Stopwatch is designed to quantify the elapses time between the start activation and deactivation. To ensure the precision of the time taken, calibration of the device is essential. National Institute of Standard and Technology (NIST) has provide complete guidelines on the stopwatch and timer calibration. However, the standards guidelines usually use manual calibration personnel hence may possibly cause inefficiency for calibration works. The 'Stopwatch Verification Platform' is a prototype aimed to replace the manual handling of digital stopwatch calibration with an automated timer-controlled device, without interfering with NIST recommended practice. The 'Stopwatch Verification Platform' is able to automatically trigger start and stop the reference and test stopwatches by integrating with precise timer controller and specific relay connections. The timer controller circuitry is integrated with the reference stopwatch circuitry, with 0.001 second resolutionIt is capable in verifying more units of stopwatches by using one reference. The measurement procedures do not contradict with the NIST recommended practice. This prototype does not alter the uncertainties calculation because it is a well-developed standard formula which is set by international standard

Laplace Transform equation is greatly used to solve the differential equation. Laplace Transform has been an integral part of the Control System, Engineering Mathematics, and Signal and System syllabus. Although the importance of Laplace Transform is significant, it can be seen that the students are still struggling with this topic. This project aims to address this by creating a low cost and interactive electronic board that translate the models the electrical circuit to its Laplace domain. The objective of this project is to provide a student to an alternative software simulator for student to simulate the electrical circuit model. This educational kit helps students to obtain the transfer function of the system from the circuit via a tactile-based educational kit named Laplace Circuit Solver. The development of the teaching aid is explained extensively where the main component used is Arduino Mega while the output is display using TFT LCD screen. The flow of this project is firstly the user need to push the push button and the green LED will on. After that, the user should insert the component and the red LED will on. During that time, the buzzer will ring. After a moment, the green LED will turn on and the screen will display the equation. Finally, the equation displayed will follow the inserted component. The teaching aid is verified by testing all the possible scenario and the result indicates that the teaching aid produce the expected output.