Monday, August 21, 2017

Modular Sequencing: 02 - Eight Step Sequence

A rhythmic, eight step gate sequence can be a fruitful starting point for generating more complex patterns.

A 4022 octal counter is driven by a 40106 oscillator. Each counter increment is sequentially sent to one of eight outputs. A set of 8 on / off switches represents the rhythm, visually displayed in sequence using LEDs. The gate output is after the junction of the eight LEDs.

Note that LEDs with built-in current limiting resistors are used to make breadboarding easier. A rhythm loop of less than eight steps can be created by connecting one of the outputs Q1 to Q7 back to the RES pin, as opposed to connecting the RES pin to ground.