• 19
      Feb - 2018

      Travel Photoset, Web designs
      1 min | 772

      #Photo Gallery: Melbourne

      Travel Photoset, Web designs | 1 min | 772

      photo gallery
      travel photoset
      This article is outdated! I am not using Pagekit anymore. Then, I am trying to port the gallery to OctoberCMS.

      As I promised some photos of Melbourne (Australia). Bangkok photos are coming this week.

      I don't know if you noticed, but I added two new repositories to GitHub:

      Both repositories are extensions for PageKit. The first one allows you to add Google Adsense ads to the posts. The second one extends the PageKit blog plugin to add categories and tags to the blog posts. I was/am quite busy these weeks, but I am writing the README files. I need to check them...

    • 27
      Dec - 2017

      4 min | 1453

      #Micropython: Merry Xmas & Happy New Year!

      MicroPython | 4 min | 1453

      happy new year
      merry Christmas

      It has been a while since my last post! Sorry, I was a little bit busy and then I was on a business trip in Melbourne for the CDC2017 and then I had a week holiday in Bangkok. I will be posting some photos on the next days!

      It's been a year now since I started this blog. It's a hard job to maintain it up-to-date but I still have fun writing and coding for this purpose! So let us start!


      The first video that I published a year ago was using the Wipy2.0 and a WS2812b led strip for some Christmas lights (click here). Now, this time I bought a WS2812b panel (100 bits or 10x10 pixels -or le...

    • 01
      Dec - 2017

      Android Things
      1 min | 617

      #ProjectDIVA: Android Things DP6.0 is here!

      Android Things | 1 min | 617

      android studio
      android things
      raspberry pi
      sensor mesh

      I will be testing the new release on this weekend!

      The release notes seem promising!

      I have also some new things with Docker and Raspberry Pi!

      Stay tuned!

    • 12
      Nov - 2017

      Hacking, MicroPython, Security
      5 min | 5443

      #Hacking: Wemos (ESP32) & Captive Portal using MicroPython

      Hacking, MicroPython, Security | 5 min | 5443

      captive portal system

      At the beginning of October I wrote a blog article called White Hacking: WeMos and SquirelCrawl!. I used the WeMos (ESP32) and the firmware provided by Hacker Arsenal to do a captive portal. As you known, a captive portal is a web page which is displayed to newly connected users before they are granted broader access to network resources [wiki]. This can be used in combination with evil portals to obtain login credentials. The firmware provided by Hacker Arsenal has multiple limitations, e.g. the web page has to be a single file, without external files, meaning that all images should be integr...

    • 03
      Nov - 2017

      2 min | 918

      #Security: Phishing with Macros once again!

      Security | 2 min | 918

      hybrid analysis
      macro virus

      And once again! Word files with Macro! But this time, I was the first one to report it to VirusTotal and Hybrid-Analysis! :)

      Virus Macro!
      Fig 1: VirusTotal report! Just only two: Fortinet sells hardware, and Qihoo-360 is in China (:S)...

      Here you have the e-mail. The sender is this time the "BOSS Last Name" (A nice improvement! :P) without address, or something like that!

      Guten Tag, Riva, Mauro 
      Bitte die gekennzeichneten Stellen ergänzen und unterschreiben, bitte mit Stempel außer das SEPA Formular. Für die Abbuchung. 
      http://docs.google.de/download/de_DE/doc/ -> with hyperlink (http://elp...
    • 01
      Nov - 2017

      5 min | 2402

      #MicroPython & #WiPy 2.0/3.0: Geolocation using WLAN

      MicroPython | 5 min | 2402

      google apis

      I was surfing the services that Google offers, I found the Geolocation API. As Google describes the API: it returns a location and accuracy radius based on information about cell towers and WiFi nodes that the mobile client can detect. As I was writing the last post using MicroPython, I thought the WiPy 2.0/3.0 could be a nice "mobile client".

      To use the API you need to get an API key from Google. As a standard user of the API, you get:

      • 2,500 free requests per day, and
      • 50 requests per second, per user.

      I thought I could play with it to test the accuracy of the geolocation.

      Python Code: ...
    • 29
      Oct - 2017

      Home Automation, MicroPython
      7 min | 6369

      #MicroPython: WeMos (ESP32) and Amazon Echo (Alexa) - Switching LED Colors!

      Home Automation, MicroPython | 7 min | 6369

      amazon echo
      home automation
      ws2812b leds

      I don’t have any Belkin WeMo system or Philips Hue light bulbs. However, I have two ESP32 running MicroPython (see my last article), and a W2812b LED strip, and I thought I should be able to say, "Echo/Alexa, turn on the kitchen light" or "Echo/Alexa, turn on the blue light" and It should work with this setup.

      And... it works as you can see in this video!

      If you are interesting in only using the code, then click here. Otherwise, you can read the complete story... ;)

      Python Code: https://github.com/lemariva/uPyEcho

      If you’re not up to speed with MicroPython, Wipy see earlier articles in...

    • 28
      Oct - 2017

      5 min | 14724

      #Tutorial: Getting started with MicroPython

      MicroPython | 5 min | 14724

      visual studio code

      Another quick tutorial, this time for MicroPython on ESP32/ESP8266. You can find all the information that I'm writing in this post in different articles on the Internet but I've not found anything that summarizes all the topics. That is why I am writting this post. I included some links at the end of each topic to extend the info. Feel free to visit them if you want more info, or write a comment I will try to respond it.

      Python Code: https://github.com/lemariva/ESP32-MicroPython

      MicroPython & Board

      What's MicroPython?

      Quoting the official micropython page results in the following


    • 05
      Oct - 2017

      Hacking, Security
      3 min | 2047

      #White Hacking: WeMos and SquirelCrawl! (update 17.10.2017)

      Hacking, Security | 3 min | 2047

      captive portal
      getting credentials
      webpage compressor

      I was surfing the web for new hacking software and hardware tools and I found the Hacker Arsenal website. This website offers "ARTILLERY FOR CYBER WARRIORS" as they said; it is basically hardware and firmware for pentester. In summary, they have actually three products especially for Wi-Fi Sniffing.

      Python Code: https://goo.gl/YuT5qm

      I found the Winx-Portable (update 17.10.2017: they are not offering this product anymore, they are offering the WiNX) on the website and I thought I have something like that. I look for the boards that I've recently bought, and I find the WeMos WiFi ESP32 D...

    • 04
      Oct - 2017

      Android Things
      1 min | 549

      #ProjectDIVA: nRF24Things working on Android Things DP5.1

      Android Things | 1 min | 549

      I've updated the code of the nRF24Things application. The application is now working on Android Things DP5.1. There is a Bug on DP5.1 related to the SPI units. You can read more on my last post here.

      I've tried to update the SensorTag-Things application but I didn't work. DP5.1 has still problems with Bluetooth. Due to the crash by debugging, I found and reported another bug to Google. Read here.

    • 04
      Oct - 2017

      Android Things
      5 min | 2360

      #Tutorial: Getting started with Android Things

      Android Things | 5 min | 2360

      As the title says, this is a getting started with Android Things. It should be my first post, but, it's better now than never. I'm posting this to summarize the steps to install Android Things on your Raspberry Pi.

      Google announced Android Things on December of 2016. It's a modified version of the Android that we all know, but for Internet of Things (IoT) devices. The architecture of the SDK is described in the following figure:

      Android Things Architecture
      Fig.: Android Things SDK ...
    • 25
      Aug - 2017

      2 min | 1180

      #Security: Phishing with Macros! (updated)

      Security | 2 min | 1180


      Yesterday I received an email from an address that should look like my boss email address. It was something like this: "Boss.Name@our-institute.uni-hannover.de nancy@hillstar.brcoxmail.com" with the subject: Rech QK - 163-DA7666 Riva, Mauro and a text saying:

      Guten Tag, Riva, Mauro
      Als Anhang erhalten Sie Ihre Rechnung. (something like "You receive your invoice as an attachment.")
      http://blackbox-es.com/Rechnung-26375407950/ (don't click this link --> read all the post!!!)
      Herzliche Grüße (Grüße: Grüße)

      As you see, there is a link to t...

    • 25
      Aug - 2017

      Android Things
      1 min | 753

      #ProjectDIVA: Android Things DP5.1

      Android Things | 1 min | 753


      Android Things DP5.1 is out! and the bugs were fixed!!! You can check the release notes here!.

      You don't need to change the config.txt for the display settings and the debugger issues were solved and it is working again (tested! - it stops at the breakpoints)!

      You can download the zipped image using the Android Things Console! Check this post for more information!

      There are some problems with my two Android Things repositories and the applications are not working as expected :( but I will be updating the GitHub repositories this weekend!

      Stay tuned! and have a nice friday!

    • 12
      Aug - 2017

      Android Things
      2 min | 1072

      #ProjectDIVA: Android Things DP5 (updated 24.08.2017)

      Android Things | 2 min | 1072

      android things
      raspberry pi
      sensor mesh


      Android Things DP5 is out and of course, new features are available.

      The most important features are:

      • Runtime Pin Configuration
      • OpenGL 2.0 Support (that means hardware acceleration on the RPI!)
      • ViewWeb is available!

      This time you need to use the Android Things Console to download the image as follows:

      1. Go to: Android Things Console and sign in using your Google credentials
      2. Click on: Create a new Product
      3. Go to: Factory Image
        • Select: Empty Bundle (if you don't have any app) and the Android Things v. OIR1.170720.015
        • Click on: Create Build Configuration
      4. Make a coffee or just wait a coupl...
    • 29
      Jul - 2017

      Android Things
      1 min | 1501

      #ProjectDIVA: SensorTag Hub using a Raspberry Pi

      Android Things | 1 min | 1501

      android things
      raspberry pi
      sensor mesh
      sensor tag
      texas instruments

      Hi again!

      Two posts in one day! Now the SensorTag CC2650 is running on Android Things. The Raspberry Pi 3 can be used as a sensor hub, and the SensorTag can be connected to it using BLE. I modified the original app and now it is working on Android Things! Minimal changes were required, especially on the files related with the user interface. Moreover, WebView is still not supported on Android Things.

      The code can be found here:

      Java  **Code:** https://goo.gl/CkKzNL


      SensorTag SensorTag CC2650 x 1


      Android Studio Android Studio > 2.2.3
      Android Things Android Things >= (0.)4.1

      As I said before, I ...