This writing discusses the Movement and Thought of Hizbut Tahrir Indonesia, where the Movement and Thought of Hizbut Tahrir Indonesia includes the profile of the founder of Hizbut Tahrir Indonesia, the background of the founding of Hizbut Tahrir Indonesia, the history of Hizbut Tahrir Indonesia, and how the religious understanding of Hizbut Tahrir Indonesia. Hizb ut-Tahrir is one of the contemporary Islamic movements that are quite influential in the Islamic world. Unlike other Islamic movements, Hizb ut-Tahrir claims to be a political party. But unlike the political parties in general, Hizb ut-Tahrir is an Islamic political party based on transnationalism, so that it deals with its political ideals that seek the whole Islamic world within a system of political power called the Caliphate.

Nationalism is the longing for its homeland (nationalism of longing), or the necessity of fighting to liberate the homeland from imprealism (nationalism of honor and freedom), or strengthening its intercommunity bonds (nationalism), or liberating other countries (liberation nationalism) , these things are something that is fitrah and acceptable and even some are regarded as obligations. On the contrary, if nationalism is meant to divide the Muslims into groups so that they become hostile to each other, then people are exploited to fulfill personal ambition (party politics), then it is certainly fake nationalism that will not give any benefit. The main nationalism is nationalism that opens up to the role of revelation. Devotion to the nation and state is worship. But he denounces narrow and oppressed nationalism, because then the excessive love of the nation will give rise to the pride and pride of the nation.

Spider robot is controlled using ATMega32 microcontroller and programmed using C language on CV AVR Software. This robot is designed to help people in the fire fighting in the fire accident. This robot has 3 ultrasonic PING sensors that are placed on the front, right and left as a distance detector to regulate the movement of the robot and a flame detector sensor that is placed on the front as a fire detector. Robot also has 2 work modes that are manual mode and automatic mode. Manual mode is a mode where the movement of the robot is ordered to use the remote bluetooth with 7 meters of maximum distance, while the automatic mode is the mode where the movement of the robot fully using PING ultrasonic sensors. From the results of fire detection testing, the robot is able to detect the presence of fire less than 20 cm, in that position the robot will stop and turn on the fan automatically. Furthermore, from the results of robot movement testing, the robot detects the presence of obstacle as far as 20 cm, in that position the robot will stop and it will read the ultrasonic sensor PING on the right and left to decide the next movement.