This robot is wirelessly controlled uses a metal body. This makes it stable, strong and can be easily installed with additional equlpment by drilling. The drive system uses a crawler design, which makes maneuvering in difficult terrain. Users will learn about belt drives, which are different from wheel drives. Also learned about using a Bluetooth signal as a medium in working control. The advantage of Bluetooth is that it consumes less power than wireless Wi-Fi and is also popular for communicating with mobile phones. Besides that, programming and app control work is also easier than the WiFi system. Therefore, it is very suitable for those who are starting to learn wireless. The JDY33 was chosen as the Bluetooth module because it communicates with a wide variety of devices such as computers, Android mobile phones and IOS systems. The Bluetooth version is 3.0 SPP + BLE4.2 and operates at 2.4GHz frequency. SPP transmission speed is up to 16K bytes/s and BLE type, up to 4 bytes/s. Transmission distance up to 20 meters (in open air), maximum transmit power 6db, and receiving sensitivity -96dbm.
Nano V3.0 board with the microcontroller IC No. ATMEGA328 was selected as a board to control the operation. It has 32KB SRAM 2KB EEPROM 1KB flash memory. The board also has a IC for converting the USB to UART signal to be used to connect to the computer for loading the driver that we wrote. Users can write programs through the Arduino IDE program. With the aforementioned features, it can eventually be developed to operate via the Internet or as we call the Internet of Things or IoT. Regarding the programming of the drivers, users also learn about mechanics such as the operation of gear motors and power transmission belt, learn how to create applications to control robots and learn how to operate electronic circuits.