Sscom 3.2

For most modern users, Tera Term (with macro support) or HTerm is a better free choice. But SSCOM 3.2 remains a respected veteran for quick, dirty, and reliable serial work—as long as you download it from a trusted source.

(often referred to as ) is a popular, lightweight serial port debugging and communication tool used primarily for testing embedded systems, microcontrollers, and IoT devices. It allows developers to send and receive data via COM ports in both ASCII and Hexadecimal formats. Microsoft Store Key Features Multi-Protocol Support

: Primarily used for serial communication (RS232/422/485) and can support custom baud rates exceeding 115200bps. Dual Formats : Send and receive data in "String" or "HEX" modes. Extended Commands

: Use the "EXT" button to open an expansion panel for pre-setting and quickly sending multiple command strings. Real-time Monitoring sscom 3.2

: Monitor traffic with timestamps and save logs for later analysis. Configuration Storage

: Custom commands and settings are automatically saved in a local file for reuse. Microsoft Store Common Use Cases Embedded Development : Debugging Arduino, STM32, or ESP8266 boards. Device Configuration

: Changing or checking parameters for GPS trackers (e.g., APN, Server, time zone). Hardware Testing For most modern users, Tera Term (with macro

: Validating communication between PCs and industrial equipment like LCD modules or LIS (Laboratory Information Systems). www.stoneitech.com

Serial Debug Assistant - Free download and install on Windows

The original SSCOM 3.2 is safe, but many download sites bundle adware or modified executables. | Feature | SSCOM 3

The UI is divided into four functional zones:

| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | "Port open failed" | Port in use or driver issue | Close Arduino IDE/Cura. Reinstall CH340/FTDI driver. | | Garbage characters in window | Baud rate mismatch or incorrect data bits | Double-check device datasheet. Try 9600/8/N/1 then 115200. | | No data received | Wrong TX/RX wiring | Swap TX and RX lines on your adapter. Ensure common ground. | | SSCOM freezes on send | Flow control enabled accidentally | Set Flow Control to "None". | | Unable to send large files | Buffer overrun | Reduce "Send Interval (ms)" to 10-20ms or use hardware flow control. |

| Feature | SSCOM 3.2 | Putty | Termite (v3.4) | Serial Port Monitor | | :--- | :--- | :--- | :--- | :--- | | Hex Send/Display | ✅ Excellent | ❌ Limited | ✅ Good | ✅ Excellent | | Auto Framing | ✅ (Time-based) | ❌ No | ✅ (Byte-based) | ✅ Yes | | Scripting Support | ❌ No | ❌ No | ✅ (Python) | ✅ Yes (Lua) | | Portability | ✅ Single EXE | ❌ Requires DLL | ✅ Single EXE | ❌ Installer | | Modbus RTU Tools | ❌ No | ❌ No | ❌ No | ✅ Yes | | Resource Usage | ~2 MB RAM | ~15 MB RAM | ~8 MB RAM | ~50 MB RAM |

Why choose SSCOM 3.2 over modern tools?