Pololu TReX Jr - Manual (Page 23)

your current firmware and you will then see a progress bar showing you the status of the upload. If no errors occur,
you will see a success message when the update is finished.
Option 2: using a terminal program
If you would rather use a terminal program, you will need one that is capable of transferring binary files, such as
Tera Term Pro. Connect to the serial port that your TReX Jr is on at 115.2 kbsp with 8-bit characters, no parity, and
one stop bit. No flow control is necessary. If you have completed the 8 steps above (so that the green status LED is
flashing once per second), you are ready to upload the new firmware file. First, transmit the character ’s’. This will
erase the current firmware. Next, transfer the firmware update file (.trx) to the TReX Jr as a binary file. If
everything works correctly you should see a ’*’ appear and the TReX Jr’s red status LED will flash five times as it
starts up before staying solidly on.
Pololu TReX Jr User's Guide © 2001–2009 Pololu Corporation
6. Updating the TReX Jr's Firmware Page 23 of 23