Hold down the physical Reset button on your microcontroller, click Upload in the IDE, and release the button the exact moment the status bar changes to "Uploading...". 🔗 Connecting HW-417-V1.2 to a Microcontroller
Because the HW-417 V1.2 relies entirely on the FTDI chip architecture, you do not need proprietary third-party software. Instead, download the official drivers provided directly by Future Technology Devices International (FTDI). Drivers - FTDI
If running on batteries, put the microcontroller into sleep mode and use interrupt-driven detection from the HW-417-V1.2.
When wiring the HW-417 to a microcontroller, remember that data transmission crosses over. Connect TX on the HW-417 to RX on the MCU, and RX on the HW-417 to TX on the MCU.
Most modern Linux distributions (Ubuntu, Debian, Fedora, Arch) come pre-packaged with the ch341 kernel module. The HW-417 V1.2 should work out of the box. Granting User Permissions:
Choose between the two primary formats based on your installation preference:
The HAL is implemented as a set of APIs that provide a interface to the SoC's peripherals. The HAL APIs are designed to be hardware-independent, allowing the driver to be easily ported to different SoCs.
Wait for the dialog box that says "Driver install success!" to appear. Plug your HW-417 V1.2 module into an open USB port. Verifying Windows Installation: Right-click the Start menu and open . Expand the Ports (COM & LPT) section.
: The HW-417 V1.2 features a physical onboard solder jumper or header pin selector . This allows operators to easily toggle between 3.3V and 5V logic paths , preventing fragile 3.3V microcontrollers (like the ESP32) from burning out due to overvoltage.
Linux distributions (Ubuntu, Debian, Fedora) have the CH340 driver built directly into the Linux kernel ( ch341.ko ). No installation is required.