Revolution JD

Humanoid Shoulder Calibration


Servo EZ-Bits may need calibrating. This process should only need to be done once per servo. This is a physical process, in which you will require a screw driver to remove the EZ-Clip to realign it at 90 degrees. This process is very easy and is highly recommended before building your EZ-Robot.

What You Will Need

  • No. 1 Philips Screw Driver
  • Freshly Charged Batteries
  • An EZ-B v4
  • A PC with EZ-Builder Installed
  • Humanoid Body to be calibrated

Step 1

Insert the EZ-B v4 into the robot body

Step 2

Turn the power switch to the ON or 1 position. Early Revolution robots have a power switch labelled ON/OFF, while the newer robots are labelled with a 0/1.

Step 3

When the power switch is turned to the ON position, the EZ-B will be flashing Blue. This means it is ready for a Wi-Fi connection.

Step 4

Locate the EZ-B Wi-Fi Access Point in your Wi-Fi Networks List. This is accessed by pressing the Wi-Fi button on your system tray.

Step 5

Load EZ-Builder and press the Web Configuration Access button on the Connection Control.

Step 6

Your default web browser will open to the EZ-B v4 Wi-Fi Web Server home page. Press the Diagnostic button from the left side menu.

Step 7

The Diagnostic page will now be displayed. Press the button labelled "All Ports Servos 90 Degrees". This will set all 24 of the digital ports on the EZ-B v4 to 90 degrees. Any servos that are connected to any digital port will now move to what it has been calibrated as 90 degrees. In the next steps, you will see how to calibrate the servo to be aligned at 90 degrees. You will repeat the next steps one at a time per servo.

Step 8

Connect both servo wires to any of the EZ-B v4 digital ports. The servos will now move to what they believe 90 degrees is.

Step 9

Once the shoulder servos are connected to the EZ-B v4, they will move to what they think is 90 degrees. Consult the image above to see what 90 degrees should look like. The shoulder brackets should open from the top and parallel with the edge of the body.

Step 10

After viewing the shoulder bracket alignment in the previous step, the servo may need calibrating, If the servo needs calibrating, use a Phillips screw driver to remove the screw that holds the brackets onto the servo gear.

Step 11

Now that the screw is removed, you can separate the bracket from the servo by pulling outward.

*Note: Do not disconnect the servo from the EZ-B v4 until instructed to do so.

Step 12

Reinsert the bracket onto the servo gear. Notice the orientation of the bracket and that it is parallel with the edge of the body.

Step 13

Insert the screw back into the servo gear which holds the bracket and tighten it snug. Do not overly tighten, you do not want the screw to dig into the plastic. The strength of the lever from slipping is dependent on the teeth of the gears and not the tightness of the screw.


You may now perform the same procedure on the other bracket of the Humanoid Body. The humanoid body has two brackets, left and right. Repeat this procedure to the bracket on the other side. Once you have completed calibrating both brackets, you may remove the servo wires from the EZ-B.

Continue to Next lesson

Last updated 1/9/2015

Table of Contents

8. Blockly