diff --git a/src/main/scheduler/scheduler_tasks.c b/src/main/scheduler/scheduler_tasks.c
index 3699442c9..9d5062ee2 100644
--- a/src/main/scheduler/scheduler_tasks.c
+++ b/src/main/scheduler/scheduler_tasks.c
@@ -160,7 +160,7 @@ cfTask_t cfTasks[TASK_COUNT] = {
         .taskName = "TELEMETRY",
         .taskFunc = taskTelemetry,
         .desiredPeriod = 1000000 / 250,         // 250 Hz
-        .staticPriority = TASK_PRIORITY_IDLE,
+        .staticPriority = TASK_PRIORITY_LOW,
     },
 #endif
 
diff --git a/src/main/target/ALIENFLIGHTF1/config.c b/src/main/target/ALIENFLIGHTF1/config.c
index b5bea8104..083affa5b 100644
--- a/src/main/target/ALIENFLIGHTF1/config.c
+++ b/src/main/target/ALIENFLIGHTF1/config.c
@@ -29,19 +29,16 @@
 
 #include "drivers/sensor.h"
 #include "drivers/accgyro.h"
-#include "drivers/compass.h"
 #include "drivers/system.h"
 #include "drivers/timer.h"
 #include "drivers/pwm_rx.h"
 #include "drivers/serial.h"
 #include "drivers/pwm_output.h"
-#include "drivers/max7456.h"
 #include "drivers/io.h"
 #include "drivers/pwm_mapping.h"
 
 #include "sensors/sensors.h"
 #include "sensors/gyro.h"
-#include "sensors/compass.h"
 #include "sensors/acceleration.h"
 #include "sensors/barometer.h"
 #include "sensors/boardalignment.h"
@@ -54,9 +51,6 @@
 #include "io/rc_controls.h"
 #include "io/rc_curves.h"
 #include "io/ledstrip.h"
-#include "io/gps.h"
-#include "io/osd.h"
-#include "io/vtx.h"
 
 #include "rx/rx.h"
 
diff --git a/src/main/target/ALIENFLIGHTF1/target.h b/src/main/target/ALIENFLIGHTF1/target.h
index 41adcaf6f..77750ca13 100644
--- a/src/main/target/ALIENFLIGHTF1/target.h
+++ b/src/main/target/ALIENFLIGHTF1/target.h
@@ -24,113 +24,33 @@
 
 #define BEEPER                  PA12
 
-#define BARO_XCLR_PIN           PC13
-#define BARO_EOC_PIN            PC14
-
-#define INVERTER                PB2 // PB2 (BOOT1) abused as inverter select GPIO
-#define INVERTER_USART          USART2
-
 #define USE_EXTI
 #define MAG_INT_EXTI PC14
-#define EXTI_CALLBACK_HANDLER_COUNT 3 // MPU data ready, MAG data ready, BMP085 EOC
+#define EXTI_CALLBACK_HANDLER_COUNT 1 // MPU data ready
 //#define DEBUG_MPU_DATA_READY_INTERRUPT
 #define USE_MPU_DATA_READY_SIGNAL
-//#define DEBUG_MAG_DATA_READY_INTERRUPT
-#define USE_MAG_DATA_READY_SIGNAL
-
-// SPI2
-// PB15 28 SPI2_MOSI
-// PB14 27 SPI2_MISO
-// PB13 26 SPI2_SCK
-// PB12 25 SPI2_NSS
-
-#define USE_SPI
-#define USE_SPI_DEVICE_2
-
-#define NAZE_SPI_INSTANCE       SPI2
-#define NAZE_SPI_CS_GPIO        GPIOB
-#define NAZE_SPI_CS_PIN         PB12
-#define NAZE_CS_GPIO_CLK_PERIPHERAL RCC_APB2Periph_GPIOB
-
-// We either have this 16mbit flash chip on SPI or the MPU6500 acc/gyro depending on board revision:
-#define M25P16_CS_GPIO          NAZE_SPI_CS_GPIO
-#define M25P16_CS_PIN           NAZE_SPI_CS_PIN
-#define M25P16_SPI_INSTANCE     NAZE_SPI_INSTANCE
-
-#define MPU6500_CS_GPIO_CLK_PERIPHERAL  NAZE_CS_GPIO_CLK_PERIPHERAL
-#define MPU6500_CS_GPIO                 NAZE_SPI_CS_GPIO
-#define MPU6500_CS_PIN                  NAZE_SPI_CS_PIN
-#define MPU6500_SPI_INSTANCE            NAZE_SPI_INSTANCE
-
-#define USE_FLASHFS
-#define USE_FLASH_M25P16
 
 #define GYRO
-#define USE_GYRO_MPU3050
 #define USE_GYRO_MPU6050
-#define USE_GYRO_MPU6500
-#define USE_GYRO_SPI_MPU6500
 
-#define GYRO_MPU3050_ALIGN      CW0_DEG
 #define GYRO_MPU6050_ALIGN      CW0_DEG
-#define GYRO_MPU6500_ALIGN      CW0_DEG
 
 #define ACC
-#define USE_ACC_ADXL345
-#define USE_ACC_BMA280
-#define USE_ACC_MMA8452
 #define USE_ACC_MPU6050
-#define USE_ACC_MPU6500
-#define USE_ACC_SPI_MPU6500
 
-#define ACC_ADXL345_ALIGN       CW270_DEG
 #define ACC_MPU6050_ALIGN       CW0_DEG
-#define ACC_MMA8452_ALIGN       CW90_DEG
-#define ACC_BMA280_ALIGN        CW0_DEG
-#define ACC_MPU6500_ALIGN       CW0_DEG
-
-#define BARO
-#define USE_BARO_MS5611
-#define USE_BARO_BMP085
-#define USE_BARO_BMP280
-
-#define MAG
-#define USE_MAG_HMC5883
-#define MAG_HMC5883_ALIGN       CW180_DEG
-
-#define SONAR
-#define SONAR_TRIGGER_PIN       PB0
-#define SONAR_ECHO_PIN          PB1
-#define SONAR_TRIGGER_PIN_PWM   PB8
-#define SONAR_ECHO_PIN_PWM      PB9
-
-#define DISPLAY
 
 #define USE_UART1
 #define USE_UART2
 #define USE_UART3
-#define USE_SOFTSERIAL1
-#define USE_SOFTSERIAL2
-#define SERIAL_PORT_COUNT       5
+#define SERIAL_PORT_COUNT       3
 
-#define SOFTSERIAL_1_TIMER TIM3
-#define SOFTSERIAL_1_TIMER_RX_HARDWARE 4 // PWM 5
-#define SOFTSERIAL_1_TIMER_TX_HARDWARE 5 // PWM 6
-#define SOFTSERIAL_2_TIMER TIM3
-#define SOFTSERIAL_2_TIMER_RX_HARDWARE 6 // PWM 7
-#define SOFTSERIAL_2_TIMER_TX_HARDWARE 7 // PWM 8
-
-// USART3 only on NAZE32_SP - Flex Port
 #define UART3_RX_PIN            PB11
 #define UART3_TX_PIN            PB10
 
 #define USE_I2C
 #define I2C_DEVICE (I2CDEV_2)
 
-// #define SOFT_I2C // enable to test software i2c
-// #define SOFT_I2C_PB1011 // If SOFT_I2C is enabled above, need to define pinout as well (I2C1 = PB67, I2C2 = PB1011)
-// #define SOFT_I2C_PB67
-
 #define USE_ADC
 #define CURRENT_METER_ADC_PIN   PB1
 #define VBAT_ADC_PIN            PA4
diff --git a/src/main/target/ALIENFLIGHTF1/target.mk b/src/main/target/ALIENFLIGHTF1/target.mk
index e5fbfe8c9..c3a0ba80e 100644
--- a/src/main/target/ALIENFLIGHTF1/target.mk
+++ b/src/main/target/ALIENFLIGHTF1/target.mk
@@ -1,20 +1,8 @@
 F1_TARGETS  += $(TARGET)
-FEATURES    = ONBOARDFLASH HIGHEND 
+FEATURES    = HIGHEND 
 
 TARGET_SRC = \
-            drivers/accgyro_adxl345.c \
-            drivers/accgyro_bma280.c \
-            drivers/accgyro_l3g4200d.c \
-            drivers/accgyro_mma845x.c \
             drivers/accgyro_mpu.c \
-            drivers/accgyro_mpu3050.c \
             drivers/accgyro_mpu6050.c \
-            drivers/accgyro_mpu6500.c \
-            drivers/accgyro_spi_mpu6500.c \
-            drivers/barometer_bmp085.c \
-            drivers/barometer_bmp280.c \
-            drivers/barometer_ms5611.c \
-            drivers/compass_hmc5883l.c \
             drivers/light_ws2811strip.c \
-            drivers/light_ws2811strip_stm32f10x.c \
-            drivers/sonar_hcsr04.c
+            drivers/light_ws2811strip_stm32f10x.c