For this project, the client needed help with the development of an embedded controller for a wearable electronic device. The device is controlled by a small form factor permanent magnet brushed DC motor and operates from a single battery cell. The controller needed to fit within a small size appropriate for a wearable device and needed to include a motor to drive a gear mechanism connected to a variable load. The product also required the load to be moved at varied speeds while being able to stop at a desired position. These requirements as well as many others dictated the use of a small and power efficient microcontroller for the system and motion control firmware. This project presented itself with many challenges in order to meet the system requirements. Some of these challenges and solutions are presented below…
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