via Tape_Tilde on instructables
This Instructables will teach you how to make a programmable pitch sequencer for any cassette tape machine, using Pulse Width Modulation (PWM) from a Raspberry Pi Pico. By the end of the project you will be able to add pitch and volume automation to your tape loops, using a custom OLED interface and a single rotary controller.
If you have been wanting to add a pitch mod to your tape machine but haven’t been sure how, or if you’re looking to upgrade your existing pitch mod, this tutorial will guide you through the process from start to finish, including some background theory, and links to scripts and resources.
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