Design and Development of Printed Circuit Board (PCB) for Smart Calorie Counter System

Awareness of calorie intake among people has increased due to health concerns. An inappropriate amount of calorie intake may affect our health. Daily recording of food consumed helps calculate calorie intake. However, busyness and forgetfulness are problems faced in the daily recording. Therefore, a ß-version smart calorie counter prototype was developed for daily recording. However, the accuracy and consistency of measurements are influenced by easily loosen wire connections and the instability of components. A printed circuit board (PCB) is designed and developed to improve the stability and accuracy of the counter. This prototype tracks between components are designed. After comparing 2-layer PCB with 4-layer PCB, the 2-layer PCB design is chosen and sent to the manufacturer. The printed PCB is tested and troubleshot. 2-layer PCB with dimensions 10cm by 11cm is developed as it has a cheaper printing cost. From the result, the accuracy of this prototype is better than the ß-version-prototype with an accuracy of 99.85% and an average percentage error of 0.15%, but the ß-version prototype had an accuracy of 99.64% and average percentage error of 0.36%.