Here is a circuit board that serves as an open source multi-protocol bridge for ROS 2 robots. link101 lets you use just one USB-C to see every actuator and sensor show up as a standard Linux interface. It gives you more flexibility on the actuators you can use based on what your robot needs. This gadget has a transparently and standalone monde. In the first mode, you can use your existing ROS 2 launch files and vendor drivers. Here is how the other mode works:
the RP2350 runs an on-MCU ROS 2 node via zenoh-pico over USB CDC, moving time-critical control loops off the host OS entirely, eliminating scheduling jitter. This requires writing application-specific firmware, but a project template and SDK are provided as a starting point. Same board, same connectors, two very different levels of involvement.
This board has a LSM6DSOTR 6-axis IMU. It uses 7x GPIO and 4x ADC ports for extension. It has a Raspberry Pi RP2350 microcontroller.
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