The research aims to design an automatic nutrient control system based on Wemos D1 R2 ESP8266 which can be monitored wirelessly using Wifi media in a floating hydroponic system. The study used pakcoy (Brassica Rappa L.) seeds as a trial plant. The research was conducted from 12 June to 4 August 2023. The implementation was carried out in the yard of residents' homes in the city of Prabumulih, W…