Using USB123 USBee AX Pro $5 USB Logic Analyzer with PulseView in Linux

I recently wrote about an ultra low cost USB logic analyzer called USB123 USBee AX Pro, which I bought for $9.58 on DX, but I was later informed it also goes for $5.44 on Aliexpress including free shipping to most countries, and a few dollars extra for shipping to some other countries. Nevertheless, I’ve now received it, and instead of testing it with a closed source (and cracked) Windows software, I installed and ran PulseView open source graphical interface for sigrok, which I previously tested on UNI-T UT61E digital multimeter. The package includes USBee AX PRO mini logic analyzer, 10 dupont wires for 8 channels (digital only) and 2 ground pins, as well as a mini USB to USB cable for connection to a computer. The instructions to use the logic analyzer can be found on Sigrok Wiki. My computer runs Ubuntu 14.04, but Sigrok and PulseView can also be […]

Status of Orange Pi Boards GPIO Support

Yesterday, one person asked me to make a video showing GPIO control on Orange Pi 2 mini on YouTube, and since I have just completed a post about Orange Pi camera, I thought it might be fun to check GPIO support too. This post focuses on Allwinner H3 boards, but the instructions and status should be very similar for Allwinner A20 and A31s versions. One of the first things you want before starting playing with GPIOs is the expansion header’s pinout chart, and I could not find any until I had the idea to check for schematics, which are available on Orange Pi resources page. I downloaded the schematics for Orange Pi 2, which should be the same as for Orange Pi 2 mini as the only difference is the lack of WiFi module. Orange Pi PC is a little different, and the schematics are nowhere to be found, but […]

How to Use Orange Pi Camera in Linux (with Motion)

Earlier this month, I wrote a Quick Start Guide for Orange Pi Allwinner H3 boards such as Orange Pi PC, and showed how to install and configure Debian on the boards. I’ve also received the $5.90 Orange Pi camera, which when combined an Orange Pi PC, costs around $27 including shipping. So today, I’ve attached the CSI camera to my Orange Pi 2 mini board, and used it with motion to transform for the board into an IP camera. First, you’ll need to insert the camera into CON1 connector with the camera facing the ceiling, and close the black clip to keep it in place. Now connect all cable and power on your board. First, I studied the steps described on that forum thread, and modified Allwinner configuration files, but after one or two hours, I found out some work at been done since May, and it was now much […]

Mini Review of Semlamp SL-011 Audio Controlled Relay for Home Lighting

Last month, I wrote about Semlamp SL-012 a smartphone controlled light switch for 2 lamps that sells for about $11 on DX, and contrary to most others don’t use Bluetooth, nor Wifi, but instead a simple microphone. I decided to try it out by purchasing SL-011 model, controlling only one light, for $8.22 on DealExtreme. Semlamp SL-011 Unboxing and Teardown That’s the package with some instructions in Chinese. The device has black and red wires to connect to 220V on the right of the picture below, blue and brown wires to connect to the lamp, and a microphone attached via a white cable. It’s quite easy to take apart, as they are just two screws to remove, and you can easily pop-up the bottom part of the case to access the board. The top of the board features JQC-3FF 24V relay supporting up to 10A @ 277VAC, as well as […]

A Look at Android and Windows Mini PCs’ Power Consumption in Power Off, Standby, Idle, and Video Playback Modes

I’ve previously measured power consumption of Amlogic S812 and Rockchip RK3288 based TV boxes using a multimeter. This provides relatively accurate measurements, as well as neat power consumption profiles of devices, but it’s a little complex and time-consuming, so it’s not something I would do for all devices. The easiest way to measure power consumption is to use a kill-a-watt type of device, but my first one broke after only 3 months last year.  I purchased a new one recently, so I run run some power measurement tests on several devices. I selected five devices for this test: MeLE PCG01 HDMI stick with Intel Atom Z3735F processor running Windows 10 Zidoo X9 TV box with Mstar MSO9810 running Android 4.4 Open Hour Chameleon TV box with Rockchip RK3288 processor running Android 4.4 Tronsmart Orion R68 Meta TV box with Rockchip RK3368 processor running Android 5.1 Tronfy MXIV TV box with […]

Study Shows Octa Core Processors Bring Little Over Quad Core Processors in Mobile Devices

Silicon vendor are now launching 8-core and even 12-core processors for mobile devices, and I can see some advantages in terms of power consumption in processors leveraging big.LITTLE processing with low power ‘LITTLE’ cores running light tasks such as audio or video playback, while performance ‘big’ cores running much demanding tasks. However, some processors, such as RK3368, feature the same eight cores, and in real-use don’t bring that extra bit of performance or lower power consumption, except in very specific cases. So the only “advantage” of this type of processor is a marketing one, with keyword like “Octa-core”, “64-bit”, etc… Last year, I found out, that more powerful cores may be more important than many cores, when I tested Allwinner A80 processor with PVRMonitor to check CPU usage per core in real-time, and in Antutu, while Browsing the web or playing games, only a few cores were used most of […]

Getting Started with Orange Pi PC, Pi 2 and Pi Plus Development Boards

I’ve recently received a kit based on Orange Pi mini 2 development board powered by Allwinner H3 quad core processor, but contrary to most other devices or boards I reviewed, this one what sent to me by one of my reader (thanks Jon!) as for various reasons he did not need to get it shipped to him. Today, I’ll start by showing off the kit I received, before writing a quick start guide showing how to install a Debian, and build your own Linux image. The instructions will work for all Orange Pi Allwinner H3 boards, including Orange Pi 2, Orange Pi Plus, and the recently launched Orange Pi PC, which has been rather popular thanks to its low $15 price tag. Orange Pi mini 2 Board Kit and CSI Camera This is what I got in the package… The board with a regulatory compliance and safety information sheet, as […]

Tronfy MXIV Telos TV Box Review with Android 5.1

Tronfy MXIV Telos is a TV box powered by Amlogic S812 processor running Android 5.1 Lollipop and costing just above $90 (with coupon), so it will be interesting to find out how it performs compared to Mygica ATV1900AC also based on Amlogic S812 SoC, and Android Lollipop firmware (version 5.0.2), which I reviewed recently, and sells for $169. I’ve already checked the hardware in Tronfy MX4 Telos Unboxing and Teardown, so today I’ll check how the device actually performs. First Boot, Settings and First Impressions I started by connecting peripherals: A USB hard drive to one of the USB port, and a USB hub to the other USB port with a webcam, and two RF dongles for an air mouse and a wireless gamepad, as well as HDMI and Ethernet cables, and the power supply. I then had to press the power button on the unit to start it up, […]

EDATEC Raspberry Pi 5 fanless case