MicroPython | 1 min | 92
esp32happy new yearjupyterlightsmerry Christmasmicropythonvideoxmas
LeMaRiva|tech wishes you a Merry Christmas and a Happy New Year! To celebrate I made a video using the Xmas-lights from last year, but this time I connected the ESP32 to a Jupyter kernel to control the lights. A new Jupyter-ESP32 tutorial is coming soon. In the meantime, you can track Santa and spend time with your family!
Product Reviews | 1 min | 24
blockchainetherproduct reviewuncensorable social network
Hi there! the guys at InkDrop need some stars on GitHub! Follow the project and stayed tune! What? You don't know about InkDrop.tech?! Ok, no problem: Here you got a description!
InkDrop is an open, easy-to-use and uncensorable social network. It is an open source project and can be considered the blockchain community’s answer to the major, privacy invading platforms we depend on today.
Today’s social networks are centrally controlled & moderated and they don’t pass back the proceeds to the creators. They rely on business models that are irreconcila...
Analytics | 8 min | 652
analyticsdata sciencedockerextending docker imagesgoogle cloud platformportainer
Today, I am opening a new section on my blog, and this time it is about analytics. As you may know, I've been working in research on IIoT and analytics for the last years, but up to now my blog has only shown my hobbyist projects. I want to change the focus of my website a little bit and add something about data analytics, machine learning, Docker technology etc. Everything that I will be publishing in this section is not new. There are many tutorials and great YouTube videos that explain these topics too, but I am going to focus on building an end-to-end data science project using some of the...
hobbyistpcb boardspcb designsproduct reviewseeed fusion studio
To define the Fusion service, I take this text from its website:
Seeed Fusion Service offers one-stop prototyping services for PCB manufacture,PCB assembly and other electronic and mechanical customized services such as CNC Milling, 3D printing and PCB layout services.
I didn't have at that time a design but I had something in mind that uses communication technology. I was experimenting using LoRa technology and I thought, I could managed to design a b...
MicroPython | 2 min | 267
esp32google cloud platformmicropythonpythonsmart power outletszerynth
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
6668opened. To check that:
>>> nmap <<ip-address>> -p 6668 [...] Host is up (0.13s latency). PORT STATE SERVICE 6668/tcp open irc
MicroPython | 5 min | 1128
esp32home automationmicropythonsmart power outletstutorial
Today there is a wide range of offer for home automation devices. A lot of sensors, actors etc. can be connected to the cloud and be controlled using Google Home, Amazon Alexa, your smartphone, etc. There are a lot of companies offering low cost devices, e.g. Sonoff, Tuya, Teckin etc. Most of these solutions are based on ESP32 or ESP8266, and all of them send data to cloud solutions usually deployed on Amazon services, and the data is only accessible using the Android/iOS applications. They can be also controlled using voice commands over Google Home or Amazon Alexa devices.
Nice, but... my a...
MicroPython | 3 min | 2880
LoRa (Long Range) is a patented digital wireless data communication technology. It was developed by Cycleo of Grenoble in France and then acquired by Semtech in 2012. Semtech defines the Lora Technology "as the DNA of IoT, which connects sensors to the Cloud and enables real-time communication of data and analytics that can be utilized to enhance efficiency and productivity".
To sum up, LoRa is a wireless data communication technology that enables very-long-range transmissions (more than 10 km in rural areas) with low power consumption. It uses license-free sub-gigahertz radio frequency bands ...
batteryraspadraspberry pitable for raspberry pitouch screen
This is my first review on a product that I bought. I hope you enjoy it! Advices and tips are welcome. Please leave me them in the comment section.
Update: I changed the title of the article from "#Reviews: RasPad - an open source tablet for Raspberry Pi" to "#Reviews: RasPad - a tablet for open-source platforms like Raspberry Pi". The table is a close-source solution for open-source platforms like Raspberry Pi, Beaglebone, etc. (thanks Zykino for your advice!)
At the beginning of March I supported the Kickstarter campaign called RasPad. I pledged for the
Super Early Bird - RasPad...
MicroPython | 7 min | 1571
bmp180data accessgoogle cloud platformhome automationmicropythonpythonzerynth
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 ...
Real Time Systems | 6 min | 3410
kernel patchingraspberry pireal time systemxenomai
The website of Xenomai says the following about it Xenomai:
Xenomai brings POSIX and traditional RTOS APIs for porting time-critical applications to Linux-based platforms. When the native Linux kernel cannot meet the response time requirements of the application, Xenomai supplements it with Cobalt, a small real-time infrastructure which schedules time-critical activities independently from the main kernel logic.
Checking the list of supported hardware, the Raspberry Pi 2, 3 B(+) ARM micro (BCM2835) is included.
This tutorial is almost the same as the tutorial for Preempt-RT patching, but in ...
Real Time Systems | 8 min | 6150
kernel patchingpreempt-rtraspberry pireal time system
The Preempt-RT tutorial article is the most visited post on my blog. Therefore, I decided to update the tutorial to make it cleaner, and to introduce some other possible modifications and tips for solving problems.
Preempt-RT is a popular patch for the Linux kernel to transform Linux into such a real-time operating system. There is another option to get this done, and that's Xenomai (tutorial and performance tests here).
Tiejun Chen, the main responsible for the official Raspberry-Pi-RT branch, has published a video about Preempt-RT here. It includes tips, results and tests.
Getting the Sour...
Android Things | 2 min | 125
android thingsarduino mini pronrf24l01raspberry pisensor mesh
This article extends the node tree of ProjectDiva to include an Arduino Pro Mini.
This article explains how to connect a Arduino Pro Mini to the nRF24Things application (Android Things). The code allows sending and receiving messages between the nodes. It uses the well-known nRF24 libraries to create a sensor mesh, where the node 0 (in this case a Raspberry Pi running the Android Things application) actuates as a "DHCP" server and assigns the node addresses in the mesh.
Hardware & Software
Arduino Mini Pro (3.3V) x 1 NRF24L01+ x1 FTDI-1232 x1
General | 1 min | 80
deceptionfraudgoogle aiy vision kitraspberry pitarget manhattan
Unboxing Google AIY Vision Kit picked up at Target Manhattan Herald Square -New York!- (Target.com) . Also for the fans of Google AIY Voice Kit keep watching! If anyone made the same experience, please advise!
@Target: It will be great to hear from you!
@Google: Congratulations on your choice of business partner!
If you are going to buy something in this shop, please double check the package and the contain before you leave the shop!
Update 9.07.2018: I managed to get the money back after a 45-minute chat session.
MicroPython | 2 min | 409
9gcamera stabilization.imumicro serversmicropythonmpu6050wipy
To continue the series of posts "connecting sensors to MicroPython", this article is about the MPU6050 (you can use also the MPU9255, I am still waiting for the Chinese sensor package) and the WiPy 3.0. Combining the IMU sensor with the WiPy and two micro servos 9g, it is possible to stabilize a camera (tilt/rotate).
To calculate the compensation needed for the stabilisation, I added the
ulinalglibraries to the project to make matrix multiplication and quaternion to Euler conversion. The
ahrslibrary from Madgwick fusions the data of the accelerometer, gyroscope (and m...
General | 1 min | 106
I got you! Please stop trying to hack my website! It's just a small blog! You are ruining my stats! ;)
Sorry to the other users!, but the last two weeks, someone was using the cloud system ofOnline SAS to try to hack my website. Yes, you heard that right! Someone is trying to hack this small blog! and I can tell you: That's illegal! ;) In the terms and conditions of Online SAS that is NOT allowed! ;P
Are Paris IP-addresses going to be the next Nigeria IP-addresses? abuseipdb.com has a lot of Paris IP-addresses declared as risky!
Leave a comment, if you have more info, and if you are the guy tr...