SEN0305 UART PROBLEM

Hi everyone,

 

I am experiencing a hardware issue with the UART communication port.

Problem Description: The UART port does not transmit any data. I have verified this through multiple tests.

Tests Performed:

USB-TTL Loopback Test: PASSED ✓TX-RX short circuit test successfulCOM port working correctlyConnection Verification: CORRECT ✓HuskyLens T (Pin 1) → USB-TTL RXHuskyLens R (Pin 2) → USB-TTL TXHuskyLens - (Pin 3) → USB-TTL GNDProtocol Settings: CORRECT ✓Protocol Type: Serial 9600Saved and device restartedDevice Functionality: WORKING ✓Face Recognition detects and learns facesBlue frame with "Face: ID1" displayedAll algorithms working normallyMultimeter Test: FAILED ✗TX pin (Pin 1) shows constant 3.3VExpected: Variable voltage (0V ↔ 3.3V) when transmitting dataResult: No data transmission, pin stuck in IDLE state

Firmware Version: 0.5.1bNorm

Conclusion: The UART TX pin appears to have a hardware defect. It remains at constant HIGH (3.3V) and never transmits data bits.

Request: Could you please confirm if this is a known issue or provide guidance? If this is a hardware defect, I would like to request a replacement unit or refund.

 

Thank you for your assistance.