rendered paste body#include <HardwareSerial.h>// Match the specific physical RX2/TX2 pins you found on your board#define RX2_PIN 16 #define TX2_PIN 17// CH9329 Modifier Keys definitions#define MOD_NONE 0x00#define MOD_LCTRL 0x01#define MOD_LSHIFT 0x02#define MOD_LALT 0x04#define MOD_LGUI 0x08 // Windows Key / Command Key#define MOD_RCTRL 0x10#define MOD_RSHIFT 0x20#define MOD_RALT 0x40// CH9329 Special Keycodes definitions#define KEY_ENTER 0x28#define KEY_SPACE 0x2C#define KEY_VOLUME_UP 0xE9 // Consumer control usage mapping for audio// Send a standard keyboard packet over hardware UARTvoid sendKey(uint8_t modifier, uint8_t keycode) { uint8_t packet[14] = { 0x57, 0xAB, 0x00, 0x02, 0x08, modifier, 0x00, keycode, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t sum = 0; for (int i = 0; i < 13; i++) sum += packet[i]; packet[13] = sum; Serial2.write(packet, 14); delay(50); // Clear the keys automatically to prevent stuck buttons uint8_t releasePacket[14] = { 0x57, 0xAB, 0x00, 0x02, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; sum = 0; for (int i = 0; i < 13; i++) sum += releasePacket[i]; releasePacket[13] = sum; Serial2.write(releasePacket, 14); delay(50);}// Custom ASCII-to-USB HID translation matrix void typeString(const char* str) { for (int i = 0; str[i] != '\0'; i++) { char c = str[i]; uint8_t modifier = MOD_NONE; uint8_t keycode = 0x00; if (c >= 'a' && c <= 'z') keycode = 0x04 + (c - 'a'); else if (c >= 'A' && c <= 'Z') { keycode = 0x04 + (c - 'A'); modifier = MOD_LSHIFT; } else if (c >= '1' && c <= '9') keycode = 0x1E + (c - '1'); else if (c == '0') keycode = 0x27; else if (c == ':') { keycode = 0x33; modifier = MOD_LSHIFT; } else if (c == '/') keycode = 0x38; else if (c == '.') keycode = 0x37; else if (c == '-') keycode = 0x2D; else if (c == '=') keycode = 0x2E; else if (c == '?') { keycode = 0x38; modifier = MOD_LSHIFT; } else if (c == '&') { keycode = 0x24; modifier = MOD_LSHIFT; } else if (c == '_') { keycode = 0x2D; modifier = MOD_LSHIFT; } // Added for exact matching else if (c == ' ') keycode = KEY_SPACE; if (keycode != 0x00) { sendKey(modifier, keycode); delay(25); // Slight typing delay for stability } }}void setup() { // Establish UART link to CH9329 at standard 9600 baud rate Serial2.begin(9600, SERIAL_8N1, RX2_PIN, TX2_PIN); // Wait for the computer to recognize the CH9329 device profile delay(3000); // --- macOS Assistant Screen Bypass Routine --- sendKey(MOD_NONE, 0x1D); // "Z" delay(1500); sendKey(MOD_NONE, 0x38); // "/" delay(1500); sendKey(MOD_NONE, KEY_ENTER); // Finish menu delay(1500); // --- Force Volume to Maximum --- for(int i = 0; i < 25; i++) { sendKey(MOD_NONE, KEY_VOLUME_UP); delay(50); } delay(1000); // --- Multicast Operating System Launch Loops --- // Sequence A: Windows Execution sendKey(MOD_GUI, 0x15); // Opens Run Dialog (Win+R) delay(600); typeString("start https://www.youtube.com/watch?v=dQw4w9WgXcQ"); sendKey(MOD_NONE, KEY_ENTER); delay(1500); // Sequence B: macOS Execution sendKey(MOD_GUI, KEY_SPACE); // Opens Spotlight Search (Cmd+Space) delay(600); typeString("open https://www.youtube.com/watch?v=dQw4w9WgXcQ"); sendKey(MOD_NONE, KEY_ENTER); delay(1500); // Sequence C: Linux Terminal Execution sendKey(MOD_LCTRL | MOD_LALT, 0x17); // Opens Terminal (Ctrl+Alt+T) delay(1000); typeString("xdg-open https://www.youtube.com/watch?v=dQw4w9WgXcQ && exit"); sendKey(MOD_NONE, KEY_ENTER); delay(1500); // Sequence D: ChromeOS Tab Generation sendKey(MOD_LCTRL, 0x17); // Creates Browser Tab (Ctrl+T) delay(600); typeString("https://www.youtube.com/watch?v=dQw4w9WgXcQ"); sendKey(MOD_NONE, KEY_ENTER);}void loop() { // Empty loop forces single execution sequence on power insertion}