Daftar Isi:
  • Monitoring the use of water pumps can be viewed using ultrasonic sensors and combined with microcontroller NodeMCU by monitor changes of the water level periodically. This project consists of several main parts: the microcontroller NodeMCU, HC-SR04 ultrasonic sensor, pin cable, MiFi, and power 5volt. This project was designed with a simple work. It works to measure the water level. The measurement results from ultrasonic sensors and then uploaded to the server on the internet using a microcontroller NodeMCU connected to the MiFi. Ultrasonic sensor data from IoT broker www.agnosthings.com copied to a txt file and then read through a php program uses data structure arraylist of the data can be determined result of the water pump.