I have a Nexus 5X or I had a working Nexus 5X, and last week it turned black and has finally bootlooped! I bought it from Google Store, so I decided to contact Google. I knew that the warranty was expired on Dec. 2017 (Google repeated it), but this is a common problem of the Nexus 5X, so I thought that maybe I have a chance! But NO! The support was nice, but the solution was to contact LG. A death path! Meaning: No goodwill from Google! Nothing! I contacted LG, and the solution was to send the phone to this address:
DUX Logistics & Tech Services GmbH, Neben dem Mühlweg 20, 65474 Bischofsheim ...I am really happy to inform you that I will be at the Hannover Fair 2018. The Institute of Mechatronic Systems will be represented by our research group "Integrated Systems and Machine Learning" in the Hall 2 on Stand B08 and we will be presenting solutions for the advancing digitization of industrial production.
The Hannover Fair 2018 takes place between Apr 23, 2018 and Apr 27, 2018 in Hannover.
For more info, click here:
You find the map below:
I am writing this post as a tutorial or a 'keep' note for myself, but I think it could be interesting for a lot of people. At work I'm using a Latitude Dell Laptop with dual boot (Ubuntu 16.04 LTS and Windows 10). The laptop has a SD card reader. Usually I work under Ubuntu while I am programming, and the SD card reader support is broken! But typing the following on a terminal, makes it works again:
sudo rmmod sdhci_pci sdhci_acpi sdhci sudo modprobe sdhci debug_quirks2="0x10000" sudo modprobe sdhci_pci sdhci_acpi sdhci
It seems to be a problem since Linux kernel version 4.1.8. A bug report he...
#Raspberry Pi: The N-queens Problem (benchmark) Preempt-RT vs. Standard Kernel
Real Time Systems | 5 min | 14125
N-Queens Problem: A Benchmarking Solver for Raspberry Pi
The N-Queens Problem/Puzzle is a well-known problem that consists of placing N chess queens on an N × N chessboard so that no two queens attack each other. For example, one possible solution to the N-queens problem for N = 4 is the following:
Fig. 1: N-queens problem example (N = 4).
Source: Google Optimization ToolsAs you can see, there aren't two queens on the same row, column or diagonal. Usually t...
#Rapberry Pi: Preempt-RT Kernel Performance on Rasbperry PI 3 Model B+
Real Time Systems | 3 min | 11778
The Raspberry Pi 3 Model B+ (Fig. 1) is now on sale and I bought one two weeks ago. The main modifications are the followings:
- A 1.4GHz 64-bit quad-core ARM Cortex-A53 CPU
- Dual-band 802.11ac wireless LAN and Bluetooth 4.2
- Faster Ethernet (Gigabit Ethernet over USB 2.0)
- Power-over-Ethernet support (with separate PoE HAT)
- Improved PXE network and USB mass-storage booting
- Improved thermal management
Fig. 1: Raspberry Pi 3 Model B+ The Raspberry Pi uses now the LAN2515 chip from Microchip instead of the LAN9514 for Ethernet and the USB Ports.
If you are looking for some Benchmarkin...
The forked rpi-4.14.y-rt repo by TiejunChina is now a branch under the official Raspberry Pi repo. That means you need to type the following to clone the Preempt-RT patched Kernel
~/rpi-kernel$ git clone https://github.com/raspberrypi/linux.git ~/rpi-kernel$ cd linux ~/rpi-kernel/linux/ git checkout rpi-4.14.y-rt
Then, you can follow the tutorial from here.
Today I patched the kernel of a Raspberry Pi Zero W with Preempt-RT. I used the repo TiejunChina.
Update 18.03.2018: The official Preempt-RT patched Rasbian repo is here. ##~/rpi-kernel$ git clone https://github.com/TiejunChina/linux.git # update 18.03.2018: old repository## ~/rpi-kernel$ git clone https://github.com/raspberrypi/linux.git # update 18.03.2018: new repository ~/rpi-kernel$ cd linux ~/rpi-kernel/linux$ git checkout rpi-4.14.y-rt # today the kernel version is 4.14.22 # with rt17 resulting in 4.14.22-rt17+
You can find a complet...
This article is outdated! I am not using Pagekit anymore. Then, I am trying to port the gallery to OctoberCMS. I've been working with web development this weekend. I hope you didn't have to wait because of a maintenance dialog or a 500 error due to the updates! I updated three things on the blog:
I forked the first two repositories and modified them. The last one is a package that I designed to manage the Adsense Ads if you use Pagekit as CMS.
Blog Extension
I added the visitor counter for the blog post. You can see the eye over the t...
While I was reading my getting stated tutorial about MicroPython again, I noticed that I've forgotten to tell something about dependencies or packages.
Here is possible to find some MicroPython packages. On the WeMos (ESP32) or the ESP8266, it is possible to install these packages using the
upip
package manager. The WiPy doesn't have the package.To download the new packages, you need to connect the board to the Internet. I take the WeMos as example and typing the following, you can connect the board to your WiFi router:
ssid_ = <your_ssid> wp2_pass = <your wpa2 password> import network sta_...
As I promised some photos of Bangkok (Thailand). Enjoy!
This article is outdated! I am not using Pagekit anymore. Then, I am trying to port the gallery to OctoberCMS. The last week I was working on a real-time application (with a 1 ms sample time) that runs on an ARMv8 Cortex-A53 (Raspberry Pi 3 Model B based board) and I was wondering the differences between latencies on the standard and the Real-Time (RT) Linux kernel. I had some problems with the standard kernel version, then I thought I could analyze the latencies of both kernels, and make some conclusions. Many test are available but with older kernel versions. The tests were perfo...
You can still read this article, but a new tutorial is available here: There are a lot of tutorials for Raspberry Pi kernel patching using Preempt-RT, but I needed about 15 hours to get it working! I hate Kernel patching! and I have to say, that's not my first time. I have a system working with Ubuntu, RTAI and an Ethercat master. I patched the system more than once. But it is/was always a new thing! and It costs a lot of tim...
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 ...
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!
Intro
The first video that I published a year ago was using the Wipy2.0 and a WS2812b led strip...
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!
This article is outdated! I wrote the following new articles:
- #ProjectDIVA: Android Things 0.8.1 getting started!
- #ProjectDIVA: Android Things v1.0!Stay tuned!
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