This research aims to design a semi-automatic nutrient solution control system using the NodeMCU ESP8266 microcontroller as an alternative to Arduino in a series of NFT hydroponic systems with pakcoy (Brassica Rappa L.) as an experimental plant. The research was conducted from June 20 to July 17 2023. The implementation was carried out at the Santoso Berkah Hydroponic Garden in Palembang City, …