Robotic Arm Edge

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OWI has made robotic arm technology more affordable without compromising quality. With Robotic Arm Edge, command the gripper to open and close, wrist motion of 120 degrees, an extensive elbow range of 300 degrees, base rotation of 270 degrees, base motion of 180 degrees, vertical reach of 15 inches, horizontal reach of 12.6 inches, and lifting capacity of 100g. WOW!   Some of the added features include a search light design on the gripper and a safety gear audible indicator is included on all five gear boxes to prevent any potential injury or gear breakage during operation. How does this equate to fun? 

Check out what the Chester County Career Center has to say: Blog


Ages: 13+
Dimensions: 9" x 6.3" x 15" 
No. of Pieces: 197
Batteries Required: 'D' size x 4 (Not Included)



                 Motor Specification:-






 Operating Voltage



 No Load Current

255mA Max.


 No Load Speed

12340rpm ±12%


Starting Voltage



Starting Current



 Stall Torque



 Stall Current



                  Motor Dimensions:-



 End Shaft ( Metal Case Side)

9.4 ±0.5mm


End Play



End Shaft (End Bell Side )



 Motor Length

25.0 ±0.3mm


Motor Diameter

Φ20 ±0.2mm


 End Bell Case Width

Φ15.1 ±0.15mm


 Bearing Case Diameter

Φ10 +0.05/-0.25mm


 Bearing Case Width

8.9 ±0.25mm



 Tolerance : ±12%


21 Reviews Hide Reviews Show Reviews

  • 5
    Worth it. Don't hesitate.

    Posted by Jeff on 19th Aug 2020

    Yup, this is a no-brainer for introducing your kid to robotics. I would rate the build: informed-beginner to intermediate. Definitely not for a first timer or younger ones who have never learned how to follow instructions. For the price, don't hesitate, it is quite a value. I completed the build myself because my son is 4 years old. Four is too young to complete this build. But four is the perfect age for introductory robotics lessons. I handed it to my son and he has been completing rudimentary tasks with it since: (1) how many lego men can you pick up and place in the bowl on the other side; (2) what is the heaviest object you can pick up with the claw; (3) can you operate two motors simultaneously to complete a task. It's super fun. My son's world got a little bigger today. Invest the time. There is hardly any cost here.

  • 4
    Robotic Arm Review

    Posted by Unknown on 29th Oct 2013

    My 9th grade daughter had a science project to complete. Her instruction was to build a robotic arm that could pick up a pencil and hold it for 1 minute, 18 inches high. We tried to build one from scratch following internet instructions. We built it but it could not work because I did not have precision tools needed. With 4 days to the due date, we ordered the robotic arm. It says that it would take 2 hours to construct. The parts were so small it was difficult to handle them. The instructions were a bit confusing at first but once understanding the flow, it was not hard at all. We finished the project on time. The robotic arm worked as advertised.

  • 5

    Posted by Unknown on 5th Mar 2013

    This is a blast to build. It may have only taken 1 day, but I savored the hours.

  • 5

    Posted by Gina on 5th Feb 2013

    My 12 year old was so excited when this came in the mail. He sat down with the intention of just working on it a little bit, but got so wrapped up in it, that he finished in just one day. He loves playing with it and showing his friends. I'm sure he is waiting for the next one. We will definitely be purchasing more from this site! Thanks so much!

  • 4
    For Big Kids Too - I'm hacking it

    Posted by Craig Turner (aka Gampa Geek) on 10th Jan 2013

    A friend bought me the OWI-535 Robot Arm Kit for my Birthday, because they know I like playing around with robotics and electronic stuff. It’s a fun item I can use to learn about controlling a robot via USB. It took me about 2-3 hours to put it all together. No problems encountered during construction. The instructions were clear and concise. The parts are surprisingly good quality for the price, and build quality once assembled is remarkably sturdy. It all worked fine with the PC software. I then moved on to trying it with some Java software I am writing, because I intend to eventually make it mobile (see link: The Java code works fine too so now I can progress and write my own interface for the OWI-535. It would be easy to hack with Arduino or Raspberry-PI too due to the nice–n-easy pinouts. OWI-535 Robot Arm with USB: taking into account quality, fun, specification and price I give it 4/5.

  • 5

    Posted by Oliver on 7th Dec 2012

    Oh my gosh. I never thought this robot would be so cool. The manual is so easy to understand. I have no robot experience, but I still built it perfectly .

  • 5
    Thank you! I would recommend this kit to anyone!

    Posted by Marilyn B. on 30th Oct 2012

    Hi - my 13yo son and I put together the Robotic Arm Edge kit today, while school was out due to Hurricane Sandy. The best part of this experience was that we created a robot that works!!! He has had many other kits that, after hours of assembly, just didn't work. We had a great time, and he is proud of his robotic arm.

  • 5

    Posted by Byron on 13th Oct 2012

    I got this for my son. He is 5. All i did was put the screws in. As complex as it is the instructions are easy enough for him to understand. He loves it. It's fun for adults too!

  • 5

    Posted by Adam on 6th Jun 2012

    this was so much fun to build it took me 3 hours to do it but it was fun and i was 10 so yeah... anyways it is fun to play with and i like that you can customize the control interface with the different wires.