Prototype design of clean water distribution system on residential scale using Arduino Mega microcontroller

Abstract

Water is a natural resource that plays a very important role in life. Along with the rapid population growth and accompanied by the construction of residential areas, causing a clean water crisis. Bekasi is one example of a city that has a lot of settlements with a dense population but there are some settlements that are not yet guaranteed the availability of clean water. The purpose of this study is to know how the manufacture and system work, understand how to test pH sensors, turbidity, and HCSR04, and know the results of testing Prototype Clean Water Distribution System on a Residential Scale Using Arduino Mega Microcontroller. In the study there were several parameters, namely water quality parameters, namely using pH sensors and turbidity sensors, as well as for water level parameters using HCSR04 sensors. In addition, the system uses several components such as solenoid valve, pump, LCD, and Arduino Mega microcontroller. The method used to calibrate the pH sensor uses pH buffer powder at all three points, namely 4.01, 6.86, and 9.18 to become standard. The output of the pH sensor is the voltage that will be converted into a pH value using a linear equation. In the testing of turbidity sensor is done by referring a condition with 4 pieces of turbidity that is clear water, a little murky water 250 ml mixed with 1/4 tbsp soil, murky that is 250 ml of water mixed with 1/2 tbsp soil, very murky that is 250 ml of water mixed 1 tbsp soil. Then the ADC value of the 4 conditions is created limitation or range of turbidity level. HCSR04 testing uses the star as a reference for HCSR04 sensor calibration. Based on the test results on the pH sensor obtained the best error value at the point of 6.86 with a value of 0.7%. In the turbidity sensor obtained the best range in clear conditions that is at a range of more than 727. On the HCSR04 sensor obtained the best error value at the point of 18 cm by 0.05%. The results of the system test will be displayed on the LCD.