diff --git a/radio/src/dmafifo.h b/radio/src/dmafifo.h
index d4aaef4d3..16e3e7892 100644
--- a/radio/src/dmafifo.h
+++ b/radio/src/dmafifo.h
@@ -43,6 +43,11 @@ class DMAFifo
       return N;
     }
 
+    uint8_t last(int index)
+    {
+      return fifo[(2*N - stream->NDTR - index) & (N-1)];
+    }
+
     bool isEmpty()
     {
 #if defined(SIMU)
diff --git a/radio/src/targets/horus/board.cpp b/radio/src/targets/horus/board.cpp
index e271b873b..efb4afa92 100644
--- a/radio/src/targets/horus/board.cpp
+++ b/radio/src/targets/horus/board.cpp
@@ -51,33 +51,31 @@ void init2MhzTimer()
 // Starts TIMER at 1000Hz
 void init1msTimer()
 {
-  INTERRUPT_5MS_TIMER->ARR = 999;     // 1mS
-  INTERRUPT_5MS_TIMER->PSC = (PERI1_FREQUENCY * TIMER_MULT_APB1) / 1000000 - 1;  // 1uS from 30MHz
-  INTERRUPT_5MS_TIMER->CCER = 0;
-  INTERRUPT_5MS_TIMER->CCMR1 = 0;
-  INTERRUPT_5MS_TIMER->EGR = 0;
-  INTERRUPT_5MS_TIMER->CR1 = 5;
-  INTERRUPT_5MS_TIMER->DIER |= 1;
-  NVIC_EnableIRQ(TIM8_TRG_COM_TIM14_IRQn);
-  NVIC_SetPriority(TIM8_TRG_COM_TIM14_IRQn, 7);
+  INTERRUPT_1MS_TIMER->ARR = 999;     // 1mS
+  INTERRUPT_1MS_TIMER->PSC = (PERI1_FREQUENCY * TIMER_MULT_APB1) / 1000000 - 1;  // 1uS from 30MHz
+  INTERRUPT_1MS_TIMER->CCER = 0;
+  INTERRUPT_1MS_TIMER->CCMR1 = 0;
+  INTERRUPT_1MS_TIMER->EGR = 0;
+  INTERRUPT_1MS_TIMER->CR1 = 5;
+  INTERRUPT_1MS_TIMER->DIER |= 1;
+  NVIC_EnableIRQ(INTERRUPT_1MS_IRQn);
+  NVIC_SetPriority(INTERRUPT_1MS_IRQn, 7);
 }
 
 // TODO use the same than board_sky9x.cpp
 void interrupt1ms()
 {
-  static uint32_t pre_scale;       // Used to get 10 Hz counter
+  static uint8_t pre_scale;       // Used to get 10 Hz counter
 
   ++pre_scale;
 
-  if (pre_scale == 5 || pre_scale == 10) {
-
 #if defined(HAPTIC)
+  if (pre_scale == 5 || pre_scale == 10) {
     DEBUG_TIMER_START(debugTimerHaptic);
     HAPTIC_HEARTBEAT();
     DEBUG_TIMER_STOP(debugTimerHaptic);
-#endif
-
   }
+#endif
 
   if (pre_scale == 10) {
     pre_scale = 0;
@@ -89,11 +87,20 @@ void interrupt1ms()
   DEBUG_TIMER_START(debugTimerRotEnc);
   checkRotaryEncoder();
   DEBUG_TIMER_STOP(debugTimerRotEnc);
+
+#if defined(LUA)
+  if (telemetryProtocol == PROTOCOL_FRSKY_SPORT && outputTelemetryBufferTrigger && outputTelemetryBufferSize > 0) {
+    if (telemetryFifo.last(-2) == 0x7E && telemetryFifo.last(-1) == outputTelemetryBufferTrigger) {
+      outputTelemetryBufferTrigger = 0;
+      sportSendBuffer(outputTelemetryBuffer, outputTelemetryBufferSize);
+    }
+  }
+#endif
 }
 
-extern "C" void TIM8_TRG_COM_TIM14_IRQHandler()
+extern "C" void INTERRUPT_1MS_IRQHandler()
 {
-  TIM14->SR &= ~TIM_SR_UIF;
+  INTERRUPT_1MS_TIMER->SR &= ~TIM_SR_UIF;
   interrupt1ms();
   DEBUG_INTERRUPT(INT_1MS);
 }
@@ -120,7 +127,7 @@ void boardInit()
                          GPS_RCC_AHB1Periph,
                          ENABLE);
 
-  RCC_APB1PeriphClockCmd(INTERRUPT_5MS_RCC_APB1Periph |
+  RCC_APB1PeriphClockCmd(INTERRUPT_1MS_RCC_APB1Periph |
                          TIMER_2MHz_RCC_APB1Periph |
                          AUDIO_RCC_APB1Periph |
                          SERIAL_RCC_APB1Periph |
diff --git a/radio/src/targets/horus/hal.h b/radio/src/targets/horus/hal.h
index 26a44eb38..5883f5dd3 100644
--- a/radio/src/targets/horus/hal.h
+++ b/radio/src/targets/horus/hal.h
@@ -399,11 +399,11 @@
 #define TRAINER_DMA_FLAG_TC             DMA_IT_TCIF2
 #define TRAINER_TIMER_FREQ              (PERI1_FREQUENCY * TIMER_MULT_APB1)
 
-// 5ms Interrupt
-#define INTERRUPT_5MS_RCC_APB1Periph    RCC_APB1Periph_TIM14
-#define INTERRUPT_5MS_TIMER             TIM14
-#define INTERRUPT_5MS_IRQn              TIM8_TRG_COM_TIM14_IRQn
-#define INTERRUPT_5MS_IRQHandler        TIM8_TRG_COM_TIM14_IRQHandler
+// 1ms Interrupt
+#define INTERRUPT_1MS_RCC_APB1Periph    RCC_APB1Periph_TIM14
+#define INTERRUPT_1MS_TIMER             TIM14
+#define INTERRUPT_1MS_IRQn              TIM8_TRG_COM_TIM14_IRQn
+#define INTERRUPT_1MS_IRQHandler        TIM8_TRG_COM_TIM14_IRQHandler
 
 // 2MHz Timer
 #define TIMER_2MHz_RCC_APB1Periph       RCC_APB1Periph_TIM7