ardupilot/libraries/AP_HAL_ChibiOS/hwdef/PixSurveyA1-IND

PixSurveyA1-IND Flight Controller

The PixSurveyA1-IND flight controller is an upgrade to PixSurveyA1, with better sensors and a better power solution; added a custom serial port. It is sold by a range of resellers listed on the makeflyeasy(http://www.makeflyeasy.com)

Features

• STM32F427VIT6 and STM32F103C8T6 microcontroller

• Three IMUs, two ICM42688-P(SPI), one ICM40605(SPI)

• internal heater for IMUs temperature control

• internal Soft Rubber Damping Column isolation for All internal IMUs

• Two barometers, MS5611(SPI) x2

• builtin IST8310 magnetometer(internal I2C)

• builtin RAMTRON(SPI)

• microSD card slot(SPI)

• 5 UARTs

• USB(Type-C)

• PPM & S.Bus input

• 14 PWM outputs

• tow I2C ports and two FDCAN ports

• one S.Bus output

• External Buzzer

• two voltage & current monitoring

• servo rail BEC independent power input for servos

• external safety Switch

• 12V Power Output

Pinout

UART Mapping

• SERIAL0 -> console (primary mavlink, usually USB)
• SERIAL1 -> USART2 (telem1, DMA-enabled)
• SERIAL2 -> USART3 (Telem2, DMA-enabled)
• SERIAL3 -> UART4 (GPS1)
• SERIAL4 -> UART8 (GPS2, DMA-enabled)
• SERIAL5 -> UART7 (USER)

Connector pin assignments

TELEM1, TELEM2 ports

Pin	Signal	Volt
1	VCC	+5V
2	TX (OUT)	+3.3V
3	RX (IN)	+3.3V
4	GND	GND

I2C1, I2C2 ports

PIN	SIGNAL	VOLT
1	VCC	+5V
2	SCL	+3.3V
3	SDA	+3.3V
4	GND	GND

CAN1, CAN2 ports

PIN	SIGNAL	VOLT
1	VCC	+5V
2	CAN_H	+12V
3	CAN_L	+12V
4	GND	GND

Safety port

PIN	SIGNAL	VOLT
1	VCC	+3.3V
2	LED	+3.3V
3	SAFKEY	+3.3V

GPS1/I2C1, GPS2/I2C2 ports

PIN	SIGNAL	VOLT
1	VCC	+5V
2	TX	+3.3V
3	RX	+3.3V
4	SCL	+3.3V
5	SDA	+3.3V
6	GND	GND

Serial5 port

Pin	Signal	Volt
1	VCC	+5V
2	TX (OUT)	+3.3V
3	RX (IN)	+3.3V
4	GND	GND

Power1, Power2 ports

PIN	SIGNAL	VOLT
1	VCC	+5V
2	VCC	+5V
3	CURRENT	+3.3V
4	VOLTAGE	+3.3V
5	GND	GND
6	GND	GND

12V Power Output port

Pin	Signal	Volt
1	GND	GND
2	VCC	+12V
3	GND	GND

S.BUS Output port

Pin	Signal	Volt
1	SBUS.out	+3.3V
2	NC	NC
3	GND	GND

RC Input

All compatible RC protocols can be decoded by attaching the Receiver's output to the SBUS input pin next to the Servo/Output VCC input connector. Note that some protocols such as CRSF or FPort including telemetry, require connection to, and setup of, one of the UARTs instead of this pin.

Compass

The PixSurveyA1-IND has a built-in compass. Due to potential interference, the autopilot is usually used with an external I2C compass as part of a GPS/Compass combination.

PWM Output

The PixSurveyA1-IND supports up to 14 PWM outputs. First first 8 outputs (labelled 1 to 8) are controlled by a dedicated STM32F103 IO controller. These 8 outputs support all PWM output formats, but not DShot.

The remaining 6 outputs (labelled 9 to 14) are the "auxiliary" outputs. These are directly attached to the STM32F427 and support all PWM protocols as well as DShot.

The 8 main PWM outputs are in 3 groups:

• PWM 1 and 2 in group1
• PWM 3 and 4 in group2
• PWM 5, 6, 7 and 8 in group3

The 6 auxiliary PWM outputs are in 2 groups:

• PWM 1, 2, 3 and 4 in group1
• PWM 5 and 6 in group2

Channels within the same group need to use the same output rate. If any channel in a group uses DShot then all channels in the group need to use DShot.

Battery Monitor Settings

These should already be set by default. However, if lost or changed:

Enable Battery monitor with these parameter settings :

:ref:BATT_MONITOR<BATT_MONITOR> =4

Then reboot.

:ref:BATT_VOLT_PIN<BATT_VOLT_PIN> 2

:ref:BATT_CURR_PIN<BATT_CURR_PIN> 3

:ref:BATT_VOLT_MULT<BATT_VOLT_MULT> 18.0

:ref:BATT_AMP_PERVLT<BATT_AMP_PERVLT> 24.0

:ref:BATT2_VOLT_PIN<BATT2_VOLT_PIN> 14

:ref:BATT2_CURR_PIN<BATT2_CURR_PIN> 13

:ref:BATT2_VOLT_MULT<BATT2_VOLT_MULT> 18.0

:ref:BATT2_AMP_PERVLT<BATT2_AMP_PERVLT> 24.0

DroneCAN capability

There are 2 CAN ports that allow connecting two independent CAN bus outputs. Each of these can have multiple CAN peripheral devices connected.

Where to Buy

makeflyeasy <http://www.makeflyeasy.com>_

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