Changed R10 to 220 Ω

It'll make the LED a bit brighter, and it's a more common value.

microcontroller.sch

 U 1 1 5893124B
 P 10000 5050
 F 0 "R10" V 10080 5050 50  0000 C CNN
-F 1 "300Ω" V 10000 5050 50  0000 C CNN
+F 1 "220Ω" V 10000 5050 50  0000 C CNN
 F 2 "Resistors_SMD:R_0402" V 9930 5050 50  0001 C CNN
 F 3 "" H 10000 5050 50  0000 C CNN
 	1    10000 5050

pd-buddy-sink.kicad_pcb

   (general
     (links 138)
     (no_connects 0)
-    (area 72.101904 55 127.148096 85.71)
+    (area 81.424999 57.424999 111.575001 82.575001)
     (thickness 1.6)
     (drawings 10)
     (tracks 548)
     (fp_text reference R10 (at 2 0.25 180) (layer F.SilkS)
       (effects (font (size 0.65 0.65) (thickness 0.12)))
     )
-    (fp_text value 300Ω (at 0 1.45 90) (layer F.Fab)
+    (fp_text value 220Ω (at 0 1.45 90) (layer F.Fab)
       (effects (font (size 1 1) (thickness 0.15)))
     )
     (fp_text user %R (at 0 -1.35 90) (layer F.Fab)