 Switch triggerButton = Switch(triggerButtonPin);
 Switch resetButton = Switch(resetButtonPin);
 
-uint8_t heartbeatLEDPin = 4;
+uint8_t heartbeatLEDGreenPin = 5;
+uint8_t heartbeatLEDRedPin = 6;
 
 unsigned long lastHeartbeat = 0;
 bool isCommHealthy = false;

        validateAck(sendByte(ackVal));
    }

    digitalWrite(heartbeatLEDPin, isCommHealthy);
#else
    if (radio.available()) {
        byte recvByte;

        radio.writeAckPayload(1, &ackVal, 1);
    }
#endif
}