This project is a project that is carried out independently/individually with the theme of IOT. The project created is a tool that can be used to assist UPTTIK staff in monitoring the server room. This project develops IoT using ESP 8266 and several sensors. ESP 8266 is a microcontroller that is used as the brain in the IoT project that was created. There are 3 kinds of sensors that the author uses to create a monitoring system project for the UPTTIK server room, including DHT11, Flame Sensor, and Pir Motion. Esp 8266 is integrated with BLYNK as an application that will help monitor server rooms.
ESP 8266 is an impressive WiFi module with low cost and suitable for microcontroller projects that require WiFi function via UART serial connection. This module can even be programmed to act as a standalone WiFi module without the addition of a microcontroller.
 Figure 1. ESP 8266 |  Figure 2. DHT 11 |
DHT11 is a temperature and humidity sensor, has a digital signal output calibrated with a complex temperature and humidity sensor. The technology ensures high reliability and excellent long-term stability. The microcontroller is connected at a high performance of 8 bits. This sensor includes a resistive element and an NTC temperature measuring device. It has excellent quality, fast response, anti-interference ability and high cost performance advantages.
Flame sensor is one of the fire detection devices through the presence of a flame that suddenly appears. The size of the flame detected was a flame with a wavelength of 760 nm to 1,100 nm. The transducer used to detect the flame is infrared.
 Figure 3. Flame Sensor |  Figure 4. Pir Motion |
Sensor PIR allows us to detect the presence of motion, is used to detect whether a person / object has moved or is out of range of the sensor. PIR sensors are small, inexpensive, low power, easy to use and not easy to damage. That’s the reason they are widely used in home appliances and gadgets. They are often referred to as PIR, “Passive Infrared”, “Pyroelectric”, or “Motion IR” sensors.
The BLYNK application is used as an intermediary for UPTTIK staff with the prototype. To use BLYNK 2.0, some additional code is needed in making the project. The prototype of the use of 5 sensors, namely 1 DHT11, 2 flame sensors, and 2 Pir Motion is shown in Figure 5. The microcontroller that acts as the brain is the ESP 8266 which receives all data from the five sensors and the data will be sent to BLYNK.
 Figure 5. Prototype |  Figure 6. BLYNK SIRUSERV |
BLYNK SIRUSERV has 2 LCDs that can be used to monitor if a fire occurs at the two points that have been designated as two flame sensor locations later, otherwise the fire will eat on LCD 1 it will read Sensor 1 no fire detected so also on the LCD 2 which will display Sensor 2 does not detect any fire. On the other hand, if both sensors detect the presence of fire, both LCDs will read API detected. In this BLYNK there are also two pear motions which are marked with LEDs, if movement is detected then the LED on BLYNK will turn red, if no movement is detected then the LED will be white. After that, there is information about the temperature in the detected server room. There are two types of temperature information, the temperature at that time and the temperature altitude indicator. If the temperature reaches the max, the blue half circle will turn red because it has become a perfect half circle.