diff --git a/firmware/braille_xr/braille_xr.ino b/firmware/braille_xr/braille_xr.ino
index 14bf365..5e7cdd6 100644
--- a/firmware/braille_xr/braille_xr.ino
+++ b/firmware/braille_xr/braille_xr.ino
@@ -12,12 +12,13 @@ char in_char = ' ';
 struct ServoPin {
   Servo servo;
   int pin;
+  int spin; // -1 left, +1 right
 };
 
 ServoPin servos[6] = {
-  {Servo(), 14}, {Servo(), 5},
-  {Servo(), 12}, {Servo(), 4},
-  {Servo(), 13}, {Servo(), 2} // 19 and 21 are untested
+  {Servo(), 14, +1}, {Servo(), 5, -1},
+  {Servo(), 12, -1}, {Servo(), 4, +1},
+  {Servo(), 13, +1}, {Servo(), 2, -1} // 19 and 21 are untested
 };
 
 // braille alphabet
@@ -248,8 +249,8 @@ void loop() {
     BrailleChar bc = braille_map[in_char];
     for (int i = 0; i < 6; i++) {
       int state = bc.servo_states[i];
-      int s = i % 2 == 0 ? state : (1 - state);
-      servos[i].servo.write(s * 180);
+      int spin  = servos[i].spin < 0 ? (1 - state) : state;
+      servos[i].servo.write(spin * 90);
     }
 
     old_char = in_char;