Implementation of particulate measuring and SO2 gas based on Android

In the development of science and technology in electronics field. So it can provide inspiration measuring instruments for measurement SO2 Particulates Gas which economic efficient value, so that be used by public levels Sidoarjo Mudflow area. The Android-based system on is an implementation previous developments terms data display visible smartphones accessed remotely or anywhere connected to Wi-Fi internet network. easily take Gas. design this tool consists ESP32 NodeMCU as a microcontroller, Particulate (Dust) sensor MQ136 (SO2) sensor. network facilitate communication between sensors smartphones. test results obtained value 0.104 (mG/Nm3) from with category still at safe level when compared quality standards, 15 ppm detected around Hot Mud. This shows working optimally very sensitive reading level.