This is the UPDATED V2 TZXDuino Shield by Zaxon.

TZXDuino is a cassette player replacement for the Sinclair ZX 80/81/Spectrum, Amstrad CPC, Acorn Electron and BBC, Jupiter Ace (TZX), and ORIC (TAP). It behaves like an ordinary Cassette player except it plays digital TZX/TAP/CDT/O/P/Uncompressed UEF files from a micro SD card.

Zaxon has kindly provided the files so that makers can order his boards from here. This updated version uses larger 12mm switches (Pi build style) and has an integrated motor control socket.

There is a build video (including how to program the Arduino) at : https://youtu.be/kcOVnLOHpYY - Note that this is the V1 design but it is very similar.

Big thanks to Zaxon for the opportunity to share his work :)