Kevin’s exciting project involves creating a budget-friendly linear position sensing system using circuit boards, a microcontroller, and basic math skills. By adapting the technology behind electronic calipers, Kevin explores the concept of using passive PCB scales and capacitive coupling in a unique way. Collaborating with Mitko and implementing firmware to grasp digital signal processing concepts, Kevin delves into the intricacies of caliper theory and microcontroller implementation. His thorough exploration of parameter selection and precision testing reveals surprising insights, such as the influence of ADC sampling frequency on signal detection. The project culminates in the identification of optimal parameters for accurate position tracking.
https://kevinlynagh.com/calipertron/