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Pololu TReX Jr dual motor controller DMC02

Pololu item #: 767	Price Break	Unit price (US$)
Quantity in stock: 18	1 10	59.95 49.95
Quantity:	1 10	59.95 49.95

This lower-power, smaller, and lower-cost version of the TReX is the ultimate general-purpose motor controller for small motors: it has a wide operating range (5 to 24 V), delivers 2.5 A continuously per motor, provides current sensing on the two main channels, and it features the TReX triple interface that allows you to control motors from a serial line (RS-232 or TTL), radio control (RC) receiver, or analog voltage source such as a potentiometer.

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Documentation and other information

Pololu TReX Jr User’s Guide

User's guide for the Pololu TReX Jr motor controller

File downloads

TReX Configurator utility for Windows (297k zip): If you have the ability to connect your TReX to a computer (via serial port or USB-to-serial adapter), you can use this program to monitor the channel inputs, control the motor drivers, and configure its various settings.
TReX Jr command documentation (103k pdf)
TReX Jr configuration parameter documentation (128k pdf)
TReX Jr Firmware version 1.0 (137k trx): This firmware comes preloaded on every TReX Jr we ship. We recommend you use this version unless you need the serial delay feature included in firmware version 1.1.
TReX Jr Firmware version 1.1 (138k trx): This firmware inserts a 1 ms delay between the last byte of a received command packet and the first byte of the TReX’s transmitted response. Without this delay, slower controllers such as the Basic Stamp can miss the first byte of the TReX’s response. If your controller does not require this extra delay for proper communication, you should not use this firmware as it is not considered an upgrade over the original firmware (version 1.0).