The new Pixracer (formerly called XRacer) is available now and its going to be fully supported by the Arducopter and PX4 community. Its a genuine open source project.
Its design was created by Nick Arsov and Phillip Kocmoud and architected by Lorenz Meier, David Sidrane and Leonard Hall.
This is not just another small Pixhawk knock off or derivate, the Pixracer is the first autopilot of the new FMUv4 Pixhawk generation, coming with an upgraded Invensense Sensor generation. (bye bye tricky LSM) and a plug in Wifi board. A real upgrade compared to former versions.
The JST GH connectors according to the new Dronecode connector standards: https://wiki.dronecode.org/workgroup/connectors/start
Pixracer specs :
MCU – STM32F427VIT6 rev.3
FRAM – FM25V02-G
LDO Ultra low noise LDOs for sensors and FMU
MPU9250 , ICM20608 , baro MS5611, mag HMC5983
Connectors – GPS+I2C, RC-IN, PPM-IN, RSSI, SBus-IN, Spektrum-IN, USART3 ( TxD, RxD, CTS, RTS ), USART2 ( TxD, RxD, CTS, RTS ), FRSky-IN, FRSky-OUT, CAN, USART8 ( TxD, RxD ), ESP8266 ( full set ), SERVO1-SERVO6, USART7 ( TxD, RxD ), JTAG ( SWDIO, SWCLK ), POWER-BRICK ( VDD, Voltage, Current, GND ), BUZZER-LED_BUTTON
MicroSD card reader
WiFi ESP8266 802.11bgn ( optional )
Dimensions – 36 x 36mm with 30.5 x 30.5mm hole grid with 3.2mm holes
JST GH series connectors for easy and robust peripheral connections
Full set of professional flexible cables for almost any peripheral module included.
Power supply – 5-5.5VDC from USB or PowerBrick connector.
1. PX4 Stack discussions https://groups.google.com/forum/#!forum/px4users
2. Arducopter discussions http://diydrones.com/
1. DOCX format: Pixracer-V1-user-manual-EN
2. PDF format: Pixracer-V1-user-manual-EN
3. Cable harnesses in XLS format: PixRacer_Cable_Harnesses
Pixracer pages by pixhawk.org