fit smoothly. However, please note that this interface will not function without a bus expansion (e.g., http://divide.cz/index.php?y=rozdvojka.en) on newer versions of the ZX Spectrum (+, 128k, +2/3). This limitation arises from the design of the PCB, which causes the CPLD socket and PS/2 connector to collide with the computer case. Designed using FreeCAD v0.14, the model was printed on a RepRap printer with a Prusa I3 configuration, utilizing 0.35mm resolution without rafts or supports.