added preprocessor statements to switch out MAC Addresses at compile time

ROFLS_Arena_Remote/ROFLS_Arena_Remote.ino

@@ -15,6 +15,11 @@
 const bool writeBoardID = false;
 int boardID = 1;
 
+// set Arena, switches the MAC addresses out
+// 1 = Arena A (Ant)
+// 2 = Arena B (Beetle)
+#define ARENA 1
+
 // Hardware connections
 #define START_BTN_PIN 10
 #define PAUSE_BTN_PIN 8
@@ -46,10 +51,13 @@ bool sendDATAvar = false;
 // ESP-NOW config
 
 // REPLACE WITH YOUR RECEIVER MAC Address
-// A Arena
-uint8_t broadcastAddress[] = {0x84, 0xFC, 0xE6, 0xC7, 0x1A, 0x8C};
-// B Arena
-//uint8_t broadcastAddress[] = {0xD8, 0x3B, 0xDA, 0xC9, 0x0C, 0xEE};
+#if ARENA == 1
+  // A Arena Controller MAC Address
+  uint8_t broadcastAddress[] = {0x84, 0xFC, 0xE6, 0xC7, 0x1A, 0x8C};
+#elif ARENA == 2
+  // B Arena Controller MAC Address
+  uint8_t broadcastAddress[] = {0xD8, 0x3B, 0xDA, 0xC9, 0x0C, 0xEE};
+#endif
 
 // Structure example to send data
 // Must match the receiver structure