As soon as the USB snapped into place, the computer didn't ask for drivers. It simply saw a "HID Keyboard Device." The V1.8 chip handled the entire USB protocol stack internally. 2. The Conversion
The CNC machine sent a string: X=105.4 Y=20.2 .The V1.8 chip received this at 9600 baud. It instantly translated the ASCII characters into . 3. The Result wch uart to kb-ms_v1.8
The "v1.8" designation typically refers to a specific hardware revision or firmware iteration of the WCH evaluation board. This version generally features a dual-port architecture. One port is configured as a UART communication interface, allowing connection to external microcontrollers or sensors, while the other connects to the host PC via USB. The chipset, often the CH9350, handles the complex task of encapsulating serial data into USB HID reports. This process allows the host computer to interpret incoming serial commands as physical keystrokes or mouse movements without the need for specialized drivers, utilizing the plug-and-play nature of standard USB HID protocols. As soon as the USB snapped into place,
Elias wired the CNC’s transmit (TX) pin to the pin. He powered the board via a micro-USB cable plugged into his workstation. 1. The Handshake The Conversion The CNC machine sent a string: X=105