MAKE FIRE ROBOT Fire extinguisher robot is a robot that can find the whereabouts of the hotspots are in a room within a room. This robot is used as firefighting robots by looking for hotspots that will at the end of the robot will return to the starting position the robot. In the present study, the process of making the robot is divided into two, namely on the mechanical and software (the software). Mechanical part consists of a series of transmitters and receivers of ultrasonic sensors, infrared sensors, fototransisitor, a series of operational amplifiers (op-amp), comparator circuit (comparator), and a series of ADC (Analog to Digital Converter). While the software (software) that we have designed consists of the minimum system that will be linked or coupled with the mechanics of robots and designing programs that will run the robot.

Robot pencarin hotspots are made like a toy car that has three wheels. Two wheels are located next to the robot body is in motion by two stepper motors, the third wheel serves as a buffer which can rotate kesegala direction. The robot will move in accordance with a program that has been made ​​in the microcontroller to perform all the activities of the robot. This study used DT51 using microcontroller 8051 - Atmel AT89C51-made which is the family of the Intel 8051 microcontroller. AT89C51 is a CMOS 8 bit microcontroller with 4 Kbytes Flash Programmable and Erasable Read Only Memory (FPEROM). While the program design created using C language