• Pixracer
    • 主要特性
    • Where to Buy
    • Kit
    • Wifi (no USB required)
    • Wiring Diagrams
    • 连接器
    • 针脚定义
    • Schematics
    • 编译固件
    • 鸣谢

    Pixracer

    The Pixhawk® XRacer board family is optimized for small racing quads and planes. In contrast to Pixfalcon and Pixhawk it has in-built Wifi, new sensors, convenient full servo headers, CAN and supports 2M flash.

    mRo Pixracer - 图1

    主要特性

    • Main System-on-Chip: STM32F427VIT6 rev.3
      • CPU: 180 MHz ARM Cortex® M4 with single-precision FPU
      • RAM: 256 KB SRAM (L1)
    • Standard FPV form factor: 36x36 mm with standard 30.5 mm hole pattern
    • Invensense® ICM-20608 Accel / Gyro (4 KHz) / MPU9250 Accel / Gyro / Mag (4 KHz)
    • HMC5983 magnetometer with temperature compensation
    • Measurement Specialties MS5611 barometer
    • JST GH connectors
    • microSD (logging)
    • Futaba S.BUS and S.BUS2 / Spektrum DSM2 and DSMX / Graupner SUMD / PPM input / Yuneec ST24
    • FrSky® telemetry port
    • OneShot PWM out (configurable)
    • Optional: Safety switch and buzzer

    Where to Buy

    Pixracer is available from the mRobotics.io.

    Accessories include:

    • Digital airspeed sensor
    • HKPilot Transceiver Telemetry Radio Set V2 (915Mhz - US Telemetry)
    • Hobbyking® OSD + EU Telemetry (433 MHz)

    Kit

    The Pixracer is designed to use a separate avionics power supply. This is necessary to avoid current surges from motors or ESCs to flow back to the flight controller and disturb its delicate sensors.

    • Power module (with voltage and current sensing)
    • I2C splitter (supporting AUAV, Hobbyking and 3DR® peripherals)
    • Cable kit for all common peripherals

    Wifi (no USB required)

    One of the main features of the board is its ability to use Wifi for flashing new firmware, system setup and in-flight telemetry. This frees it of the need of any desktop system.

    Todo Setup and telemetry are already available, firmware upgrade is already supported by the default bootloader but not yet enabled

    • ESP8266 Wifi
    • Custom ESP8266 MAVLink firmware

    Wiring Diagrams

    Grau setup pixracer top

    Grau setup pixracer bottom

    setup pixracer GPS

    Grau b Pixracer FrSkyS.Port Connection

    Grau ACSP4 2 roh

    Grau ACSP5 roh

    连接器

    All connectors follow the Dronecode connector standard. Unless noted otherwise all connectors are JST GH.

    针脚定义

    TELEM1, TELEM2+OSD ports

    针脚 信号 电压
    1 (red) VCC +5V
    2 (blk) TX (OUT) +3.3V
    3 (blk) RX (IN) +3.3V
    4 (blk) CTS (IN) +3.3V
    5 (blk) RTS (OUT) +3.3V
    6 (blk) GND GND

    GPS port

    针脚 信号 电压
    1 (red) VCC +5V
    2 (blk) TX (OUT) +3.3V
    3 (blk) RX (IN) +3.3V
    4 (blk) I2C1 SCL +3.3V
    5 (blk) I2C1 SDA +3.3V
    6 (blk) GND GND

    FrSky Telemetry / SERIAL4

    针脚 信号 电压
    1 (red) VCC +5V
    2 (blk) TX (OUT) +3.3V
    3 (blk) RX (IN) +3.3V
    4 (blk) GND GND

    RC Input (accepts PPM / S.BUS / Spektrum / SUMD / ST24)

    针脚 信号 电压
    1 (red) VCC +5V
    2 (blk) RC IN +3.3V
    3 (blk) RSSI IN +3.3V
    4 (blk) VDD 3V3 +3.3V
    5 (blk) GND GND

    CAN

    针脚 信号 电压
    1 (red) VCC +5V
    2 (blk) CAN_H +12V
    3 (blk) CAN_L +12V
    4 (blk) GND GND

    POWER

    针脚 信号 电压
    1 (red) VCC +5V
    2 (blk) VCC +5V
    3 (blk) CURRENT +3.3V
    4 (blk) VOLTAGE +3.3V
    5 (blk) GND GND
    6 (blk) GND GND

    SWITCH

    针脚 信号 电压
    1 (red) SAFETY GND
    2 (blk) !IO_LED_SAFETY GND
    3 (blk) VCC +3.3V
    4 (blk) BUZZER- -
    5 (blk) BUZZER+ -

    Dronecode debug port (JST SM06B connector)

    针脚 信号 电压
    1 (red) VCC TARGET SHIFT +3.3V
    2 (blk) CONSOLE TX (OUT) +3.3V
    3 (blk) CONSOLE RX (IN) +3.3V
    4 (blk) SWDIO +3.3V
    5 (blk) SWCLK +3.3V
    6 (blk) GND GND

    Pixracer top pinouts

    Pixracer bottom pinouts

    Pixracer esp

    Schematics

    The reference is provided as: Altium Design Files

    The following PDF files are provided for convenience only:

    • pixracer-rc12-12-06-2015-1330.pdf
    • pixracer-r14.pdf - R14 or RC14 is printed next to the SDCard socket

    编译固件

    Tip大多数用户将不需要建立此固件! 它是预构建的, 并在连接适当的硬件时由 QGroundControl 自动安装。

    为此目标 编译 PX4：

    1. make px4_fmu-v4_default

    鸣谢

    This design was created by Nick Arsov and Phillip Kocmoud and architected by Lorenz Meier, David Sidrane and Leonard Hall.