Abstract :
Technology is developing fast and undergoing many changes from being just for communication to the internet age. Lily plants are ornamental plants that many people like because of their beautiful flower shapes and beautiful colors. In this era of the internet, people want everything to be instant. It is undeniable that plants need water to thrive. With human nature that wants everything to be easy, a prototype automatic plant sprinkler can be one solution. The prototype automatic plant sprinkler works by measuring soil moisture, and can be monitored via a smartphone with the blynk application. The yl-69 sensor will be a soil moisture meter, which will send data to the central system, namely NodeMcu. Smartphone will be the execution of the tool flush or not. With 10 times testing the tool has no problems to flush according to the commands made in arduino ide. Keywords: yl-69 sensor, nodemcu, prototype, blynk, smartphone