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March 22, 2016August 7, 2016 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

Getting Started with Wemos D1 mini ESP8266 Board, DHT & Relay Shields

Wemos D1 mini is an ESP8266 board that’s interesting thanks to its size, its low price ($4), micro USB power, its shields, and a documentation that looks fairly good. The board can be programmed with Arduino or Lua, and supports both serial and OTA programming. I’ve decided to give it a try and bought the board together with two temperature shields, a relay shield, and micro SD shield. I got all for $ 14.00 from Wemos Aliexpress shop, and it took about one month for delivery. I can also see they’ve recently released a new OLED shield selling for about $5. All shields were shipped inside their own anti-static bags. The pins are clearly marked on both side of the board and the shields. One side of the board features ESP8266 module. and the other side has CH340 serial to USB chip, and the reset button. The provided headers make […]

March 21, 2016March 21, 2016 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Decode or Generate QR Codes in Ubuntu with QtQR and zbar-tools

Sometimes I’ve found myself having to decode a QR code on my computer, and usually I’d just get my Android smartphone, use a QR code app to decode it, and send the results to my computer by email. It works, but wouldn’t it be better to simply do this straight from my computer instead? After a few minutes searching, I eventually found out QtQR graphical utility that can both generate and decode QR codes. In Ubuntu and Debian, you can install it as follows:

sudo apt-get install qtqr

1	sudo apt-get install qtqr

You can create a QR code with a given pixel size and level of error correction for text, URL, bookmark, email, phone number, SMS/MMS, WiFi network, and so on, and then use the Save QRCode button to save the resulting picture. If instead you simply want to decode a QR code from an image or your webcam use the Decode button, and the tool will […]

March 16, 2016May 5, 2016 by Jean-Luc Aufranc (CNXSoft) - 34 Comments

Orange Pi One Board Quick Start Guide with Armbian Debian based Linux Distribution

Orange Pi One board is the most cost-effective development board available on the market today, so I decided to purchase one sample on Aliexpress to try out the firmware, which has not always been perfect simply because Shenzhen Xunlong focuses on hardware design and manufacturing, and spends little time on software development to keep costs low, so the latter mostly relies on the community. Recently, armbian has become popular operating systems for Linux ARM platform in recent months, so I’ve decided to write a getting started guide for Orange Pi One using a Debian Desktop image released by armbian community. Orange Pi One Unboxing But let’s start by checking out what I received. The Orange Pi One board is kept in an anti-static bag, and comes with a Regulatory Compliance and Safety Information sheet, but no guide, as instead the company simply asks users to visit www.orangepi.org to access information […]

March 8, 2016March 21, 2016 by Jean-Luc Aufranc (CNXSoft) - 20 Comments

How to Resize Partitions and Update Firmware in MXQ-4K TV Box (Rockchip RK3229)

Since I’ve received MXQ-4K Android TV box yesterday, I have started to play with it, and so far I can’t say I’m impressed, as while the device automatically detected the maximum resolution (3840×2160 @ 60 Hz) for my television, I could not play any of my 4K samples smoothly with either the pre-installed Kodi 15.2, Video and Video Player apps, there’s no power off mode (only standby), and the “internal partition” is only 0.96GB large which can quickly become an issue if you plan on installing several apps. Since GeekBuying has released the stock firmware, I decided to try to adapt the method to resize the partitions for GeekBox (RK3368) to MXQ-4K. Rockchip RK3229 Firmware Modding I’ve used a computer running Ubuntu 14.04, and assume you have most tools pre-installed. The first step is to download the firmware (MXQ-4K_ota_ok_20160127.img update.img), and install the tools to extract it :

git clone https://github.com/geekboxzone/utils
cd utils/rockdev
mv MXQ-4K_ota_ok_20160127.img update.img
./unpack.sh

git clone https://github.com/geekboxzone/utils

cd utils/rockdev

mv MXQ-4K_ota_ok_20160127.img update.img

./unpack.sh

The […]

February 22, 2016 by Jean-Luc Aufranc (CNXSoft) - 119 Comments

How to Configure DVB-S2 and DVB-T2 Tuners in K1 Plus Android DTV Receiver

I have previously reviewed VideoStrong K1 Plus Android TV box, but the company also has another model with the exact same name “K1 Plus” that includes a combo DVB-S2 & DVB-T2 tuner. That’s rather confusing, but nevertheless, since I now have the tuner version of the device, I’ve installed the latest firmware, started to play with it, and today I’ll explain how to configure DTV app for both satellite and terrestrial digital TV reception. Hardware Setup and DTV App The first step is to connect both your satellite dish and indoor or outdoor TV antenna to the device, as well as all necesarry cables, and possibly a USB hard drive if you want to use PVR function. Now go to the list of apps start DTV app, or press the DTV button on the remote control. Each time the app starts you’ll be asked to select DVBT2 or DVBS2, and […]

February 13, 2016February 19, 2016 by Jean-Luc Aufranc (CNXSoft) - 30 Comments

Received Your Orange Pi One Board? You’ll Need to Tweak Your FEX File / script.bin

[Update: I’ve been informed that for some unknown reasons the voltage regulator outputs 1.3 and 1.5V instead of 1.1 and 1.3V on Orange Pi One with the settings and FEX file below, which could lead to overheating, and possibly damage the board under heavy load. A workaround is available here] [Update2: And the temperatures reported by the kernel are wrong (too low), so it’s better not to use the higher voltage at all. More details and tests @ http://forum.armbian.com/index.php/topic/617-wip-support-for-the-upcoming-orange-pi-one/page-4#entry5261] Orange Pi One is arguably the cheapest ARM Linux development board with networking available today for $9.99 plus shipping. It is very similar to Orange Pi PC with an Allwinner H3 quad core Cortex A7 processor, Ethernet, and HDMI, but has less memory as it comes with 512MB RAM instead of 1GB, and comes with a few less features too. The bad news is that Shenzhen Xunlong did not release any […]

February 4, 2016November 18, 2023 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

How to Check CPU Throttling in Windows 10 or Windows 11

Recent processors all have the ability to adjust the operating frequency to either decrease power consumption or make sure the processor does not overheat. That’s why for example Intel processors have a maximum junction temperature (Tj max) so that if this temperature is reached the processor can slow down (throttle) to cool things off and avoid damaging itself. That also explains why computers with the same processor, storage, and memory may have greatly different performance under load depending on their thermal design. I’m currently testing a fanless mini PC with an Intel Celeron N3150 Braswell processor, and yesterday I noticed the frequency would be stuck at 0.22 GHZ (yes, that’s 220 MHz) at all times, even when starting the web browser and loading long web pages. It was very slow, and I had a few “windows not responding” in the process. I checked the metal box temperature with an IR […]

January 20, 2016July 31, 2020 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Getting Started with NavSpark mini GPS Module

I noticed NavSpark mini GPS module a couple of weeks ago, and since it was free, not including $10 for shipping, I went ahead and ordered. Since the freebie got popular, SkyTraq took some time to ship it, and when they did they provide a “not trackable” tracking number, which I’m not sure what that means as I could track the parcel from Taiwan to Thailand using 17track website without issues. The packages included NavSpark mini and a USB to TTL module as described, so I insert both and connect VCC, GND, and UART as shown on the pictures on the product page. I also connected the GPS antenna from LinkIt ONE development kit to the uFL connector on NavSpark mini, as well as a micro USB to USB cable to my computer. If you don’t have such antenna, you’ll need to add the $9 GPS/GLONASS antenna on NavSpark website […]