Very minimal README on how to get ROS2 on Alvik up and running.

Author: aentinger

examples/alvik_ros2_firmware/README.md

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+:floppy_disk: `alvik_ros2_firmware`
+===================================
+
+By compiling and uploading the firmware contained in this repository all Arduino [Alvik](https://store.arduino.cc/products/alvik) internal sensors and actuators can be accessed via default ROS2 topics.
+
+### How-to-build/upload
+```bash
+cd ~/Arduino/libraries
+git clone https://github.com/arduino-libraries/Arduino_Alvik && cd Arduino_Alvik
+arduino-cli core install arduino:esp32
+arduino-cli compile --fqbn arduino:esp32:nano_nora  -u -p /dev/ttyACM0
+```
+
+### How-to-run Micro-ROS local agent
+```bash
+docker run -it --rm --net=host microros/micro-ros-agent:humble udp4 --port 8888 -v6
+```