Build Your Own Synth Sequencer (CD4017 Tutorial for Beginners)

In this episode, we’re building a 10-step sequencer using the legendary CD4017 Decade Counter / Divider — one of my favorite ICs for creating rhythmic patterns and step-based control in DIY synths! You’ll learn exactly how the CD4017 counts from 0 to 9, how to feed it a clock signal (from the VCO we built in the previous video), and how to connect LEDs to visualize each step of the sequence in real time. 🔧 Parts Used: CD4017 Decade Counter IC CD4046 or CD40106 Oscillator (as clock source) 10 LEDs + 1 kΩ common resistor 9 V battery or 12 V DC power supply Potentiometer (10 kΩ) 100 µF capacitor Breadboard + jumper wires 💡 What You’ll Learn: How the CD4017 divides clock pulses into 10 outputs How to connect LEDs to visualize sequencing How to control speed via a potentiometer (clock frequency) How to use the reset pin to shorten your sequence (e.g., 8-step sequencer) 👉 Pro Tip: connect the reset pin to a rotary switch for adjustable sequence length, or pair this circuit with a VCO (CD4046) to make a full analog audio step sequencer! ⚡ Watch Next: Build a Simple VCO with CD4046 – DIY Synth Tutorial : https://www.youtube.com/watch?v=SCemzB7GonE Materials + Schematic : https://www.facebook.com/notes/philstudio/season-1-episode-3-easy-sequencer/1662230830458847 Datasheet : http://www.ti.com/lit/ds/symlink/cd4022b.pdf #cd4017 #diysynth #electronicsprojects