The development of electronic technology in the era of globalization is very rapid. Utilization of this technology as a means to monitor soil conditions for agriculture, especially hydroponic plantations which are currently developing, to obtain optimal results it is necessary to monitor humidity and temperature conditions. This research will create a system that can maintain humidity and air temperature according to what plants need. The tools made consist of a temperature sensor, humidity sensor, ATMega328 microcontroller, ADC and water pump. Temperature and humidity sensors function to detect air temperature and humidity. The ADC functions to convert the voltage measurement results from temperature and humidity measurements into digital quantities which are then forwarded to the ATMega328 microcontroller to be processed into a digital display on the LCD. The ATMega328 microcontroller also regulates the ON and OFF of the water pump machine.

Research has been done about the relocation of earthquake hypocenter position, seismic wave local velocity and correction of seismic wave recording station at the Abang-Culik Fault area according to coordinate 115,25°-115,75° BT and 8,00°-8,60° LS. Data which was used on this research was the earthquake data that occur in the 2015-2020 period. The research was conducted using the coupled velocity-hypocenter method. From the relocation result, the position of the earthquake hypocenter shifted, which initially spread to become more concentrated in the fault plane area. The local velocity decreasing a lot in the 3rd layer which was influenced by the presence of the Mount Agung magma pocket in that area. The correction of Station shown that only 1 station has a negative value of delay time, namely IGBI station while the other 13 stations show a positive value of delay time.