OpenMarine
Connect IMU to pyPilot through TTL over USB - Printable Version

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+--- Thread: Connect IMU to pyPilot through TTL over USB (/showthread.php?tid=3275)



Connect IMU to pyPilot through TTL over USB - pdrost - 2021-02-13

I've got a MPU9255 that communicates via TTL and not I2C (WIT-motion  WT901C TTL). I connect this IMU to my OpenPlotter RPI 3B+ via a TTL to USB and it is detected as a serial connection. 
Is i possible to get pypilot to use this IMU instead of the one I have connected through I2C, because I want to remove the IMU from electromagnetic interference and position it close to the center of motion on my boat.


RE: Connect IMU to pyPilot through TTL over USB - seandepagnier - 2021-02-14

you could also use i2c for a few meters usually, and repeaters are also possible.

Anyway, it's not a problem directly on the pi. You could use ttl or usb sensors but I don't recommend usb because of latency. So I don't have a great solution since the pi has only one hardware serial port. The pi4 has more uart.


RE: Connect IMU to pyPilot through TTL over USB - Onno - 2021-02-14

Andreas29 has made a IMU/I2C extention:
https://forum.openmarine.net/showthread.php?tid=3137