On macOS High Sierra or later, navigate to System Settings > Privacy & Security . Look for a message stating system software from developer "Jiangsu Qinheng Co." was blocked. Click Allow .
The "secret sauce" inside the HW-597 is its controller chip. Nearly all HW-597 modules are built around the highly popular and affordable . This chip is the reason the module requires a specific driver. Knowing this is crucial because the drivers you will need to install are for the CH340 chip, not the HW-597 board itself.
You likely installed the parallel (printer) driver instead of the serial driver. Uninstall and reinstall CH341SER.EXE specifically. hw-597 driver
The good news is that the CH340 driver is well-supported across all major operating systems. Below are the methods for Windows, macOS, and Linux.
(like the CP2102) if you continue to experience driver instability? On macOS High Sierra or later, navigate to
Open a terminal window and execute the command dmesg | grep tty . The output should display a message indicating that a CH340 device has been attached to a port like ttyUSB0 .
Users might encounter issues with the HW-597, usually related to driver recognition or wiring. The "secret sauce" inside the HW-597 is its controller chip
Avoid USB hubs if possible; plug the HW-597 directly into your computer. "Serial Port Busy" or "Access Denied"
MAX30100 sensor;
| Feature Category | Specifics | | :--- | :--- | | | CH340G chip, which is a widely-used USB-to-serial converter | | USB Interface | USB 2.0 | | TTL Output | 6-pin header | | Supported Voltages | 3.3V and 5V (selectable via jumper) | | Supported Baud Rates | 300 bps up to 1.5 Mbps | | Supported OS (for CH340 driver) | Windows 2000/XP/Vista/7/8/10/11; macOS; Linux |