A Robot arm kit by OWI :The Robotic Arm Edge

The OWI Edge can be built from this robot arm kit. It is fun to build and should take about 2-3 hours to assemble. You will need a first class Phillips screwdriver and 4 "D" batteries to complete. This a great subject for a parent/ child project, but it is not the fastest moving robot (that does make it safe!) and results in a super cool project.

The robot is controlled by a control box that is wired direct to the model.. 5 axes are actuated:

  • Gripper open/close (Complete with an LED light)
  • Radial wrist motion of 120 degrees
  • Elbow motion of 300 degrees
  • Base rotation of 270 degrees
  • Base motion of 180 degrees
  • Vertical reach of 15" (381mm)
  • Horizontal reach  of 12.6" (320mm)

What's Included

Basically everything needed is included in the kit.

  • Many injection molded parts
  •  5 servo motors,
  • The PC board (fully assembled-no soldering required)
  • All the hardware ( that is a LOT of screws!)

Extras Needed

  • Four(4) "D" batteries

Tools needed to Assemble this Robot Arm Kit


  • Maximum lift-100g (3.5 oz.)
  • Horizontal reach-12.6" (320mm)
  • Dimensions: 9" (228mm) long x 6.3" (160mm) wide x 15" (381mm) high
  • Weight-658g (23.2oz)
  • Power source: 4 x "D" batteries (Sold separately)

The Manual

To give you a good idea of what's involved in a project like this, it is a good idea to take a look at the manual. Click here to take a look see

This manual for the robotic arm kit is well written and nicely illustrated and should make assembly a pleasure!

Optional Extras

This USB interface kit allows offline programming of the robot, so as it can be programmed to move in a cycle automatically.

There is a PCB (Printed Circuit Board) that needs to be inserted in the robot base. A USB cable can then connect a laptop computer to the robot arm.

Full instructions are included to enable programs to be written to control the model in many fashions. This is good to learn the basics of robot programming.

Please note that the repeat-ability of the motions will not be that accurate. The motors are not servo or stepper motors and motions are controlled with time. It can still be a lot of fun though and looks great!


This video is well made and contains a lot of information, from unpacking through assembly of this robot arm kit and final running. If you are having doubts about you or your kids ability to assemble this, then take a look  here to see how simple it can be!

Review Summary

The majority of reviews of this robot arm kit were very positive. Out of a total of 604 Amazon reviews an average of 4.1 out of a possible 5 stars were awarded.

I include one below that was given 5 stars.

*Fantastic toy! Inspired both of my kids *****

By Ianaon August 15, 2016 on Amazon

Fantastic toy! Inspired both of my kids, 5 & 7 yrs. old--great project. Of course I had to mostly put it together, but was a phenomenal opportunity to teach them some basic tool usage and following a plan. They have played with it for hours.

The majority of the complaints were that the parts were small and made assembly difficult. Some people said that screws were missing (Make sure not to loose any!)

If you do have any problems, you can contact the manufacturer, OWI, by clicking here.

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