Reviving a traditional Sony PS-X75 document participant with Arduino

In 1979, Sony launched the PS-X75 turntable. It shortly gained reputation because of its high-fidelity sound output and ease of use. It was straightforward to make use of as a result of it was absolutely automated–a standard function as we speak, however one thing that was fairly thrilling on the time. To carry out that automation, the PS-X75 contained an built-in circuit that detected document dimension, dropped the needle, and so forth. However that IC was liable to failure. To revive their Sony PS-X75 turntable, MKB-1 used an Arduino Mega to interchange the unique circuit.

In contrast to earlier turntable designs, which had been usually fully electromechanical, the PS-X75’s IC controls virtually all the turntable’s features digitally. That signifies that when the IC fails, the turntable turns into inoperable. Alternative ICs are virtually unimaginable to seek out and haven’t been manufactured in a few years. For most individuals, which means that the PS-X75 turns into e-waste when that IC bites the mud. However MKB-1 has some reverse-engineering ability and was capable of save their PS-X75 by swapping out unique IC for an Arduino Mega.

MKB-1 was capable of obtain this spectacular feat by fastidiously finding out the unique PS-X75 service guide, which included detailed schematics and particulars on every operate’s electrical operation. With this information, they replicated all 42 of the unique IC’s connections on an Arduino Mega 2560 improvement board. They selected the Mega as a result of it had sufficient I/O pins accessible to deal with all of these connections. Their customized Sketch handles all the unique performance, from studying button presses to reducing the tone arm. When you personal a PS-X75, MKB-1’s detailed Instructables tutorial will stroll you thru learn how to carry out this retrofit.