• 03
      Sep - 2019

      Cloud Platforms | 7 min | 3806

      #GCP: Running OpenProject almost FREE

      Cloud Platforms | 7 min | 3806


      docker
      docker-compose
      google cloud platform
      management software
      nginx
      openproject

      The last days, I was looking for an online project management tool with bug tracking system. The best platform that I know is Jira from Atlassian. Jira offers a bug tracking and agile project management, however, it costs between $8.33 and $10 (annual/monthly payment) for the standard version with under 10 accounts. We use Jira in Finealyze and I am very happy with it, but I was looking for a free alternative for myself. Then, I found OpenProject, which describes itself as "the leading open source project management software".

      OpenProject is offered in three different ways: Community, Cloud an...

    • 27
      Oct - 2018

      Cloud Platforms, Home Automation, MicroPython | 2 min | 1231

      #Zerynth: ESP32 & Google IoT Core - Part 2: Getting data from Smart Power Outlets

      Cloud Platforms, Home Automation, MicroPython | 2 min | 1231


      esp32
      google cloud platform
      micropython
      python
      smart power outlets
      zerynth

      This part 2 of the tutorial will allow you to get data from the smart power outlets and send it to the Google Cloud Platform (GCP) throught the Google IoT Core and using an ESP32 programmed with Zerynth (Python). This data is not usually available to the user (directly, you need to use the power outlet application), and it is sent to the company servers.

      If you want to check, if your power outlets are compatible for this tutorial, they should have the port 6668 opened. To check that:

      >>> nmap <<ip-address>> -p 6668
      [...]
      Host is up (0.13s latency).
      
      PORT     STATE SERVICE
      6668/tcp open  irc
      
      ...
    • 17
      Sep - 2018

      Cloud Platforms, MicroPython | 7 min | 3669

      #Zerynth: ESP32 & Google IoT Core - Part 1: Sending data to the Cloud

      Cloud Platforms, MicroPython | 7 min | 3669


      bmp180
      data access
      google cloud platform
      home automation
      micropython
      python
      zerynth

      There are lot of tutorials about connecting the ESP32 to a cloud service, but I planned to connect these boards using MicroPython directly to the cloud. That means, I didn't want to use a hardware or software bridge. I wanted to use the Google IoT Core, but MicroPython doesn't support JSON Web Token (JWT), which is needed for the device authentication. I tried to write the library myself, but it didn't work, because of the needed dependencies and the small memory available on the ESP modules. But, I found Zerynth. Zerynth supports JWT and using it, it is possible to connect the ESP32 directly ...