RAKSHAK
Technical Details

Components & Architecture

Explore the detailed technical breakdown of every major hardware and software component powering the RAKSHAK autonomous surveillance rover.

Hardware & Sensors

Key Components

Each module is carefully selected and integrated for optimal performance, reliability, and expandability.

NVIDIA Jetson Nano
The Jetson Nano is the main onboard computer, responsible for running AI models, computer vision, and sensor fusion. It features a quad-core ARM Cortex-A57 CPU and a 128-core Maxwell GPU, making it ideal for real-time inference and robotics applications.

Specifications

  • CPUQuad-core ARM Cortex-A57
  • GPU128-core Maxwell
  • RAM2GB LPDDR4
  • Storage128GB eMMC
  • OSUbuntu 18.04 with JetPack
  • ConnectivityGigabit Ethernet, USB 3.0
Pixhawk Flight Controller
Pixhawk is an advanced open-source flight controller used for precise motor control, sensor integration, and autonomous navigation. It interfaces with the Jetson Nano for high-level commands and handles low-level real-time tasks.

Specifications

  • Processor32-bit ARM Cortex M4
  • SensorsAccelerometer, Gyroscope, Magnetometer, Barometer
  • I/OPWM, UART, I2C, CAN
  • FirmwarePX4/ArduPilot
RPLIDAR A1
The RPLIDAR A1 is a 360-degree 2D laser scanner (LIDAR) used for mapping, obstacle detection, and SLAM (Simultaneous Localization and Mapping). It provides real-time distance measurements to help the rover navigate complex environments.

Specifications

  • Range0.15m - 12m
  • Scan Rate5.5Hz (default)
  • Angular Resolution
  • InterfaceUART/USB
YDLIDAR OS30A
The YDLIDAR OS30A is a secondary LIDAR sensor, providing additional data for redundancy and improved mapping accuracy. It is especially useful for detecting obstacles at different heights.

Specifications

  • Range0.1m - 30m
  • Scan Rate10Hz
  • Angular Resolution0.25°
  • InterfaceUSB
GPS M8N
The GPS M8N module provides accurate positioning for outdoor navigation and patrol route tracking. It supports multiple satellite systems for improved reliability.

Specifications

  • Accuracy2.5m CEP
  • Update Rate1-10Hz
  • Satellite SystemsGPS, GLONASS, QZSS
  • InterfaceUART
Logitech C270 Webcam
A 720p HD webcam used for real-time video streaming, computer vision, and intruder detection. It is mounted on a gimbal for adjustable viewing angles.

Specifications

  • Resolution720p (1280x720)
  • Frame Rate30 FPS
  • InterfaceUSB 2.0
Waveshare DDSM 115 Motors
High-torque DC motors for robust locomotion, enabling the rover to traverse rough terrain and obstacles.

Specifications

  • Voltage12V
  • Torque11.5kg.cm
  • Speed100 RPM
Waveshare DDSM HAT-A Motor Controller
A motor controller HAT for precise speed and direction control of the DDSM motors, interfacing with the Jetson Nano and Pixhawk.

Specifications

  • Channels2
  • Max Current10A/channel
  • InterfaceI2C, UART
Brushless 2-Axis Gimbal
A brushless gimbal system for stabilizing the camera, allowing smooth video capture and dynamic tracking of objects.

Specifications

  • Axes2 (Pitch, Yaw)
  • ControlPWM/Serial
  • PayloadUp to 250g
LiPo 5200mAh 14.8V Battery
A high-capacity lithium polymer battery providing up to 3 hours of operation, with built-in safety features.

Specifications

  • Capacity5200mAh
  • Voltage14.8V
  • ChemistryLiPo
  • Runtime~3 hours
Communication Modules
Multiple communication modules for robust connectivity, including Wi-Fi, Bluetooth, long-range radio, and RC.

Specifications

  • Wi-Fi802.11ac Dual-Band
  • Bluetooth5.0 BLE
  • Radio915MHz Long Range
  • RC2.4GHz Long Range
  • RangeUp to 1km