Audio Simplex System Module
A restaurant counter communication system built around a motherboard and plug-in daughter boards. The project page includes the recovered three-dimensional assembly and the history of the ROBOT-built system.
LearnTronics
Projects
These are complete electronic projects rather than individual components. Each project includes its background, circuit information, and an interactive VRML model that can be rotated and examined in the browser.
µ-Amp
µ-Amp Guitar Preamplifier
A compact, battery-powered onboard guitar preamplifier built around a single NE5534 op amp. Explore both the original and updated printed circuit boards, then review the circuit description and design notes.
Additional completed circuits and practical examples can be added here as they are recovered or documented.