Show HN: LinkScope – Real-Time UART Analyzer Using ESP32-S3 and PC GUI

Hi HN,

I built a real-time UART analyzer using an ESP32-S3 and a Windows GUI.

It captures high-speed UART data and shows live statistics and visualization on PC.

Main features: - Up to 921600 baud capture - Real-time throughput monitoring - RAW hex viewer - Frame decoding - Health / buffer status - Standalone Windows EXE

How it works: Target MCU TX → ESP32-S3 RX → USB → PC Analyzer

You just connect your device’s TX pin to the ESP32-S3 RX pin and run the PC app.

Supported devices: STM32, ESP32/ESP8266, NRF52, RP2040, Arduino, and other UART devices.

GitHub: https://github.com/choihimchan/linkscope-bpu-uart-analyzer

Demo GIF is in the README.

I’m actively improving this project and would really appreciate feedback, ideas, and bug reports.

Thanks!