Main Article Content
The monitoring system in nutrient solution is something that must be considered in the process of hydroponic cultivation, because it is from this nutrient solution that ensures the result and quality of the hydroponic plant itself. Important variables such as acidity, temperature and concentration of nutrient solution are the values that determine whether or not the nutrient solution will be given to the hydroponic plant. Important variables in improper nutrient solutions will make the hydroponic cultivation process for crop failure. This research uses a PH sensor that serves to detect the acidity level of the nutrient solution and the DHT11 temperature sensor which functions to read the condition of the nutrient solution temperature and the TDS sensor detects the concentration of the nutrient solution. The microcontroller used is the type of Atmega328 which is used as a processing of all inputs and outputs. This monitoring system is connected to the internet so that all sensor reading values can be viewed through an Android phone and can be accessed via the Web, so that the monitoring process can be done remotely. From the test results obtained prove that this system has been successfully integrated and is able to work well according to the desired target, which can monitor the acidity and temperature conditions in hydroponic plants that can be accessed directly through mobile phones and has been integrated with the internet network.
Keywords— automation; monitoring; cultivation; hydroponics; internet
 Anchit Garg dkk, Application of Soil Moisture Sensor in Agriculture, Proceedings of Internation Conference on Hydraulic, India, December 2016.
 Yudhaprakosa, Akbar, Maulana, Sistem Otomasi dan Monitoring Tanaman Hydroponic Berbasis real Time, Jurnal Pengembangan Teknologi Informasi dan Ilmu Komputer, Vol. 3, Issue. 4, April 2019.
 M.F.Saaid, Sanuddin, Megat Ali, Automated PH Controller System for Hydroponic Cultivation , IEEE Symposium on Computer Applications & Industrial Electronics (ISCAIE), 2015.
 Kulkarni, Sambhaji, Venkatesh, Rajiv, Automation of Hidroponic System, International Journal Of Science Technology & Engineering, Vol. 3, Issue. 9, March 2017.
 Sonia Joshi, Gujar, Automation in Hydroponic System using Control Circuit, International Journal Of Innovative Research in Science Engineering & Technology, Vol. 7, Issue. 10, October 2018.
 Sahin, Ozkan, An expert System Design and Application for Hydroponic Greenhouse Systems , Gazi University Journal of Science, Vol. 2, 2014.
 Wiedjaja, Suryadiputra, Lucas, Hydroponic System with Real Time OS Based On Arm Cortex-M Microcontroller, The International Conference on Eco Engineering development, 2017.
 Datasheet DHT11,
https://www.mouser.com/ds/2/758/DHT11-Technical-Data-Sheet Translated-Version-1143054.pdf, diakses dari e-book pada 01 September 2019.
 Datasheet PH Sensor, https://cdn.sparkfun.com/datasheets/ Sensors/Biometric/ph-bta.pdf, diakses dari e-book pada 01 September 2019.
 Datasheet TDS Sensor, https://media.digikey.com/pdf/Data%20Sheets/DFRobot%20PDFs/SEN0244_Web.pdf, diakses dari e-book pada 01 September 2019.
 Datasheet Mikrokontroler AVR Atmega328, https://www.sparkfun.com/datasheets/Components/SMD/ATMega328.pdf, diakses dari e-book pada 01 September 2019.
 Datasheet ESP32, https://cdn.sparkfun.com/datasheets/IoT/esp32_datasheet_en.pdf, diakses dari e-book pada 01 September 2019.