ROBOTIC
TUTORIALS.COM

• Acrylic Chassis                       1                    Buy Now 
• Wheels                                  2                    Buy Now
• Castor Wheel                         1                    Buy Now 
• BO motor                               2                   Buy Now
• Motor Clamp                          2                    Buy Now 
• SPDuino Board                       1                    Buy Now
• Xbee Shield                           1                    Buy Now 
• Power Bank                           2                    Buy Now
• WiFi Module                          1                    Buy Now 
• Xbee USB Adapter  Board        1                   Buy Now 
• USB A to mini B Cable            1                    Buy Now
• USB A-B Cable                       1                    Buy Now
• Adapter 5V 2Amps                 1                    Buy Now
• Screw Assortment                  1                    Buy Now
• USB to 2 Pin RMC Series         1                    Buy Now

• Either own chassis can be designed or available chassis can be used.
• Provisions are made to fix sensors, SPDuino Board, small castor wheel etc.,
• clamp is fixed to attach motors.

• This is plastic geared motor and has D type shaft.
• This is used in autonomous robots and line follower robots etc.,

•   These wheels are used for BO/ Plastic geared, D type shaft motors.

• The small castor wheel is an omni-directional wheel.
• This wheel is used as free support front wheel for robots.

 
SPDUINO BOARD

• Microcontroller: ATmega328
• Operating Voltage: 5V
• Input Voltage (recommended): 7-12V
• Input Voltage (limits): 6-20V
• Digital I/O Pins: 14 (of which 6 provide PWM output)

• Provided with stackable headers
• On board 5V, 1.5Amps regulator
• Hassle free interface for xbee modules
• Includes dual motor driver (L293D)
• Indicators provided for Data-in, Data-out and RSSI (Signal strength indicator) compatible with all  Xbee versions  and   Rn Xv wifi module..

• Compatible for all modules with Xbee footprints  
• Indicator for Signal strength(RSSI), power, TX and RX
• Comes with Mini USB connector

•  This cable will be used to connect both the xbee modules to your computer for software  configuration 

•  This cable will be used for uploading the program code in spduino

• Battery Voltage: 5V 
• Battery capacity: 2000mAh

• 3 x 10 Spacer - 4 Nos
• 3 X 20 Spacer - 4 Nos
  
• 3 X 10 Bolt - 14 Nos
• 3 X 25 Bolt - 7 Nos
• 3 X 50 Bolt - 5 Nos
• BO Screws - 5 Nos
• 3mm Nut - 30 Nos

• Small castor Wheel is fitted in front side of the chassis with screws.

• The clamp has many holes to connect the motor in any desired position.
• Both the motors are fixed in the appropriate holes in the clamp.
• The shaft of the motor should face the other end so as to fix the wheel.

• The wheels are fitted to the shaft of both the motors.

• They are screwed in the axle of the wheel. 

Above the board the Xbee shield is connected using the stackable headers.

We have used  Tera Term in this tutorial.

Step 1: Connect Rn Xv (Wifi)  module with the help of Xbee Adapter to the computer via USB

Step 2: Open Tera Term software.

Step 3 : Select serial communication  port (COM port at which Xbee adapter is connected)

Step 4: Click Ok. After it you will get a screen here you need to type the commands used to set network parameters in module memory.

Step 5: Commands used are as follows

•     $$$     (TYPE $$$ it will be invisible)

                   Note:  It allows you to enter in command mode 

                              You will receive CMD as a reply in your screen

•   set wlan ssid  *****  (refers to your network name)
•   set wlan phrase *******  (refers to your network password)
•   set wlan join 1
•   set wlan channel 0
•   set ip a 192.168.1.201 (depends on your router or modem )
•   set ip localport 2000
•   set ip dhcp 0
•   set ip gateway 192.168.1.1 (depends on your router or modem )
•   set ip netmask 255.255.255.0

             Note:  for all these commands you will get AOK as the response.                

•   save
•   reboot

             THIS WILL BE THE SCREEN AFTER CONFIGURATION   

Step 6: Configuration is complete now exit TERA TERM software. Remove your wifi module from adapter and attach it to the XBEE shield of your Robot like this pic.



Step 7: Connect the Motors and Battery to the Xbee Shield and upload the Program  in your SPduino.

Now  to communicate with your robot using the Wifi  attached to it we need a network communication tool such as PUTTY, etc. 

We are using putty in this tutorial .
Open putty enter the IP address of the module (which you have configured)  and the port number. Now select RAW  in connection type and click open.



      You will receive hello as the response from the module once you are connected with it.

 

        Once you receive hello now give the commands you  programmed for moving the robot. That time the light on the module should be solid green.

IMPORTANT  NOTES

Your Computer or laptop should be connected to the same network which is configured in the Wifi module.
 

The jumpers of the xbee shield used in this tutorial should be in  microcontroller mode other wise the robot will not work and do not forget to adjust  the jumper of  Spduino board after uploading the program. 



 

LIGHT INDICATIONS of  Rn Xv MODULE

GREEN & RED alternate blinking  - Searching for the network.