Pixracer Autopilot

The Pixracer is the first autopilot of the new FMUv4 Pixhawk generation. It has Wifi built-in, comes with upgraded sensors and more flash. The final revision of this new design will likely consolidate on a single set of sensors (either ICM or MPU, both from Invensense).

  • Integrated Wifi telemetry and boot loading through ESP8266 (config and firmware)
  • Invensense ICM-20608 Accel / Gyro (4 KHz)
  • Invensense MPU9250 Accel / Gyro / Mag (4 KHz)
  • Honeywell HMC5983 magnetometer with temperature compensation
  • Measurement Specialties MS5611 barometer
  • JST GH connectors
  • microSD
  • Futaba S.BUS and S.BUS2 / Spektrum DSM2 and DSMX / Graupner SUMD / PPM input / Yuneec ST24
  • FrSky telemetry port
  • OneShot PWM out (configurable)

Availability

Pixracer is available from AUAV (Store).

Connectors / Pinout

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

Main interfaces:

  • GPS (serial + I2C)
  • TELEM1
  • TELEM2
  • Wifi serial
  • FrSky Telemetry serial
  • Dronecode Debug connector (serial + SWD)

Pinouts

TELEM1, TELEM2+OSD ports

Pin Signal Volt
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

Pin Signal Volt
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

Pin Signal Volt
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)

Pin Signal Volt
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

Pin Signal Volt
1 (red) VCC +5V
2 (blk) CAN_H +12V
3 (blk) CAN_L +12V
4 (blk) GND GND

POWER

Pin Signal Volt
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

Pin Signal Volt
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)

Pin Signal Volt
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

Schematics

Important: The PDF file is provided for convenience. Please use only the current Altium files as reference.

Credits

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

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