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

    Bidirectional H-Bridge Monitoring with ADC-Friendly Differential Output
    microphone CAD equitek E100
    marx generator
    am transmitter double side band
    Solar-Powered High Efficiency Battery Charger
    TV Remote Control Jammer
    Tilt Sensor via Accelerometer Circuit
    Automatic reclosing device program Control Ladder
    Digital precision pressure tester circuit integrated precision pressure signal conditioner MAX1457