title: micro-ROS NuttX v0.0.2-alpha and Apps v0.0.3 release.

author: jfm92

We have launched a new version of NuttX and Apps for micro-ROS project which is base on NuttX 7.29.

This new version include the next improvements:

- Improvement of the 6lowpan stack and interoperability with Linux 6lowpan stack.

- ADC support.

- DAC support.

- And all the NuttX 7.29 improvements which you can see here: [NuttX 7.29 version](https://bitbucket.org/nuttx/nuttx/downloads/nuttx-7_29-README.txt)

You can find the repositories here:

- [NuttX](https://github.com/micro-ROS/NuttX)

- [NuttX Apps](https://github.com/micro-ROS/apps)

title: micro-ROS temperature publisher demo release

author: jfm92

This demo shows a use case in which one micro-ROS client publishes temperature value from a sensor using a micro-ROS bridge as a gateway to ROS2.

To run this demo, we will use an Olimex-STM32-E407 board with an HIH6130 temperature/humidity sensor and Raspberry Pi which works as a bridge.

The Olimex board runs a micro-ROS client, in this client, we will bring-up a node and a topic, and it will publish the measured value of the sensor.

At the same time, the Olimex board is connected by serial to a Raspberry Pi, which is running a micro-ROS agent. This micro-ROS agent will act as a gateway to the ROS2 world, publishing this topic and making it visible from any device which runs ROS2 in the same network.

The next video shows this demo running.

<video muted width="640" height="480" align="middle" controls="controls">

<source src="/download/Dashing_post_micro-ROS_temp_publisher.mp4" type="video/mp4">

</video>

**(This video doesn't work on Chrome)**

You can find all the details and how to reproduce in the next link:

[micro-ROS temperature publisher demo](https://github.com/micro-ROS/micro-ROS_temperature_publisher_demo)