diff --git a/libraries/AP_HAL_ChibiOS/hwdef/mini-pix/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/mini-pix/hwdef.dat
new file mode 100644
index 0000000000..5d9d5f65c9
--- /dev/null
+++ b/libraries/AP_HAL_ChibiOS/hwdef/mini-pix/hwdef.dat
@@ -0,0 +1,109 @@
+# hw definition file for processing by chibios_pins.py
+# for mini-pix hardware from RadioLink
+
+# MCU class and specific type
+MCU STM32F4xx STM32F405xx
+
+RAM_SIZE_KB 128
+CCM_RAM_SIZE_KB 64
+
+# board ID for firmware load
+APJ_BOARD_ID 3
+
+# crystal frequency
+OSCILLATOR_HZ 24000000
+
+FLASH_SIZE_KB 1024
+
+# board voltage
+STM32_VDD 330U
+
+STDOUT_SERIAL SD1
+STDOUT_BAUDRATE 115200
+
+# USB setup
+USB_VENDOR 0x0483 # ST
+USB_PRODUCT 0x5740
+USB_STRING_MANUFACTURER "ArduPilot"
+USB_STRING_PRODUCT "ChibiOS/RT Virtual COM Port"
+USB_STRING_SERIAL  "100"
+
+# only one I2C bus
+I2C_ORDER I2C1
+
+# order of UARTs (and USB)
+UART_ORDER OTG1 USART1
+
+# PB10 USART3_TX USART3
+
+# PB14 TIM8_CH2 TIM8 RCIN PULLUP LOW DMA_CH0
+
+PC3 VDD_5V_SENS ADC1
+
+PC2 BATT_VOLTAGE_SENS ADC1 SCALE(1)
+PC1 BATT_CURRENT_SENS ADC1 SCALE(1)
+
+# spi bus for IMU
+PA5 SPI1_SCK SPI1
+PA6 SPI1_MISO SPI1
+PA7 SPI1_MOSI SPI1
+
+PA9 USART1_TX USART1
+PA10 USART1_RX USART1
+
+# PA10 IO-debug-console
+PA11 OTG_FS_DM OTG1
+PA12 OTG_FS_DP OTG1
+PA13 JTMS-SWDIO SWD
+PA14 JTCK-SWCLK SWD
+
+PB8 I2C1_SCL I2C1
+PB9 I2C1_SDA I2C1
+
+PB5 LED_BLUE OUTPUT GPIO(0)
+PB6 LED_YELLOW OUTPUT GPIO(1)
+
+PA4 MPU_CS CS
+
+PC6 TIM8_CH1 TIM8 PWM(1)
+PC7 TIM8_CH2 TIM8 PWM(2)
+PC8 TIM8_CH3 TIM8 PWM(3)
+PC9 TIM8_CH4 TIM8 PWM(4)
+
+define HAL_STORAGE_SIZE 8192
+define STORAGE_FLASH_PAGE 11
+
+FLASH_SIZE_KB 1024
+
+# reserve 16k for bootloader
+FLASH_RESERVE_START_KB 16
+
+# use empty storage for now
+define HAL_USE_EMPTY_STORAGE
+
+define HAL_INS_DEFAULT HAL_INS_MPU60XX_SPI
+
+define HAL_COMPASS_DEFAULT HAL_COMPASS_HMC5843
+define HAL_COMPASS_HMC5843_I2C_BUS 1
+define HAL_COMPASS_HMC5843_I2C_ADDR 0x1E
+
+define HAL_BARO_DEFAULT HAL_BARO_MS5611_I2C
+define HAL_BARO_MS5611_I2C_BUS 0
+define HAL_BARO_MS5611_I2C_ADDR 0x77
+
+# SPI devices
+# mpu6500 on SPI
+SPIDEV mpu6000 SPI1 DEVID1 MPU_CS MODE3 1*MHZ 8*MHZ 
+#SPIDEV ms5611  SPI1 DEVID3 BARO_CS MODE3 20*MHZ 20*MHZ
+# hmc5843 on spi?
+#bus_type:I2C(1)  bus:1 address:13 devtype:13(0xd) DEVTYPE_QMC5883L
+#bus_type:I2C(1)  bus:0 address:13 devtype:13(0xd) DEVTYPE_QMC5883L
+
+
+define OPTFLOW DISABLED
+
+define STM32_USB_OTG1_IRQ_PRIORITY         14
+define STM32_USB_OTG1_RX_FIFO_SIZE         1024
+define STM32_USB_OTG_THREAD_PRIO           40
+define STM32_USB_OTG_THREAD_STACK_SIZE     256
+define STM32_USB_OTGFIFO_FILL_BASEPRI      0