if (digitalRead(tiltPin) == HIGH) delay(50); if (digitalRead(tiltPin) == HIGH) // confirmed tilt
Restart your Mac to initialize the kernel extension.
Look for , where x represents the assigned port number (e.g., COM3). 2. macOS Installation
If the driver is installed but you cannot upload code or view serial data, perform a hardware loopback test to isolate the issue: Unplug the HW-417 module from your PC. Remove any wires attached to the target device. hw-417-v1.2 driver
HW-417-V1.2 works, but another COM port device fails. Solution: Change the COM port assigned to the CH340 driver:
This usually means a driver signature issue. Try downloading the latest version from the WCH website linked above.
: Download the latest release, extract the archive, and move the .app file to your Applications folder. Open it and select Install FTDI USB Serial Dext VCP . Verification : Plug the HW-417 into your USB port. Open Device Manager (Windows) or System Report (macOS). macOS Installation If the driver is installed but
Inspect the USB cable or try a different USB port. Avoid using unpowered USB hubs. 2. The Module Powers On but No COM Port Appears
Modern versions of macOS have built-in FTDI drivers that work in many cases. However, if your device is not recognized, you should install the official driver.
In the world of embedded systems, DIY electronics, and industrial automation, few components are as ubiquitous yet misunderstood as the . At first glance, this might appear to be a specialized industrial relay controller or a sensor module. However, for experienced makers, technicians, and IoT developers, the HW-417-V1.2 is widely recognized as a specific revision of a KY-017 Mercury Tilt Switch Module or a variant of a single-channel relay driver board commonly sold on platforms like Amazon, AliExpress, and Banggood. Solution: Change the COM port assigned to the
Understanding the physical layout and capabilities of the HW-417 module is vital before beginning the software setup. Specification FTDI FT232RL (or compatible clone) Interface Type USB 2.0 to TTL Serial UART USB Connector USB Mini-B or USB Type-A (variant dependent) Operating Voltage Dual 3.3V and 5V (Selectable via physical jumper) Data Transfer Rates 300 baud up to 3 Megabaud (TTL levels) Onboard Indicators Power (PWR), Receive (RX), and Transmit (TX) LEDs Pinout Header DTR, RXD, TXD, VCC, CTS, GND The Importance of the Voltage Jumper
By following this guide, you should be able to find, install, and update the HW-417-V1.2 driver with ease. If you have any further questions or issues, don't hesitate to seek support.
This can happen if a generic Windows driver was installed by mistake, or if you have a counterfeit FTDI chip. The solution is to uninstall the device from Device Manager, making sure to delete its driver software, and then run the official FTDI Clean utility before reinstalling the driver from scratch.