This is the Century High School Science Olympiad Robot Arm that competed at the Minnesota 2012 State  Science Olympiad tournament with 32 other teams. I built and ran this remote control robot arm for the tournament, placing 8th (due to unforeseen problems). I am about to graduate high school (in 3 days!) as a legal adult (having turned 18 after the state tournament), and built this over the course of my senior season on the Science Olympiad team. This wasn't my first time dappling in Remote Control Robots, as my previous Instructable, How to Make a Sumo Bot (Science Olympiad 2011 Rules), but was my first time building a robotic arm. 

Here's a brief overview of the competition:

Science Olympiad is a team-based science competition with events ranging from so-called "study events" to "lab events" to the menacing "build events." Robot Arm was one of these "build events." The event consisted of building a Remote Controlled Robotic Arm to pick up as many objects and place them in containers made out of half gallon milk jugs to score as many points as possible during a 3 minute period of time. 

This robot arm is clearly not the most sophisticated or most complicated robot arm ever made, but it gets the job done, while recycling parts, learning about Remote Control systems, and using common (and cheap!) building materials with a few motors to make a functional robot arm to pick up and move things around.

Step 1: Rules of the Competition

Now for the extended overview of Science Olympiad, and specifically, the Sumo Bots competition:

Science Olympiad is, as I stated previously, a team-based science competition. Competitions include Invitationals hosted by schools around the state, Regionals, State, and Nationals. According to the Science Olympiad National website, soinc.org, Science Olympiad has been around for 28 years, and "has led a revolution in science education." Teams, for Division C (high school division), are made up of 15 members, who participate in multiple events, usually with different partners for each event. Events range from "lab events", such as Chemistry Lab and Forensics, to "study events", such as Ornithology and Fossils, to "build events", such as Gravity Vehicle and Robot Arm.

For Robot Arm, specifically, the robot has specific construction parameters, required documentation, a specific competition area and competition details, and a unique scoring system, as the two rule sheets outline.
<p>What is the total cost?I am looking for a robot arm that is inexpensive enough for me to buy.Who konws something about it?</p>
<p>You can buy a uram robot arm, but you can get a better robot arm from here:</p><p><a href="http://www.instructables.com/id/Build-a-multi-controlled-high-precision-desktop-ro/" rel="nofollow">http://www.instructables.com/id/Build-a-multi-cont...</a></p>
<p>What a good DIY robot arm!!</p>
What is the total cost?
<p>how much is the cost of this project?<br><br>and what are the parts</p>
its awesome but can it move.
Yes. Check out step 18 for a demo video.
thanks for the build! how much mah does the battery need? im looking to buy a 1500mah one, is that enough?
My battery is rated at 1500mah, and that seemed to work for my purposes.
This really helps me and i can't stop crying now! :D
Nice! I also published an instructable for a Science Olympiad robotic arm (it's displayed on the side says by V0R73X) but mine was Bluetooth controlled, and not as good as yours! xD I generally had problems designing the grip architecture, so I used hair clips! =D and I guess it was too complicated for an instructable and lack of good vids/pics... anyways nicely done!
Very nice job on this project! I too am in Science Olympiad and I just love it. I too was in this event and it was a job to keep this event in budget and functional. For all the work that we put in, it will be a shame to not have it next year. <br> <br>It is such a great time and i hope your team had a good season! Keep up the great work!
excellent work!!!
I remember doing this for the Science Olympiad as well! So much fun.
Wow, so cool. You should consider entering this in the <a href="http://www.instructables.com/id/Scoochmaroo-Challenge-Fathers-Day/">Father's Day Challenge!</a>
yes theay should <br>
Sure, why not? Even though it was a while ago, my dad helped me quite a bit with this, so I suppose the &quot;present&quot; was our time working together.
Very cool ! Watching the video I noticed it tended to wobble a lot. Last night I found the perfect fix in one of my junk boxes. It was a rotatry bearing for &quot;lazy Susans&quot;. With one mounted on a platform &amp; the drill going up thru the middle the bearing would take the weight &amp; stiffen up the whole arm. Just a thought incase you make MARK II.
That's a great idea! Thanks! I may just incorporate that into the next version (hopefully with a better motor for rotation--a less &quot;jerky&quot; motor).
I have that exact pincer kit and have yet to work it into a project. Thanks for the ible.
No problem! The claw works well, the only issue is the assembly...it's a little bit of a headache.

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Bio: I'm a college student majoring in mechanical engineering who enjoys running, playing trombone, building things (in high school it was for Science Olympiad), and ... More »
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