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March 26, 2020June 29, 2021 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

M5Stack ATOM is a Compact, Fully Integrated ESP32 Development Kit

When working on a project you may need an MCU or MCU board, an external display, a breadboard, and other accessories like sensors and jumper cables. It does the job, but it can be messy. Recently, we wrote about M5Stack M5StickV AI camera, but the company is better known for its ESP32 IoT development kits enabling neater project thanks to hardware that integrates MCU, I/O headers, display, and sensors into an enclosure. Their latest offerings are ATOM series toolkits that come in two versions: ATOM Lite and ATOM Matrix. Let’s have a look at both. M5Stack ATOM Lite Specifications: SiP – ESP32-PICO-D4 system-in-package with ESP32 dual-core processor with WiFi 4 and Bluetooth 5.0/5.1 Storage – 4 MB flash Crystal oscillator and passive components USB – 1x USB Type-C port Expansion 9-pin header with 6 GPIOs compatible with jumper cables 4-pin PH2.0 connector with 2x GPIO, 5V and GND Misc – […]

March 26, 2020 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Onyx Boox Nova 2 7.8″ eReader Runs Android 9.0

We wrote about reMarkable 2 10.3″ e-Paper Tablet running Linux a few days ago, but there’s now another option with Onyx Boox Nova 2 eReader equipped with a 7.8″ display and running an operating system based on Android 9.0. The device comes with an unnamed octa-core processor coupled with 3GB RAM, 32GB storage, support for Wacom pen and touch input, and a 3,150 mAh battery. Onyx Boox Nova 2 specifications: SoC – Unnamed octa-core processor @ 2.0 GHz, but likely Qualcomm Snapdragon 625 found in the company’s Boox Max 3 eReader. System Memory – 3GB RAM Storage – 32GB flash, MicroSD card reader Display – 7.8″ E Ink Carta Plus inductive Wacom + capacitive touch screen with 1872×1404 resolution, 16 shades of grey, and the SNOW Field function to reduce artifacts during a partial refresh Frontlight – MOON Light 2 to use the device in the dark or under poor […]

March 21, 2020March 21, 2020 by Jean-Luc Aufranc (CNXSoft) - 13 Comments

An Arduino based Open Source Ventilator to Fight against COVID-19?

COVID-19 has disrupted most people lives well beyond the health crisis, with an economic fallout on-going that may lead to a 24% GDP contraction in the US and up to 12% worldwide in Q2 2020, and I assume the consequences may span over several years, so we should do everything to mitigate any effects from the disease. Right now, the urgent part is to handle the health crisis, and there’s a shortage – or soon will be – of medical supplies such as ventilators for people in critical conditions, and if hospitals become full they’ll start refusing admissions of some people even in critical conditions, as it happened in Wuhan, letting people die at home. So there are various initiatives and projects to develop open-source ventilators. First, Innovation Management reports Ennomotive has launched a non-profit online competition for the ideation of low-cost, easy-to-build solutions with the goal of speeding up […]

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 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 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 […]

March 15, 2020March 15, 2020 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Radiona ULX3S Open Source Hardware ECP5 FPGA Development Board Launched for $99 and Up (Crowdfunding)

ULX3S Lattice ECP5 FPGA Educational Board

Last summer, we wrote about Radiona ULX3S education board combining a Lattice Semi ECP5 FPGA with an Espressif Systems ESP32 WiFi & Bluetooth WiSoC. Designed for a digital logic course at the University of Zagreb, the board is open-source hardware with KiCAD hardware design files released on GitHub, and programmable with the Arduino IDE (FPGArduino) and ProjectTrellis open-source toolchain. At the time, there was only a version based on Lattice ECP5 85F with 84K LUT, but they’ve now made versions with cheaper variants of ECP5 FPGA and launched the board on Crowd Supply. Radiona ULX3S specifications: FPGA (one of the other) Lattice ECP5 LFE5U-85F-6BG381C with 84K LUT Lattice ECP5 LFE5U-45F-6BG381C with 44K LUT Lattice ECP5 LFE5U-12F-6BG381C with 12K LUT System Memory – 32MB SDRAM @ 166 MHz Storage – 4–16MB Quad-SPI Flash for FPGA config and user data storage; MicroSD slot Audio – 3.5 mm jack with 4 contacts (analog […]

March 14, 2020March 14, 2020 by Jean-Luc Aufranc (CNXSoft) - 10 Comments

Wio Terminal Features Microchip SAMD51 MCU, Dual-Band WiFI & Bluetooth WiFI, and 2.4″ LCD

Microchip SAM D5x Arm Cortex-M4 microcontrollers were introduced in 2017, and the next year we started to see Arduino or MicroPython compatible board brought to market including Adafruit Metro M4 or Tachyon boards. Seeed Studio has now introduced its own Arduino & MicroPython compatible SAMD51 platform with Wio Terminal also integrating an RTL8720DN dual-band WiFi 4 and Bluetooth 5.0 chip, and 2.4″ LCD display. There are also Grove connectors to add sensor modules, and a 40-pin header to use the device like a Raspberry Pi HAT. Wio Terminal features and specifications: MCU – Microchip SAMD51 (ATSAMD51P19) Arm Cortex-M4F microcontroller @ 120 MHz (can be overclocked to 200 MHz) with 192KB RAM, 512KB flash Storage – 4MB external SPI flash, MicroSD card slot up to 16GB Display – 2.4″ LCD screen with 320×240 resolution (ILI9341 driver) Audio – Microphone and buzzer Connectivity – Dual-band WiFi 4 802.11b/g/n and Bluetooth 5.0 via […]