Revox A700 restoration with help from the ESP32

Restoration of a Revox A700 where I replace three failed TCA561 ICs with an ESP32 dev board.
This is my first major YouTube video and only my second 'Arduino' project.

When these problems arose I quickly became excited to start this project because it coincidentally utilises (a) my lifelong electronic hobbyist skills, (b) a recent interest in Arduino programming and (c) work experience I gained in the early 1980s at customer's sites tuning dynamometer control systems 'live' while being driven by their engines and turbines.

However, the reel motor drive amplifiers need a complete redesign as they don't correctly match the ESP32's 0-3V output to 0-100% motor torque.  As such, I won't be releasing any further details until I correct that deficiency, probably before the end of 2023.

EDIT Sept 2023: Improvements have been made to the amplifier and code.  I've posted the schematics on the TapeHeads forum: https://tinyurl.com/yufmnfh8
If anyone decides to replicate this, PM me on the forum with a photo of your work and I'll send you the code.