Description
The upgraded LPT to USB Converter, powered by the STM32F103C8T6 ARM Cortex-M3 microcontroller, offers an advanced and efficient solution for capturing printable data from legacy LPT (parallel) ports and converting it into usable digital formats such as PDFs, plain text, or structured serial data. With built-in support for multiple USB device classes like CDC (Virtual COM Port), HID, and USB Keyboard, this versatile tool enables seamless integration into modern digital workflows for data logging, automation, or document archival.
Powered entirely through the USB port, it requires no additional power supply, making it compact and easy to deploy in industrial or personal projects.
Key Features
- LPT to USB Conversion: Captures data from legacy LPT interfaces and converts it into USB-compatible digital output.
- STM32F103C8T6 MCU: Enables fast and reliable communication, supporting multiple USB device classes.
- Multiple USB Output Modes:
- CDC (Virtual COM Port) – for serial-based logging and communication
- HID (Human Interface Device) – for universal OS compatibility
- USB Keyboard Emulation – useful for secure or automated data entry
- Plug-and-Play: No drivers needed for HID and keyboard modes; standard USB serial drivers for CDC
- USB-Powered: Operates directly from USB 5V, no external supply needed
Specifications
- Microcontroller: STM32F103C8T6 (Cortex-M3)
- Input Interface: LPT (DB25 Parallel Port)
- Output Interface: USB 2.0 Full-Speed
- Baud Rate Support: 2400 bps – 3 Mbps (UART)
- USB Output Modes: CDC/HID/USB Keyboard
- Operating Voltage: 5V from USB
- Power Consumption: <100 mA typical
- OS Compatibility: Windows, macOS, Linux, Android
- Dimensions: 90 mm x 38 mm (approximate)
Applications
- Legacy System Integration: Extract digital data from older LPT-based machines, CNCs, or test equipment
- Document Archiving: Convert LPT print jobs into digital documents (e.g., PDF or TXT)
- Industrial Automation: Replace old LPT printers with USB-based logging and monitoring systems
- Secure Input Systems: In keyboard mode, data from legacy systems can be injected as keystrokes into modern applications
- DIY and Maker Projects: Ideal for developers or tinkerers who want to digitize output from parallel-based systems
Warranty and Support
- Warranty: 1-year limited warranty
- Customer Support: 24/7 assistance available via email and phone
- Firmware Updates: Optional DFU support for firmware upgrades and feature expansion