Tuesday, December 13, 2011

More on the cd4018

By connecting some of the outs of a 4017 counter to the jam inputs of the 4018, you can get some very interesting patterns quite easily.  My setup for this track:
  • 1 oscillator to clock the 4017
  • 2 oscillators for the Clock and Data inputs of the 4018
  • 5 outs from the 4017 (pins 3,2,4,7 and 10)
  • Pin 1of the 4017 is connected to the Reset pin of the counter
  • Pin 13 of the 4017 is tied to ground; pin12 no connection
There is the addition of the 4040 and 4052 to add some texture to this track.

This track uses a modded Danelectro Slapback Delay pedal which then goes out to my Vox Pathfinder amp, and then Line Out to my Mac running Audacity.

Here's is a stripped down example of the 4017 and 4018 without any other cmos action other than clock and data sources for the 2 ics.


  1. Hi, do you have a schematic?

  2. Hi there! I do not have a schematic for the 4018 I'm afraid. With these chips, I just follow the datasheet as a starting point to find which pins are ins and which are outs. What pin is a Data or Clock input.

    The 4018 has Jam inputs which ultimately act as switches to determine how much the 4018 divides down to. There are a few outs on this ic that can be sent out to an r/2r ladder or directly to your mixer. Pick an out that has the sound you find pleasing or run a number of them to other logic.

    All this means: in Lunetta style building, we are interested in datasheets more than schematics because schematics represent a finished, polished design. Lunettas are more "open" in design and offer you and I the possibilities of new sounds instead of chasing "The" sound.