4 step 4017 sequencer


Posted on Feb 6, 2014

This weeks project is a simple 4-step sequencer based around a 4017 decade counter chip. The basic schematic is based on this circuit, using a 555 timer as a clock source: I changed it a bit by having the 4017 outputs drive transistors that switch current to the pitch pots (instead of turning on LEDS). Also, I triggered the chips RESET on step 4 i


4 step 4017 sequencer
Click here to download the full size of the above Circuit.

nstead of using all ten steps. The sound is generated by a toy piano that I hacked up. Each of the four steps in the sequencer is routed through a 100K pot that varies the resistance to the piano and triggers different notes. I also threw in a touch point for garbling up the sound.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Dual DC motor speed control
    silicon fuzz
    ttl three state logic probe circuit
    9V fm transmitter circuit design using transistors
    HF Transreceiver using NE612



    Top