diff --git a/src/main.cpp b/src/main.cpp
index 21f15b1..f57de7f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -57,7 +57,6 @@ bool blinking = false;
 unsigned long blinkStart = 0;
 unsigned long now_ms, last_ms = 0; //millis() timers
 unsigned long last_battery_sample = 0;
-unsigned long const start = millis();
 bool secondImuActive = false;
 
 void setConfig(DeviceConfig newConfig)
diff --git a/src/mpu6050sensor.cpp b/src/mpu6050sensor.cpp
index 1919dd7..6568b0a 100644
--- a/src/mpu6050sensor.cpp
+++ b/src/mpu6050sensor.cpp
@@ -37,6 +37,8 @@ namespace {
     }
 }
 
+bool hasNewData = false;
+
 void gatherCalibrationData(MPU9250 &imu);
 
 void MPU6050Sensor::motionSetup(DeviceConfig * config) {
@@ -122,11 +124,15 @@ void MPU6050Sensor::motionLoop() {
         q[3] = rawQuat.w;
         quaternion.set(-q[1], q[0], q[2], q[3]);
         quaternion *= sensorOffset;
+        hasNewData = true;
     }
 }
 
 void MPU6050Sensor::sendData() {
-    sendQuat(&quaternion, PACKET_ROTATION);
+    if(hasNewData) {
+        sendQuat(&quaternion, PACKET_ROTATION);
+        hasNewData = false;
+    }
 }
 
 void MPU6050Sensor::startCalibration(int calibrationType) {