Jean-Luc Aufranc (CNXSoft), Author at CNX Software - Embedded Systems News

March 18, 2020 by Jean-Luc Aufranc (CNXSoft) - 19 Comments

A Typical Day Working from Home

If I read the news right, a couple of you guys and gals have to stay at home for the next few weeks either twiddling your thumbs or working from home. In the suburbs of Chiang Mai, life is pretty normal right now, we haven’t been ordered to stay home, and virtually nobody is wearing masks except the few who want to protect themselves against the air pollution. In the area I live, few are concerned about the coronavirus, but I do have extensive experience working from home so I thought it may be interesting sharing a typical schedule. It’s stating the obvious but once you start working from home, your house is also your office, and it can be hard separating the two. So I’d recommend setting a room for work only, or if not possible a space reserved for work, and setup a schedule to introduce some routine. […]

March 18, 2020 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

$11 DIGOO DG-R611 WiFi Repeater Comes with Two External Antennas

Low-cost WiFi routers such as A5 V11 mini router have been around for many years. The cheaper ones are usually powered by a USB charger sold separately, and support 2.4 GHz WiFI with a single antenna. But I’ve just noticed DIGOO DG-R611 WiFi repeater with support for dual-antenna, data rate up to 300 Mbps, and integrated power supply. It is sold for under $11 on Banggood and Aliexpress, and may be worth a closer look. DIGOO DG-R611 specifications: SoC – Realtek RTL8196E RISC processor @ 400 MHz System Memory – TBD Storage – TBD Networking Wired – 10/100M Ethernet port Wireless 2.4 GHz 802.11b/g/n WiFi 4 up to 300 Mbps Two 2dBi antennas Wireless Transmit Power – 20dBm(MAX EIRP) Repeater, Access Point (AP), or Media bridge modes supported Wireless Security – 64/128-bit WEP, WPA/WPA2, WPA-PSK/WPA2-PSK (TKIP/AES) Power Supply – Integrated 110-230V with US, EU, or UK plug Dimensions […]

March 18, 2020March 18, 2020 by Jean-Luc Aufranc (CNXSoft) - No Comments

reMarkable 2 is a $399 e-Paper Tablet with Pressure Sensitive Pen

reMarkable digital notepad and e-reader was unveiled in 2016, and designed to feel like using actual paper sheets. The device came with a single-core Cortex-A9 processor, a 10.3″ E-Ink display with 1872×1404 resolution, and WiFi connectivity to backup your notes and/or drawings to the cloud or mobile phone. The company is now back with reMarkable 2 e-Paper tablet equipped with a faster and more efficient dual-core Cortex-A7 processor, 1GB RAM, a second-generation CANVAS 10.3″ e-Paper display with the same 1872×1404 resolution but lower latency. The second-generation e-Paper tablet also benefits from a thinner design and much-improved battery life. reMarkable 2 specifications: SoC – Dual-core Arm processor @ 1.2 GHz (possibly NXP i.MX 7Dual processor) System Memory – 1GB LPDDR3 RAM Storage – 8GB internal storage good for around 100,000 pages Display – 10.3″ monochrome digital paper “CANVAS” capacitive touch display partially based on E-Ink Carta technology with 1872×1404 resolution (226 […]

March 18, 2020 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

Updating the BIOS (System Firmware) from the Device Manager in Windows 10

Device Manager: Firmware->Acer Inc System Firmware

I recently started having problems playing YouTube videos in Firefox and Chrome in Ubuntu 18.04. The video would load, and I could see frames at any time, but it would just not play. I soon discovered that killing PulseAudio, and the video would play without audio. I also noticed I had Dummy Output in Sound settings. I tried all usual tricks to fix this, but still no luck. Then I discovered I had audio just after booting my computer, but after a while, there would be no audio at all. This seems to match the time by which the AMD GPU drives crashes (just warning), something that had happened ever since I installed Ubuntu on my Acer laptop. After more failed attempts, I decided to try to update the BIOS using Windows 10. A 10-minute task, right? I would just have to replace the hard drive with one pre-loaded with […]

March 17, 2020March 17, 2020 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

4.2″ and 7.5″ NFC-powered e-Paper Displays Work without Battery

e-Paper displays have great readability under sunlight, and only consume power when updated. But their refresh rate is limited, and most displays are fairly expensive. One way to reduce the cost is to completely remove the battery from the display, and update it through NFC providing both data and power. I’ve just found out about that possibility through 4.2″ and 7.5″ displays offered by Waveshare. All you need is a compatible NFC smartphone, or the company’s ST25R3911B NFC Board to power the display and transfer your image of choice. This works best for signs you may need to infrequently update such as menus, daily schedules, conference badges, labels, etc… Waveshare NFC-powered e-Paper display key features and specifications: Screens 7.5″ display 800×480 resolution 2-level greyscale 170° viewing angle Refresh Time – 5s + data transfer time 4.2″ display 400×300 resolution 2-level greyscale 170° viewing angle Refresh Time – 4s + data […]

March 17, 2020 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

DFI GHF51 Ryzen Embedded R1000 SBC is about the Size of a Raspberry Pi

We’ve seen a fair amount of AMD Ryzen Embedded boards over the last few months including 3.5″ Ryzen Embedded SBC‘s such as Kontron SBC-VR1000 and IBASE Technology IB918, as well as larger boards such as SAPPHIRE FS-FP5R 5×5 motherboard. The most compact Ryzen Embedded board we covered so far must have been the upcoming Sapphire NP-FP5 based on Ryzen R1305G processor with a 4″x4″ (10.16 x 10.16 cm) form factor. But DFI GHF51 1.8″ SBC takes the crown of the smallest Ryzen Embedded SBC, with the business card / Raspberry Pi sized board measuring just 84 x 55 mm, and featuring an AMD Ryzen Embedded R1000-series processor combined with up to 8GB RAM. DFI GHF51 specifications: SoC – AMD Ryzen Embedded R1000 Series with Radeon Vega 3 GPU; 12W CPU System Memory – 2GB/4GB/8GB single-channel DDR4 3200MHz Storage 1x 16GB/32GB/64GB eMMC flash 64Mbit SPI Flash for BIOS (supports UEFI boot […]

March 16, 2020 by Jean-Luc Aufranc (CNXSoft) - No Comments

Omnichip Devkit 2 Features Nordic nRF52832 based zGlue ZiP Multichip Module

We first covered zGlue Integration Platform (ZiP) in 2018 when the company introduced its chip-stacking technology with a fitness tracker based on ZGZL1BA ZiP equipped with chips from Dialog Semiconductor, Analog Devices, Macronix, MCube and others. The concept is similar to SiP (System-in-Package), but zGlue claims the costs and lead times are much lower with the technology. Earlier this year, ZiP was back in the news thanks to Antmicro GEM custom RISC-V/Arm ASIC, and today, I was informed about zGlue Omnichip devkit 2 that is equipped with a ZiP of the same name, and that can be used to evaluate the technology. zGlue OmniChip ZiP zGlue OmniChip ZiP is a multichip module with the following ICs (aka Chiplets) and specifications: Nordic Semiconductor nRF52832 Cortex-M4F microcontroller with Bluetooth LE and NFC connectivity Texas Instruments BQ25120AYFPR battery charger, buck regulator Maxim Integrated MAX86140ENP+ optical pulse oximeter Texas Instruments TMP108AIYFFR temperature sensor Bosch […]