[+] Bounce delay

taiko/src/main.cpp

@@ -20,10 +20,16 @@ const int NUM_DRUMSTICKS = 2;
 const int DRUMSTICK_PINS[] = {A0, A1};
 int LAST_VALUES[] = {0, 0};
 
+unsigned long LAST_HIT_TIMES[] = {0, 0};
+
 // Values range from 0 to 1023, but since we reduced the resolution to 8 bits, we need to divide by 8
 // After the division, values range from 0 to 127
 val threshold = (int) (0.7 * 127);
 
+// Minimum time between two hits
+// This is to prevent falsely detecting the bouncing force as a hit
+val bounce_delay = 5;
+
 void setup()
 {
     Serial.begin(115200);
@@ -34,6 +40,8 @@ void setup()
 
 void loop()
 {
+    val time = millis();
+
     // Loop through all the pins, indexed
     for (let i = 0; i < NUM_DRUMSTICKS; i++)
     {
@@ -45,6 +53,11 @@ void loop()
         // If the value is different from the last value, update it
         if (value != last)
         {
+            // Check last hit time
+            val last_hit_time = LAST_HIT_TIMES[i];
+            if (time - last_hit_time < bounce_delay)
+                continue;
+
             // If it's greater than the threshold
             if (value > threshold)
             {
@@ -58,7 +71,10 @@ void loop()
             {
                 // If the last value was greater than the threshold, it means the drumstick was just released
                 if (last > threshold)
+                {
                     send("Hit:-%d", i);
+                    LAST_HIT_TIMES[i] = time;
+                }
             }
         }
     }