{"id":461,"date":"2025-06-17T10:09:22","date_gmt":"2025-06-17T10:09:22","guid":{"rendered":"https:\/\/blog.aetherix.local\/?p=461"},"modified":"2026-03-27T13:10:30","modified_gmt":"2026-03-27T13:10:30","slug":"jetson-is-not-working","status":"publish","type":"post","link":"https:\/\/blog.openzeka.com\/en\/jetson-is-not-working\/","title":{"rendered":"Jetson Is Not Working \u2014 How Can I See the Error Logs?"},"content":{"rendered":"

If your Jetson device isn\u2019t powering on properly or seems unresponsive, one of the most effective ways to diagnose the issue is through UART debugging.<\/p>\n<\/div>

UART (Universal Asynchronous Receiver\/Transmitter) is a widely used serial communication protocol for interfacing between electronic devices. Developers often use UART for debugging by connecting a UART module to their device, enabling them to send real-time debug messages (e.g., variable values, program flow) to an external terminal. Since UART operates asynchronously\u2014without a shared clock signal\u2014it is relatively simple to implement and ideal for embedded system debugging. This document explains how to perform UART debugging on Jetson modules using a USB-to-TTL converter.<\/p>\n

This document explains how to perform UART debugging on Jetson modules using a USB-to-TTL converter.<\/p>\n

Required Materials:<\/strong><\/p>\n

    \n
  • Jetson Developer Kit or AI Edge Kit<\/li>\n
  • Jumper wires<\/li>\n
  • FTDI or USB-to-TTL Serial Converter<\/li>\n
  • Ubuntu-based host PC for debugging<\/li>\n<\/ul>\n

    The steps below are demonstrated using a Jetson Nano Developer Kit, but they are applicable to all Jetson platforms.<\/p>\n<\/div>

    1. Wiring<\/strong><\/p>\n<\/div>

    Identify the RXD, TXD, and GND pins on your FTDI or USB-to-TTL module. Connect them to the Jetson UART pins using jumper wires. Note that the connections must be crossed (TX \u2194RX):<\/p>\n<\/div>\n

    \n\n\n\n\n\n\n\n
    Jetson<\/th>\nFTDI<\/th>\n<\/tr>\n<\/thead>\n
    RXD<\/td>\nTXD<\/td>\n<\/tr>\n
    TXD<\/td>\nRXD<\/td>\n<\/tr>\n
    GND<\/td>\nGND<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Connect the USB side of the converter to your host PC, but do not power the Jetson device yet. Power will be connected in Step 8.<\/p>\n<\/div>

    2. Install Minicom<\/strong><\/p>\n<\/div>

    Minicom is a terminal emulator used to read the UART output.<\/p>\n<\/div>