diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+*
+!.gitignore
+!midilyre-gen.py
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diff --git a/midilyre-gen.py b/midilyre-gen.py
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+++ b/midilyre-gen.py
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+import mido
+import sys
+import os
+
+keymap = ['z', ' ', 'x', ' ', 'c', 'v', ' ', 'b', ' ', 'n', ' ', 'm', 'a', ' ', 's', ' ', 'd', 'f', ' ', 'g', ' ', 'h', ' ', 'j', 'q', ' ', 'w', ' ', 'e', 'r', ' ', 't', ' ', 'y', ' ', 'u']
+
+octave_range = (48, 84)  #change to allow other ranges (within 0-127, see midi note numbers), range must be <=36 (3 octaves)
+offset = 5 #transpose how many steps up or down (positive = higher); for shifting to C major to eliminate half notes
+delay = 5000 #ms before arduino code runs for alt tabbing to genshin etc
+
+#genshin ignores SendInput without admin, since it runs elevated
+#to work around this (and also most anticheat detection if any),
+#this code does not play via pyautogui but generates arduino code for the macro instead,
+#in order to play it directly as from an HID device instead of virtual keystrokes
+
+#midilyre-gen.py <file path>
+#generates a simple 32u4 or SAMD micro based Arduino-compatible code file that performs the inputted midi on Genshin Impact's lyre via keystrokes.
+
+try:
+    mid_file = sys.argv[1]
+except IndexError:
+    print('Please include the input file path as an argument!')
+    quit()
+
+mid = mido.MidiFile(mid_file)
+print('Opening: ' + str(mid))
+
+try:
+    os.mkdir('output')
+except:
+    pass
+
+with open('output/' + mid.filename.rsplit('.', 1)[0] + '.ino', "w") as f:
+    f.write('#include <Keyboard.h>\n\n')
+    f.write('void setup() {\n')
+    f.write('  Keyboard.begin();\n')
+    f.write('  delay(' + str(delay) + ');\n')
+
+    for msg in mid:
+        if msg.type == 'key_signature':
+            print(str(msg))
+
+        if msg.type == 'note_on':
+            if msg.velocity != 0:  #not muted
+                note = msg.note + offset
+                if note < octave_range[0] or note >= octave_range[1] or (note % 12) in [1, 3, 6, 8, 10]: #out of range and sharp not supported
+                    print('Discarding unsupported note: ' + str(note))
+                else:
+                    f.write('  Keyboard.write(\'' + keymap[(note - octave_range[0])] + '\');\n')
+
+        if msg.time != 0: #only include actual delays
+            f.write('  delay(' + str(msg.time * 1000) + ");\n")  #mido.tick2second(msg.time, ticks_per_beat = mid.ticks_per_beat, tempo = current_tempo) needed if single track object
+
+    f.write('}\n')
+    f.write('void loop() {}')
+
+print("Finished!")
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