Pixracer with companion computer

Hi, we’ve been working on communication between raspberry pi and the pixracer, anyone has a working configuration? We’ve been hitting on all the walls on this, haven’t got them to communicate at all. Here’re the things we’ve tried:

used firmware 1.8.1/1.8.2/1.9.0/1.6.3
SYS_companion set to 921600 (for 1.8.1/1.8.2/1.6.3)

for 1.9.0:
also tried SER_TEL2_BAUD to 921600

they always fail at after executing px4.launch and no data streaming. we are running out of walls to crash into. Anyone has ideas? Thanks in advance.

We’re successfully using the PixRacer and an Up Core, however for serial on the companion side we are using an FTDI chip (this one).

We have:
MAV_1_RATE=80000 B/s
SER_TEL2_BAUD=921600 8N1

Hope this helps!

I have this working but i cannot claim the knowledge. I purchased from gennady…

Hi! I am using the same FTDI chip and the Pixracer as well as the same MAV settings. Have you done any modifications on the 6-pin cable? When I just connect it it doesn’t work. Using screen /dev/ttyUSB0 921600 8N1 for example, there is absolutely nothing on the port.

What about using the CAN (and UAVCAN) to dialog to the companion computer instead of UART port?