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Mechanics and Construction / pneumatic flipper-please help
« Last post by 4rfvedc on May 03, 2017, 01:01:20 AM »
I build a 12pound battlebots,use pneumatic flipper(110psi),but the cylinder moves to slow,the thrust is enough,but the speed is not enough to flip other robot.
What the best cylinder and Solenoid valve to use for the flipper?
Should i use the decompression cylinder?

thanks :)
Mechanics and Construction / Re: Animatronic Robot
« Last post by pip4566 on May 02, 2017, 02:39:55 AM »
Hi I found out how to do it.  I have now build a small animatronic parrot that turns it's head from left to right. :)
Misc / Looking for Quality High School Robotics Experiences
« Last post by curt_bixel on May 01, 2017, 11:02:10 AM »
It seems that there are a lot of exceptionally high quality high school robotics programs out there.  The things the best programs seem to have in common are"

1.   The kids are exceptionally invested in what they are doing, and they are passionate about it.
2.   The kids work in multi aged groups, with students returning year after year, passing their knowledge on to younger students.
3.   The work is project based.
4.   There are a lot of actual real problems the kids are working on, so there is a lot of problem solving.
5.   Lots of engineering and science is being learned.
6.   The activities the kids are involved in day to day are in service to a larger project and goal. 
7.   What the kids are learning depends upon the project and goal.
8.   There is nothing about it that seems contrived.

I have also noticed that often these types of experiences, which we all know are truly excellent education, happen outside of the actual school day. 
I am wondering if anyone knows of a school that has solved this problem and offers such a robotics experience during the actual school day. 
After looking around a bit, it seems that most of what goes on during the day is structured to the point that it does not permit a lot of the items listed above.  It seem especially hard to find a system where students can return and mix with other newer robotics students. 
I would love to hear about some places where such a program might be thriving!
This video will show you a quick way to find out if two 32 pitch gears will mesh together when using them on Actobotics channel.
Misc / Re: WHAT IS A SERVO????????
« Last post by FIFO on April 25, 2017, 03:47:00 PM »
    A servo mechanism is basically an actuator (such as a motor) with a closed loop feedback system. What this means is that the servo controller can "know" the absolute position of the actuator at any time. In hobby electronics, one often encounters small servomotors whose position can be controlled by sending a control pulse of varying length (PWM).
    Now let's say, for example, that you have a sonar distance sensor attached to a servo on the front of your robot, and you want the robot to turn the sensor to the right to see if there is a clear path. One could use a microcontroller to send a pulse to the servo commanding it to turn 90? to the right. What's nice about this is that the control electronics in servo will make sure that it gets to that exact position and stay at that position, even if the sensor is bumped. Now of course you can do far more complicated things with this setup, such as having the servo constantly scanning back and forth so that the sonar can create a 2d distance map ahead of it, but this is just a basic example.

    If you want to learn more about hobby servos, I suggest that you check out this article by Sparkfun: It is comprehensive and very easy to understand. The Society of Robots also has its own page on this too:
For Sale / Re: I need a list of the cheapest parts for my first robot
« Last post by KK428 on April 23, 2017, 05:45:40 PM »
For Sale / Re: I need a list of the cheapest parts for my first robot
« Last post by FIFO on April 23, 2017, 04:30:17 PM »
    Without knowing what sort of robot you want to construct, it would be difficult to provide you with links to specific parts, however I can point you toward good sources for cheap components. This post contains, among other things, a list of sources for components each with a mini review:
Misc / WHAT IS A SERVO????????
« Last post by KK428 on April 21, 2017, 05:22:22 PM »
I am just a beginner trying to build my first robot. I did a wiki search but as always it is complete nonsense to anyone that has not got a masters degree in robotics! please put your answer in dumbest form. :-\
Misc / Re: want a new robot tutorial?
« Last post by KK428 on April 21, 2017, 05:12:04 PM »
I think you could add some tutorials for making robots with raspberry pi/ arduino boards. Im not sure if this has to do with robotics but also setting up rpi/arduino would help too. ;D
Misc / What is career growth for Robotic process automation (RPA) in India?
« Last post by Deepakcandyman on April 21, 2017, 03:55:05 AM »
What is career growth for Robotic process automation (RPA) in India?

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