ESPurna-H is a Compact Open Source Hardware Board with ESP8266 WiSoC, a 10A Relay, HLW8012 Power Monitoring Chip

ESPurna is an open source firmware for ESP8266 based wireless switch as such Sonoff POW, which I’ve been personally using to monitor my office’s power consumption. The developer, Xose Pérez (aka tinkerman), has now developed his own hardware with ESPurna-H board, as existing wireless switches with power monitoring functions would not fit into a gang box. ESPurna-H board specifications: WiFi Module – ESP12 with Espressif ESP8266 WiSoC Relay – Songle SRD-05VDC-SL-C 10A relay with NO and NC connection Power Monitoring – HLW8012 chip as found in Sonoff POW Expansion – 2x 5-pin header with the programming GPIOs, and two connections for external button and LEDs Misc – Reset button Power Supply Input –  100 ~ 240V AC Output – 5V up to 600 mA via Hi-Link HLK-PM01 Safety – Optical isolation between the logic circuit and the relay circuit Dimensions – 50x50x20mm Xose designed the board with Eagle 8.0 and released […]

Open Source ARM Compute Library Released with NEON and OpenCL Accelerated Functions for Computer Vision, Machine Learning

GPU compute promises to deliver much better performance compared to CPU compute for application such a computer vision and machine learning, but the problem is that many developers may not have the right skills or time to leverage APIs such as OpenCL. So ARM decided to write their own ARM Compute library and has now released it under an MIT license. The functions found in the library include: Basic arithmetic, mathematical, and binary operator functions Color manipulation (conversion, channel extraction, and more) Convolution filters (Sobel, Gaussian, and more) Canny Edge, Harris corners, optical flow, and more Pyramids (such as Laplacians) HOG (Histogram of Oriented Gradients) SVM (Support Vector Machines) H/SGEMM (Half and Single precision General Matrix Multiply) Convolutional Neural Networks building blocks (Activation, Convolution, Fully connected, Locally connected, Normalization, Pooling, Soft-max) The library works on Linux, Android or bare metal on armv7a (32bit) or arm64-v8a (64bit) architecture, and makes use […]

FalconGate Open Source Anti-Hackers Smart Gateway Runs on Raspberry Pi, Banana Pi, and other ARM Debian Boards

Everyday we can read stories about password database hacking, malware, ransomware, and so on, and companies can try to protect themselves by paying professionals that do a more or less good jobs, but individuals can’t afford professional service, so it is harder to protect oneself. One solution is to educate yourself as much as possible, but everybody has the time and/or skills to do it, so developers have worked on  FalconGate open source smart gateway that’s supposed to protect home devices against hackers, and alerts the user in case of intrusions on your home network, or devices misbehaving. FalconGate is said to be able to: Block several types of Malware based on open source blacklists Block Malware using the Tor network Detect and report potential Malware DNS requests based on VirusTotal reports Detect and report the presence of Malware executables and other components based on VirusTotal reports Detect and report […]

Instreamer App Streams Zidoo X8/X9S/X10 HDMI Video Input to YouTube Live / RTMP Servers with FFmpeg

Zidoo X8, X9S and the upcoming X10, are TV boxes powered by Realtek RTD1295 processor with an HDMI input. The stock firmware already supports UDP broadcasting, but robbi5 decided he needed more, and designed Instreamer “HDMI IN Streamer” app leveraging work from Danman’s ZidoStream app for Mstar TV boxes and Zidoo’s own VideoAndHdmiIN app. Instreamer app supports the following: Streaming as MPEG-TS to network (unicast/multicast) Streaming in FLV format to RTMP server (e.g. Youtube) No need for intermediate recording file – thus no length limit Streaming runs in background HDMI out is usable as pass-through That looks good. Installation is easy. Download and install the latest Instreamer APK release Download and extract FFmpeg Android binaries to /mnt/sdcard You’ll be able to adjust a few video and audio settings after launching the app  (not tested as I don’t have X9S anymore). You can now start a terminal, and stream HDMI input […]

GnuBee Personal Cloud 1 Low Cost Linux NAS Supports Up to Six 2.5″ SATA Drives (Crowdfunding)

Networked Access Storage (NAS) with a large number of SATA bays usually cost several hundreds dollars up to thousands of dollars depending on the features set and performance, but there’s a new a project called GnuBee Personal Cloud 1, or GB-PC1, that delivers a MIPS Linux system supporting up to six 2.5″ SATA drives for less than $200. GB-PC1 NAS specifications: Processor – MediaTek MT7621A dual core, quad thread processor @ 880 MHz, overclockable to 1.2 GHz System Memory – 512 MB DDR3 Storage – micro SD card slot tested up to 64 GB, 6x 2.5” SATA HDD or SSD Connectivity – Dual Gigabit Ethernet USB – 1x USB 3.0 port, 2x USB 2.0 ports Serial port – 3-pin J1 connector or 3.5 mm audio-type jack Power – 12 VDC @ 3 A via 5.5 mm x 2.1 mm, center-positive barrel jack Dimensions –  21.6 cm (L) x 7 cm […]

Google Releases Guetzli Open Source JPEG Encoder Generating 20 to 35% Smaller Files Compared to Libjpeg

Google has been working one several front to make data and images smaller, hence faster to load from the Internet, with project such as Zopfli algorithm producing smalled PNG & gzip files, or WebP image compression algorithm that provides better lossless compression compare to PNG, and better lossy compression compared to JPEG, but requires updated support from clients such as web browsers. Google has now released Guetzli algorithm that improve on the latter, as it can create JPEG files that are 20 to 35% smaller compared to libjpeg with similar quality, and still compatible with the JPEG format. The image above shows a close up on a phone line with the original picture, the JPEG picture compressed with libjpeg with the artifacts around the line, and a smaller JPEG picture compressed with Guetzli with less artifacts. You can find out more about the algorithm in the paper entitled “Guetzli: Perceptually […]

$80 BeagleBone Blue Board Targets Robots & Drones, Robotics Education

Last year, we reported that BeagleBoard.org was working with the University of California San Diego on BeagleBone Blue board for robotics educational kits such as EduMiP self-balancing robot, and EduRover four wheel robot. The board has finally launched, so we know the full details, and it can be purchased for about $80 on Mouser, Element14 or Arrow websites. BeagleBone Blue specifications: SiP (System-in-Package) – Octavo Systems OSD3358 with TI Sitara AM3358 ARM Cortex-A8 processor @ up to 1 GHz,  2×32-bit 200-MHz programmable real-time units (PRUs), PowerVR SGX530 GPU, PMIC, and 512MB DDR3 Storage – 4GB eMMC flash, micro SD slot Connectivity – WiFi 802.11 b/g/n, Bluetooth 4.1 LE (TI Wilink 8) with two antennas USB – 1x USB 2.0 client and host port Sensors – 9 axis IMU, barometer Expansion Motor control – 8x 6V servo out, 4x DC motor out, 4x quadrature encoder in Other interfaces – GPIOs, 5x UARTs, 2x […]

Turtle Board is a Raspberry Pi 2 Like FPGA Board for J-Core J2 Open Source SuperH SH2 SoC

J-core J2 is an open source processor and SoC design implemented in VHDL, and using  SH2 instruction set found in some Renesas (previously Hitachi) micro-controllers. The code available royalty free under a BSD license, and it’s also patent-free since all SH2 related patents expired expired in October 2014. The developers used to run the code on Xilinx Spartan 6 based Numato Mimas v2 board since it was cheap ($50) and mostly did the job. “Mostly”, because it still lacked Ethernet, capability for SMP and the serial port was slow, so they decided to design their own Turtle Board to address those issues. Turtle Board preliminary specifications: FPGA – Xilinx Spartan 6 LS25 or LS45 FPGA MCU – 8-bit Atmel MCU for load/update flash at power on. Storage – micro SD slot, 8MB SPI flash System memory – 256 MB RAM Video & Audio Output – HDMI and AV jack Connectivity […]

Memfault IoT and embedded debugging platform