Frame rate is a debug option again

MockBand.ino

@@ -176,8 +176,10 @@ void loop() {
 #error DPAD isn't implemented yet
 #endif
 
-    // Log sample rate to the second Y axis
-    buttonState.axis[3] = samples & 0xff;
+#ifdef DEBUGY0
+    // Log sample rate to the first Y axis
+    buttonState.axis[1] = samples & 0xff;
+#endif
 
     // Send an update
     HID().SendReport(0, (uint8_t *)&buttonState, 27);

docs/tech-notes.md

@@ -10,9 +10,9 @@ hopefully at least my notes will still be around.
 Sample Rate
 -----------
 
-The number of samples taken since the last HID report
-is sent as the second Y axis,
-which doesn't appear to be used by anything else.
+If `DEBUGY0' is defined,
+the number of samples taken since the last HID report
+is sent as Y axis on hat 0.
 You can use the 
 [included gamepad tester](gamepad.html),
 to see the approximate number of samples as an integer.