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Figure 1 Front and back views of two BLDC platter motors used in 3.5” hard drives.

Repurposing Old Disk Drives For Rotary Encoders

Using a Teensy LC Microcontroller In most modern computers, 3.5” hard drives have been replaced with faster, higher capacity, solid-state drives. In this article, Brian tells us how he repurposed an old 3.5” drive to make a rotary encoder for his music studio, using a Teensy LC MCU and an LM399 quad comparator. For many […]
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