Two Different Experiments with the Rope-Attached Sphere by Using Arduino

Arduino microcontrollers are electronic devices that can be used in physics experiments, and they are both affordable and readily available in comparison to other experimental sets. Students in high school and college can acquire valuable skills through the usage of Arduino in STEM education applications. In this study, two different physics experiments were conducted with a single, easy to develop, experimental setup by using Arduino, a force sensor and a rope-attached metallic sphere. First experiment, involved several analyses such as period, rope tension, and energy conservation during simple harmonic motion. In the second experiment, the metal ball was released from the rope's connecting point, and the impulse acting on it between the times it was released and when it returned to equilibrium was measured. Analyzes performed are in very precise force and time intervals and the results of all analyzes are consistent with the theoretical values. Educational activities in this direction can both create maximum gains for students in STEM fields in limited education periods and contribute to equality of opportunity in education due to its economic nature.

Using Arduino in Physics Experiments:Determining the Speed of Sound in Air

Considering the 21st century skills and the importance of STEM education in fulfilling these skills, it is clear that the course materials should be materials that bring students together with technology and attract their attention, apart from traditional materials. In addition, in terms of the applicability of these materials, it is very important that the materials are affordable and easily accessible. In this study two open ended resonance tube, Computer and speaker for generate sound with different frequencies, Arduino UNO, AR-054 Sound Sensor, Green LED and 220 ohm resistance were used for measure the speed of sound in air at room tempature. With the help of sound sensor, two consecutive harmonic frequency values were determined and the fundamental frequency was calculated. Using the tube features and the fundamental frequency value, the speed of sound propagation in the air at room temperature was calculated as 386.42 m/s. This value is theoretically 346 m/s. This study, in which the propagation speed of the sound is calculated with very low cost and coding studies with 12% error margin, is important in terms of hosting all STEM gains and can be easily applied in classrooms.