Currently, at PGRI Ronggolawe Tuban University, tracer studies are still using google forms which aim to collect alumni data. It is still not effective and has many shortcomings in order to solve the problem, a UI/UX e-tracer study design was made using the double diamond method. The double diamond method is used by researchers to conduct usability evaluation tests on old tracer studies using the System Usability Scale (SUS) and the User Experience Questionnaire (UEQ). The SUS results obtained from Google's old tracer study form are 49 (grade F) while the E-Tracer Study results are 82.6 (grade B) and the results from the UEQ show an attractiveness scale from 0.41 to 2.04, pepisicuity scale 0.21 to 2.28, efficiency scale 0.23 to 2.18, dependability scale 0.51 to 1.80, stimulation scale 0.54 to 2.13, and novelty scale -0.09 to 1.88. This proves that UI/UX design in E-Tracer Study resulted in an increase in usability

Infus adalah suatu alat yang digunakan untuk memasukan cairan obat kedalam tubuh, infus membutuhkan pengawasan yang tepat dan akurat supaya tidak terjadi masalah – masalah, seperti infus macet yang dapat mengakibatkan gejala dan komplikasi. Dari permasalahan tersebut, penulis membuat alat untuk memonitoring infus pasien yang macet dari ruang perawat, kelebihan dari alat ini dapat memonitoring kemacetan infus dari jarak jauh dengan memanfaatkan Nrf Wireless communication sebagai perangkat mengirim dan menerima data. Hasil penelitian dari cara kerja alat ini diperoleh bahwa, dalam alat terdapat 2 jenis kemacetan infus yaitu untuk anak – anak dan orang dewasa , dimana untuk anak – anak menggunakan parameter 2,5 detik tanpa tetesan dan untuk orang dewasa menggunakan parameter 2 detik tanpa tetesan , pada alat ini terdapat identitas nomor pasien, jarak NRF24L01 Transmiter dan NRF24L01 Receiver dalam alat yang di buat adalah sejau 50 Meter luar ruangan dan 25 Meter dalam ruangan, kemudian alat ini juga dapat mendeteksi tetesan tetapi tidak dapat merekap dan menampilkan jumlah tetesan.

Coding is an instruction written using a particular programming language. Coding is currently the most important part of developing technology and applications in today's digital era. In this independent curriculum students are expected to be able to think critically and be able to solve the problems they face and have intellectual intelligence. Scratch Jr. is an application used for basic coding learning for ages 5-7 years. With coding can develop intellectual intelligence in thinking logically in solving problems.

Tsunamis are natural events that can occur any time without prior warning. Some mitigation efforts both through physical construction consist of sea wave height detection sensors such as DT-Sense Barometric Pressure & Temperature sensors, Infrared sensors, and ultrasonic sensors. However, the sensors have a low accuration and difficult installation. Therefore a device designed to provide temperature and air pressure data based on a microcontroller with higher accuracy, and easier installation. The device are made using a DS18B20 temperature sensor, then air pressure using BMP180 sensor. Sea wave height measurement system based on the working principle of air pressure at sea level. This tool is able to work well at altitudes with a minimum temperature of 25 degrees Celsius. Based on the results of air trials on water levels obtained every 0.1 meter increase in sea air, air pressure increases by 0.02 mb (millibar) or 0.12 mb / meter. While testing the air pressure against the temperature obtained is higher, the air temperature at sea level will increase. Each time the air pressure changes by 1.00 mb, the air temperature at sea level will change an average of around 0.46 degrees Celsius. In other words if the temperature decreases around 1 degree Celsius, then the air pressure also drops by 2.00 mb or around 16.67 meters.