Used Pittsburgh Modular Timetable in very good condition. Some rack rash. This module is not in production any more.
The Pittsburgh Modular Timetable is essentially a pair of clock dividers that share a common clock and reset.
The divider produces quarter, half, whole & double whole-note divisions of the input signal. The patterns generated in the 2nd section range from the simple (or mundane, even an exact replica of the divider outputs) to the convoluted, depending on several factors – some adjustable in real time, some not.
Even in its basic configuration the Timetable is ‘bent by design’ it takes advantage of what could (should?) be considered errors to provide variations and unpredictable (but not random or chaotic) changes… all tied to a clock. The user can also take the ‘bends’ further by swapping out one, or both, of the CMOS logic chips in the core of the circuit. Changing the logic chip changes the functionality of the Timetable creating a new set of behaviors to explore.
The primary intention of Timetable is to provide timed events, both predictable & inconsistent… a little like the average public transport system.
In practice, you can use the module to provide a set of straightforward divisions or as a whacked out gate spewing lunatic… and of course something, somewhere in the middle. It loves feedback. Sending one of the many outputs back into its CV or Digital control inputs will make it jerk and twist. A Binary system that sometimes gets stuck somewhere between 1 and 0.
A Mod Pack is available separately so it will be easy to try different combinations of logic. It comes with 2 sets of 4 different logic chips, a logic pattern table for each chip, an IC Remover to make swapping out chips a breeze, a sticker, a fancy cardboard box with anti-static foam to keep everything safe, and a secret prize. The logic chips included in the Mod Pack are NOR, NAND, XOR, XNOR.
The Timetable circuit was designed by Thomas O’Connor. His designs are a unique combination of utility and chaos and the Timetable is no different.