Video Category - Page 108 of 329 - CNX Software

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 […]

March 13, 2020March 13, 2020 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

K1 Smart Lock Box Secures Door Keys with Fingerprint, Mobile App, or Passcode (Crowdfunding)

We’ve previously reported about smart dock look solutions such as Xiaomi Sherlock M1 which allows you to provide access control without keys using your smartphone instead. Security concerns aside, one disadvantage of the Xiaomi smart lock is that it is only compatible with some doors, and can be complicated to install. YEEUU TECH has found a way that works with all doors with K1 smart lock box, a simple rugged box used to store physical keys, and that can be opened with a smartphone app, fingerprints, or a passcode. K1 smart lock box features and specifications: Bluetooth connectivity Permanent or temporary passcode unlock via backlit keypad; up to 100 passwords Permanent or temporary fingerprint unlock (optional); up to 50 fingerprints Remote control and instant share Time window support In-app management, access logs USB – 1x USB Type-C port for emergency power to open the box when batteries are dead Security […]

March 12, 2020July 31, 2020 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

$5 Sinilink WiFI USB Power Switch Works with Tasmota Firmware, Supports up to 20V/5A

Late last year, ITEAD launched Sonoff Micro WiFi USB switch that allows you to turn on and off USB powered devices over WiFi using eWelink app for Android or iOS. It integrates with Amazon Alexas and Google Home, and does the job, but people who like to use the open-source Tasmota firmware will be disappointed to learn it’s not based on ESP8266 processor hence not compatible. Luckily, there’s another option: Sinilink WiFi USB switch (aka XY-WFUSB) based on ESP8266 WiFi SoC, and supporting up to 20V/5A according to the manufacturer. It is currently sold for under $5 including shipping on Aliexpress. Sinilink XY-WFUSB specifications: WiSoC – Espressif ESP8266 processor with 802.11b/g/n WiFi 4 USB Input – USB type-A female port supporting 3.5V to 20V up to 5A (100 Watts max) USB Output – USB type-A male port up to 100W Misc On/off button – Pressing 5 seconds also change the […]

March 11, 2020September 2, 2024 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Meshtastic Mesh Networking Project Combines ESP32, LoRa and GPS Radio

Meshtastic is a project using off-the-shelf, inexpensive ESP32-based hardware with GPS & LoRa connectivity to create mesh networks helping hikers. skiers, paragliders, or people exercising other outdoor activities communicate short messages such as their GPS location. This allows each member of a private mesh network to see the location and distance of all other members and read/or any text messages sent to a group chat. No phone is required unless you have an ESP32 LoRa board without GPS in which case it would get the GPS coordinates from your phone over Bluetooth. A phone is also needed to send a message. The project currently works on three different boards TTGO T-Beam, TTGO LORA32 and Heltec LoRa 32. The T-Beam is recommended as it sells for around $26 plus shipping and features a 18650 battery holder so you can source the battery easily locally. Just make sure to purchase the right […]

March 10, 2020March 10, 2020 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

AirView Wireless Touchscreen Display Works with Phones, Laptops, Raspberry Pi, Etc. (Crowdfunding)

We’ve already written about several displays that take USB-C, HDMI or/and WiFi inputs to add a monitor to phones or computers including DUO add-on display and LAPSCREEN. AirView is another one of those and has launched on Kickstarter with a 13.3″ and 15.6″ Full HD versions featuring a touchscreen, built-in Miracast & AirPlay support, as well as HDMI and USB-C ports. It works with Android/iOS phones, traditional laptops & computers, SBC’s such as Raspberry Pi, and even game consoles. Two Airview models are available with the following hardware specifications: 15.6-inch model 1920×1080 resolution @ 60 Hz (4K model planned, but not available in KS) IPS display Multi-touch support Brightness – 250cd/m2 SRGB gamut – 98% Dimensions – 352 x 228 x 9.4 mm Weight – 1080 grams 13.3-inch model 1920×1080 resolution @ 60 Hz IPS display Multi-touch support Brightness – 300cd/m2 SRGB gamut – 100% Dimensions – 310 x 200 […]