commit 3c29bc6b4973143cb84d5294a63193d9f1300ac2
Author: mikula <mikula.lajos@e5vos.hu>
Date:   Sat Dec 13 17:47:54 2025 +0100

    Add digikeyboard.ino

diff --git a/digikeyboard.ino b/digikeyboard.ino
new file mode 100644
index 0000000..3806c2f
--- /dev/null
+++ b/digikeyboard.ino
@@ -0,0 +1,55 @@
+#include "DigiKeyboard.h"
+#include <stdio.h>
+
+#define KEYPAD_1                (  89  | 0xF000 )
+#define KEYPAD_2                (  90  | 0xF000 )
+#define KEYPAD_3                (  91  | 0xF000 )
+#define KEYPAD_4                (  92  | 0xF000 )
+#define KEYPAD_5                (  93  | 0xF000 )
+#define KEYPAD_6                (  94  | 0xF000 )
+#define KEYPAD_7                (  95  | 0xF000 )
+#define KEYPAD_8                (  96  | 0xF000 )
+#define KEYPAD_9                (  97  | 0xF000 )
+#define KEYPAD_0                (  98  | 0xF000 )
+
+int keypad[10] = {KEYPAD_0, KEYPAD_1, KEYPAD_2, KEYPAD_3, KEYPAD_4, KEYPAD_5, KEYPAD_6, KEYPAD_7, KEYPAD_8, KEYPAD_9};
+
+void typeAltChar(char c){
+  digitalWrite(1, HIGH);   
+  char alt_code[4];
+  snprintf(alt_code, 4, "%d", c); // convert int to decimal
+  int i=0;
+  while(alt_code[i]!=0){
+      if(i > 0 && alt_code[i-1]==alt_code[i]){
+        DigiKeyboard.sendKeyPress(0,MOD_ALT_LEFT); // Release all keys except "ALT"
+      }
+      DigiKeyboard.sendKeyPress(keypad[alt_code[i]-'0'],MOD_ALT_LEFT);
+      ++i;
+  }
+  DigiKeyboard.sendKeyPress(0,0);   
+  digitalWrite(1, LOW);
+}
+
+void typeAltString(char* string){
+  int i=0;
+  while(string[i]!=0){
+    typeAltChar(string[i]);
+    ++i;
+  }
+}
+
+void setup() {
+  pinMode(1, OUTPUT); // setup LED
+
+  // setup keyboard
+  DigiKeyboard.sendKeyStroke(0);
+  
+  DigiKeyboard.sendKeyStroke(KEY_R, MOD_GUI_LEFT); // WIN+R open run box
+  DigiKeyboard.delay(300);
+  // using ALT keys to be keyboard layout agnostic https://en.wikipedia.org/wiki/Alt_code
+  typeAltString("echo test");
+  DigiKeyboard.sendKeyStroke(KEY_ENTER);
+}
+
+void loop() {
+}
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