Variable voltage regulator :

Using this circuit we can obtain output greater than 5 V using IC 7805 and some capacitors and resistors .

Robotic Arm :

Our first Gripper : works well :D

Mechanism for converting rotary motion to linear motion :

All about Batteries :

http://www.rchelicopterfun.com/rc-lipo-batteries.html

Battery balance and T connectors :
http://learn.trossenrobotics.com/arbotix/arbotix-external-hardware/11-lipo-battery-guide.html

Servo motor interfacing with Arduino :

Adafruit :

https://learn.adafruit.com/adafruit-arduino-lesson-14-servo-motors/overview

Buy LiPo low voltage alarm

Ebay :

http://www.ebay.in/itm/LiPo-Low-Voltage-Alarm-cum-Voltage-Tester-1S-8S-/201216003341?_trksid=p2054897.l5658

Wall follower

Wall follower using PID and ultrasonic sensors :

Links :

1. https://translate.google.com/translate?depth=1&hl=en&rurl=translate.google.com&tl=en&u=https://fahmizaleeits.wordpress.com/2012/09/30/robot-wall-follower-dengan-kendali-pid/

Holonomic X Drive :

Useful Links :

1. http://blog.elliotjb.com/2013/10/holonomic-x-drive-tutorial-theory-of.html
2. http://blog.elliotjb.com/2013/10/holonomic-x-drive-tutorial-programming.html
3. http://blog.elliotjb.com/2013/10/holonomic-x-drive-tutorial-programming_31.html
4. http://blog.elliotjb.com/2013/11/holonomic-x-drive-tutorial-writing-test.html?view=flipcard

Vex Forum ( Full  explanation ) :

http://www.vexforum.com/showthread.php?t=12986 


 

Line following robot :

My Arduino based line follower using 8 digital sensors array

Demo run :

Links :

Fast line follower using PID algorithm :

1. http://thanoseleftherakos.blogspot.se/2011/10/pid-line-follower.html
2. http://www.techbitar.com/fast-line-following-robot.html (with code)
3. http://webdelcire.com/wordpress/archives/619 
4. http://42bots.com/competitions/arduino-line-following-code-video/( using different algorithm)
5. http://www.ikalogic.com/line-tracking-sensors-and-algorithms/  (tips for array intersection)
6. http://www.instructables.com/id/Robot-Line-Follower/ (9 sensor design - fast )

Using Rasberry Pi and Camera :

http://www.raspberrypi.org/an-image-processing-robot-for-robocup-junior/


New line follower design ( under construction ) :

Low ground clearance 

 

Intersection counting :

Fast line follower + Wall follower !!