Posted on

Khadas Captain / Edge SBC Review – Part 2: Ubuntu 18.04

I received Khadas Edge Developer Package with Khadas Edge RK3399 module, Khadas Captain carrier board, and several accessories a few weeks ago, and after checking the hardware in the first part of the review, I’ve now taken the time to review software support, specially Ubuntu 18.04 on the board. Khadas Edge / Captain Firmware There are currently four main choices of firmware for Khadas Edge / Khadas Captain: Ubuntu 18.04 OS with LXDE desktop environment @ https://dl.khadas.com/Firmware/Edge/Ubuntu/ Android ROM @ https://dl.khadas.com/Firmware/Edge/Android/ with Android Nougat being a proper release, Android Oreo (available now) a temporary version that will not be supported, and Android P that will be released and supported by Rockchip later on in 2019 Armbian RK3399 for Khadas Edge looks to be work-in-progress right now LibreELEC for playing videos on the platform I decided to focus on Ubuntu 18.04 for this review, and Karl who has his own sample […]

Posted on

eduArdu is an Open Source Hardware Arduino Learning Board

Olimex has recently launched eduArdu, an open source hardware Arduino compatible board specifically designed for education with plenty of buttons, LEDs,  and sensors, as well as tutorials and samples source code to help young and older aspiring makers get started with Arduino programming. eduArdu hardware specifications: MCU – Microchip ATMega32U4 AVR microcontroller (as used in Arduino Leonardo) Display – 8×8 LED matrix display Audio – Built-in microphone, buzzer User Inputs – Joystick with push button, 6 Maykey-Makey type buttons Sensors – Utrasound distance sensor, light sensor, PIR sensor, temperature sensor (-45 to +125C) Expansion Two servo motor connectors UEXT connector Debugging / Programming – 1x micro USB port Misc – RGB LED,  IR transmitter, IR receiver, status LED, reset button Power Supply LiPo charger and battery connector 5V via USB port Dimensions – 170 x 75 mm Programming can be done with the Arduino IDE, or Snap4Arduino visual programming IDE. […]

Khadas Edge2 Arm mini PC
Posted on

RockPro64 RK3399 Board Linux Review with Ubuntu 18.04 + LXDE

Let’s do one more RK3399 Linux review using Pine64 RockPro64 development board. After shortly checking out the hardware, I’ll test Ubuntu 18.04 “Bionic” LXDE on the board, test 3D graphics acceleration, video playback, USB storage and network performance among other things on the board. RockPro64 Board Unboxing The board came in a cardboard package, and the sticker made it clear I had received the 2GB LPDDR4 version. Even after FriendlyELEC NanoPi M4 announcement, Rockchip ROCKPro64 is still the cheapest RK3399 development board around, so it should come as no surprise that the board does not come with any accessories by default. Another way to keep the price low was not to include any built-in storage apart from SPI flash, so instead most people will either boot from micro SD card or an eMMC flash module both of which need to be purchase separately. Another cost-saving is the lack of built-in […]

Posted on

Self-hosted OpenGL ES Development on ChromeOS?

This is a guest post by blu about developing OpenGL ES applications on Chrome OS. Ever since I’ve been using a chromebook in developer mode as my daily notebook (can’t beat 10h-plus battery life on ~300EUR well-performing machines), I’ve been missing one thing ‒ OpenGL ES coding under ChromeOS. My chromebook is more than well-equipped for GLES3 hardware-wise (verified via dual-booting to ArchLinux), and I always have up-to-date toolchains self-hosted under ChromeOS, thanks to an excellent package manager aptly named Chromebrew. And yet my coding-on-the-go under ChromeOS has been limited to console apps ‒ ChromeOS has strict limitations which include no X11 display manager, or any other industry-standard display manager that I’m aware of, and I don’t feel like dual-booting into ArchLinux too often ‒ ChromeOS has spoiled me with its fine-tuned performance. The no-display-manager limitation of ChromeOS is usually worked-around via Crouton but in my case Crouton would not […]

Posted on

AIO-3399J Development Board Review with Ubuntu 16.04

Regular readers will know that Firefly team sent  me several of their Rockchip boards for evaluation, and I started with a review of ROC-RK3328-CC development board powered by Rockchip RK3328 processor. This time, I went with the high-end AIO-3399J board comprised of a features-packed baseboard and a Rockchip RK3399 system-on-module. Just like with the previous review, I’ve decided to focus on Linux support, in this case Xunbuntu 16.04, and I’ll do an Android review on the company releases Android 8.1 for Firefly-RK3399 board. First Boot with AIO-3399J Board Before booting the board, I inserted the heatsink, and connected the provided WiFi antennas. I also connected some devices and cables, including a mouse,  the male to male USB cable to the top USB 3.0 (OTG) port for firmware update, a HDMI cable to my TV, and Ethernet cable, as well as the serial debug board. The final step was to connect […]

Posted on

This Smartphone Tripod with Microphone is Designed for Audio/Video Recording

More and more use cases are being handled by smartphones, and we’ve recently seen smartphone stands helping with specific applications such as keyboard and mouse mobile gaming, or a flexible lazy holder allowing you to carry the phone around hands-free among other things. I’ve now come across another smartphone stand that’s designed for audio recording with a built-in microphone, and that could be useful to video bloggers, or others requiring high(er) quality audio recording on the go. Specifications & key features: Microphone Material – ABS + Aluminum alloy Monomer: Electrets condenser Directivity – Heart-shaped Test voltage: 1.5V Impedance: 220Ω Sensitivity: -39db±3dB (0dB=1V/Pa at 1kHz) S/N: ≥65dB 3.5mm audio jack connector 360 degree tube rotation design for microphone holder Foldable tripod with adjustable clamp for smartphone The accessory works with any phones that comes with a 3.5mm audio jack, or  adapter for phones with a USB type C port only. The […]

Rockchip RK3568/RK3588 and Intel x86 SBCs
Posted on

MatchBox LoRaWan Gateway Review – Part 1: Unboxing and Teardown

Last spring, I wrote about MatchX.io MatchBox LoRaWAN gateway with GPS, WiFi, and Ethernet connectivity. The gateway is equipped based on a Mediatek WiFi module running Linux (OpenWrt/LEDE), Semtech chips for the LoRa part, and support up to 65,535 nodes, such as the as well as MatchStick, MatchModule, and MatchCore sensors provided by the company. I’ve just received MatchBox gateway for review, but I’m still waiting for 920-925MHz LoRa nodes as they are going through the FCC certification process, and I also have to wait for clarifications regarding local regulations. So in the meantime, I’ll check out the gateway hardware. MatchBox LoRaWAN Gateway Unboxing The gateway is shipped with a power supply, power cord, two antennas, an installation guide,… as well as three screws and pegs to wall mount the gateway and power supply, and in case you want to install the gateway on a pole, as shown below, for […]

Posted on

MA8-4K is a $19 Android TV Box based on Rockchip RK3229 Processor (Promo)

MA8-4K is yet another TV box running Android 5.1 on Rockchip RK3229 quad core Cortex A7 processor, but it might one of the cheapest right now, as GearBest offers it for $18.99 shipped with GBMA87 coupon instead of $27.99 “flash sale” price. This is likely valid for only a few hundred boxes. MA8-4K specifications: SoC – Rockchip RK3229 quad core ARM Cortex A7 processor @ 1.5 GHz with ARM Mali-400MP2 GPU System Memory – 1GB DDR3 Storage – 8GB flash + micro SD card slot up to 32GB Video Output – HDMI 2.0 up to 4K2K @ 60 fps, and 3.5mm AV output (composite) Audio Output – HDMI, AV, and coaxial S/PDIF Connectivity – 10/100 Mbps Ethernet, 802.11 b/g/n WiFi (AP6051 chip); Bluetooth is mentioned in title, but not in description, so it’s unclear whether it’s implemented. USB – 2x USB 2.0 host ports Power Supply – 5V/1.5A Dimensions – […]

Khadas VIM4 SBC