User Manual

servo update routine, causing it to become unresponsive. This bug does not affect the Mini

Maestros.

Upgrade Instructions

You can determine the version of your Maestro’s firmware by running the Maestro Control Center,

connecting to a Maestro, and looking at the firmware version number which is displayed in the upper

left corner next to the “Connected to” drop-down box. If you do not already have the latest version

(1.03 for Mini Maestros, 1.04 for the Micro Maestro), you can upgrade by following the instructions

below:

1. Save the settings stored on your Maestro using the “Save settings file…” option in the File

menu. All of your settings will be reset to default values during the firmware upgrade.

2. Determine which type of Maestro you have either by counting the number of channels or by

looking at the name that appears in your Device Manager. There are four types of Maestro:

the Micro Maestro 6-Channel USB Servo Controller (usc02a), the Mini Maestro 12-Channel

USB Servo Controller (usc03a), the Mini Maestro 18-Channel USB Servo Controller

(usc03b), and the Mini Maestro 24-Channel USB Servo Controller (usc03c).

3. Download the latest version of the firmware for your type of Maestro. It is important that you

know which type of Maestro you have so that you can download the correct version. The

latest firmware versions can be downloaded here:

◦ Firmware version 1.04 for the Micro Maestro 6-Channel USB Servo Controller

(usc02a) [https://www.pololu.com/file/0J1689/usc02a_v1.04.pgm] (34k pgm)

◦ Firmware version 1.03 for the Mini Maestro 12-Channel USB Servo Controller

(usc03a) [https://www.pololu.com/file/0J1169/usc03a_v1.03.pgm] (41k pgm)

◦ Firmware version 1.03 for the Mini Maestro 18-Channel USB Servo Controller

(usc03b) [https://www.pololu.com/file/0J1170/usc03b_v1.03.pgm] (42k pgm)

◦ Firmware version 1.03 for the Mini Maestro 24-Channel USB Servo Controller

(usc03c) [https://www.pololu.com/file/0J1171/usc03c_v1.03.pgm] (43k pgm)

4. Connect your Maestro to a Windows or Linux computer using a USB cable.

5. Run the Maestro Control Center and connect to the Maestro by selecting its serial number in

the “Connected to:” drop-down box in the upper left corner.

6. If you were not able to connect to the Maestro using the Maestro Control Center, double-

check your USB connection, make sure all other devices are disconnected from the Maestro,

and try plugging it into several different USB ports on your computer. If you are still unable to

connect to it, see the instructions in Section 4.f.1 for doing a hard bootloader reset.

7. Go to the Device menu and select “Upgrade firmware…”. You will see a message asking you

4. Using the Maestro Control Center Page 42 of 102