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Elisa 3-Bot Full Package

GCtronic

Elisa 3-Bot Full Package

$ 1,392.00

Elisa 3-Robot Full Package


Elisa Full Package includes

  • Three Elisa (version 3) robots
  • One Elisa Triple Charger
  • One Elisa Control Radio

Elisa (version 3) is an evolution of the Elisa micro robot based on a different micro-controller and includes a comprehensive set of sensors:


  • Atmel 2560 microcontroller (Arduino compatible)
  • Central RGB led
  • 8 green leds around the robot • IRs emitters
  • 8 IR proximity sensors (Vishay Semiconductors Reflective Optical Sensor)
  • 4 ground sensors (Fairchild Semiconductor Miniature Reflective Object Sensor)
  • 3-axis accelerometer (Freescale MMA7455L)
  • RF radio for communication (Nordic Semiconductor nRF24L01+)
  • Micro USB connector for programming, debugging and charging
  • IR receiver
  • 2 DC motors
  • Top light diffuser
  • Selector

More details on elisa 3 wiki

Robot Charging


The robot is able to self charge using the charger station. The Elisa can be piloted in the charger station in order to be automatically self charged; there is no need to unplug the battery for charging.


The microcontroller is informed when the robot is under charge and this information is also transferred to the PC in the flags byte; this lets the user be able to pilot the robot to the charger station and be informed when it is actually being charged. Moreover the robot is also charged when the micro USB cable is connected to a computer.



Hardware Features


Feature

Technical Information

Size, weight

50 mm diameter, 30 mm height, 39 g

Battery, autonomy

LiIPo rechargeable battery (2 x 130 mAh, 3.7 V). About 3 hours autonomy. Recharging time about 1h e 30.

Processor

Atmel ATmega2560 @ 8MHz (~ 8 MIPS); 8 bit microcontroller

Memory

RAM: 8 KB; Flash: 256 KB; EEPROM: 4 KB

Motors

2 DC motors with a 25:1 reduction gear; speed controlled with backEMF

Magnetic wheels

Adesion force of about 1 N (100 g) depending on surface material and painting. Wheels diamater = 9 mm Distance between wheels = 40.8 mm

Speed

Max: 60 cm/s

Mechanical structure

PCB, motors holder, top white plastic to diffuse light

IR sensors

8 infra-red sensors measuring ambient light and proximity of objects up to 6 cm; each sensor is 45° away from each other. 4 ground sensors detecting the end of the viable surface (placed on the front-side of the robot)

IR Emitters

3 IR emitters (2 on front-side, 1 on back-side of the robot)

Accelerometer

3D accelerometer along the X, Y and Z axis

LEDs

1 RGB LED in the center of the robot; 8 green LEDs around the robot

Switch / selector

16 position rotating switch

Communication

Standard Serial Port (up to 38kbps) Wireless: RF 2.4 GHz; the throughput depends on number of robot: eg. 250Hz for 4 robots, 10Hz for 100 robots; up to 10 m

Remote Control

Infra-red receiver for standard remote control commands

Expansion bus

Optional connectors: 2 x UART, I2C, 2 x PWM, battery, ground, analog and digital voltage

Programming

C/C++ programming with the AVR-GCC compiler (WinAVR for Windows). Free compiler and IDE (AVR Studio / Arduino)



Communication


The radio base-station is connected to the PC through USB and transfers data to and from the robot wirelessly. In the same way the radio chip (nRF24L01+) mounted on the robot communicates through SPI with the microcontroller and transfers data to and from the PC wirelessly. The robot is identified by an address that is stored in the last two bytes of the microcontroller internal EEPROM; the robot firmware setup the radio module reading the address from the EEPROM. This address corresponds to the robot id written on the label placed under the robot and should not be changed.

Software


AVR Studio 4 project: The project is built with AVR Studio 4 released by Atmel. Arduino IDE project: The project is built with the Arduino IDE 1.0 freely available from the official Arduino website. Aseba: Aseba is a set of tools which allow novices to program robots easily and efficiently.

Video



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