Abstract :
Along with the development of an increasingly rapid era, the need for
effectiveness and efficiency is prioritized in various fields. This encourages people
to be creative and innovate in the field of technology. The purpose of this research
is to design a mop robot based on NodeMCU ESP8266 using Android. The results
of this study are that the tool can be operated using Arduino IDE software, the
tool is controlled using the Blynk application which gives orders to the NodeMCU
with a Wi-Fi network connection that has a control distance of 140 meters, the
tool works using a 7,6 VDC battery, battery can supply the components in the
tool, while the components used are 2 relays with a working voltage of 3,3 VDC, a
mop motor of 8,1 VDC and a water pump of 8,2 VDC. Based on the results of the
PWM test, 240 mop robots do not move, when the PWM reaches 255 the mop
robot can move. From the results of 21 overall tests, it is concluded that the mop
robot works according to the button commands on the Blynk application with 100
% accuracy.