$49 STEVAL-WESU1 Wearable Sensor Unit Reference Design is Based on STMicro STM32 MCU

STMicroelectronics STEVEL-WESU1 is a wearable open source hardware reference design and development kit comprised of a board with STM32L1 ARM Cortex-M3 micro-controller, BlueNRG-MS Bluetooth LE chip, and sensors, a battery, and a watch band. STMicro “WESU” specifications and features: MCU – STMicro STM32L151VEY6 32-bit ARM Cortex-M3 MCU @ 32 KHz to 32 MHz, 512KB flash, 80 KB SRAM Connectivity – Bluetooth 4.0 LE via BlueNRG-MS BLE network processor Sensors – 3D accelerometer + 3D gyroscope (LSM6DS3), 3-axis magnetometer (LIS3MDL),  MEMS pressure sensor (LPS25HB) USB – 1x micro USB port for recharging Debugging – SWD connector for debugging and programming capability Power 100 mAh Li-Ion battery included, UN38.3 tested and certified STNS01 Li-Ion linear battery charger STC3115 Fuel gauge IC Watch strap with plastic housing included Certifications –  FCC (FCC ID: S9N-WESU1), IC (IC: 8976C-WESU1), RoHS The kit can be controlled by ST WeSU app for Android and iOS, and developed using BlueST […]

LimeSDR Open Source Hardware Software Defined Radio Goes for $199 and Up (Crowdfunding)

Canonical and Lime Micro showcased SoDeRa software defined radio (SDR) a couple of months ago, with a promise to launch a crowdfunding campaign later this year. They’ve fulfill their promise, and launched the open source SDR, renamed to LimeSDR, on Crowdsupply. LimeSDR board specifications: FPGA – Altera Cyclone IV EP4CE40F23 Altera FPGA compatible with EP4CE30F23 System Memory – 256 MB DDR2 SDRAM RF Lime Microsystems LMS7002M RF transceiver with continuous coverage of the frequency range between 100 kHz and 3.8 GHz; 61.44 MHz bandwidth 4 x TxOut and 6 x RxIn U.FL connectors Power Output (CW): up to 10 dBm Wi-Fi, GSM, UMTS, LTE, LoRa, Bluetooth, Zigbee, RFID, Digital Broadcasting, configurable through apps. USB – 1x micro USB3 via CYUSB3014-BZXC Cypress Microcontroller  for control, data transfer and power Misc – Status LEDs, RGB LEDs, 4x switches Power – USB or external power supply Dimensions –  100 mm x 60 mm The board […]

Zidoo X1 II 4K Android TV Box (Rockchip RK3229) Review

After skipping MXQ-4K TV box review due to severe issues with video playback, Zidoo X1 II is actually the first device powered by Rockchip RK3229 processor that I’ve fully tested. I’ve already taken pictures of the box, and opened it up to check the board in Zidoo X1 II unboxing and teardown post,  and confirmed 4K videos could play pretty well from my USB hard drive using Zidoo Media Center after disabling Media Scanner process. So today, I’ll review other parts of the firmware, as well as video playback with ZDMC 16.0, Zidoo’s fork of Kodi 16.0. First Boot, Settings and First Impressions The device only has two USB ports, and I used one for a USB hard drive, and the other for RF dongles for MINIX NEO A2 Lite air mouse,  a USB keyboard, and the RF dongle for Tronsmart Mars G01 gamepad via a USB hub. I also […]

LONG-CZ J8 Could Be The World’s Smallest Phone

Smartphone displays are getting bigger each year, but at the other end of the spectrum, LONG-CZ J8 phone could the world’s smallest at just 68 x 23 x 11 mm, and 18 grams. It takes micro SIM card to make calls, but also doubles (triples?) as a Bluetooth headset and FM Radio. LONG-CZ J2 specifications: Processor – Mediatek Display – 0.6″‘ OLED display Cellular Connectivity – GSM 850/900/1800/1900 via micro SIM card slot Connectivity – Bluetooth 3.0 USB – 1x micro USB port for charging Battery – Capacity TBD; Up to 5 hours talk time, 96 hours standby time. Dimensions –  68 x 23 x 11mm Weight 18g The phones ships with a data cable, a user’s manual in English and Chinese, a strap, one ear loop, and two ear caps. Nine languages are supported: English, French, Italian, Russian, Hindi, Russian, Thai, Portuguese, and Spanish. The phone is not quite […]

BBC Micro:Bit Board is Now Getting into the Hands of British Students

After several delays, BBC is now giving free Micro:Bit Bluetooth LE enabled boards to UK students with the goal of getting them interested in coding and electronics in a way that’s even easier and cheaper than using a Raspberry Pi board. Micro:bit specifications: MCU – Nordic nRF51822 Bluetooth SoC based on Cortex M0 core @ 16MHz with 16KB RAM 2x user buttons, 1x reset button 25x red user LEDs  in a 5×5 matrix Connectivity – Bluetooth LE Sensors – Compass, magnetometer, accelerometer USB – 1x micro USB port for port and programming Expansion – 20-pin edge connector, 5x “rings” for 3V, GND, and 3 digital/analog I/Os Power – 5V via USB or battery port to connect two AAA batteries Dimensions – 4cm x 5cm There are four ways to “code” the board: Code Kingdoms JavaScript  graphical ‘drag and drop’ and text-based programming, Microsoft Block Editor graphical, drag and drop code […]

Embedded Linux Conference 2016 and OpenIoT Summit 2016 Schedule

The Embedded Linux Conference 2016 and the OpenIoT summit 2016 will take place on April 4 – 6, 2016 in San Diego, California, and over 800 attended will meet including kernel & system developers, userspace developers, and product vendors. The Linux Foundation has recently published the schedule, so I’ve had a look at some of the talks, and designed my own virtual schedule to find out more the current development focus although I won’t attend. Monday April 4 10:40am – 11:30am – Linux Connectivity for IoT by Marcel Holtmann, Intel OTC There are many connectivity solutions that available for IoT. For example Bluetooth Low Energy, 802.15.4, Zigbee, OIC, Thread and others. This presentation will provide and overview of the existing technology and upcoming standard and how they tie into the Linux kernel and its ecosystem. 11:40 – 12:30 – BoF: kernelci.org: A Million Kernel Boots and Counting by Kevin Hilman, […]

TinySine Bluetooth, WiFi and USB Relays Come with an Optional Enclosure, Support Android and iOS Smartphones

It’s now fairly easy to find the hardware to create WiFi or Bluetooth controlled relays, but you usually have to design your own enclosure and Android app, and if you’d like something that’s ready to use out of the box TinySine wireless relays such as TSRB430 (Bluetooth) or TSRW430 (WiFi) might be an interesting option. There;s also a version with USB control. TSRB430 / TSRB430 / TSRU430 specifications: 4x Omron G8P 30A/250VAC | 20A/28VDC relay; SPST-NO (normally open) types. Connectivity – XBEE module either: Bluetooth Bee module based on CSR BC417143 Bluetooth 2.0 chipset Roving Networks WiFi Bee module with 802.11 b/g radio USB Bee module with a CP2102 USB to UART chip Power Supply – 12V/1A via 2.1mm jack with positive core polarity Dimensions – 122mm x 87mm x  x 31mm (board) There are also versions with 2 and 8 relays. I kind of wish they had models taking 220V AC input instead […]

Raspberry Pi 3 Model B Board Features a 64-Bit ARM Processor, Adds WiFi and Bluetooth Connectivity

The Raspberry Pi foundation is working on yet another model of the popular Raspberry Pi boards, as the Raspberry Pi 3 model B board has showed up on the FCC website. The new board looks very similar to Raspberry Pi 2 model B, but adds on-board WiFi 802.11 b/g/n (2.4GHz only) and Bluetooth 4.0. Let’s play “spot the difference” with Raspberry Pi 2 at the top and Raspberry Pi 3 under. The processor looks the same as the BCM2836 quad core Cortex A7 SoC found on model 2 B, but one redditer claims it could be a 64-bit processor due to some MagPi ad. [Update: that’s the MagPi ad which confirms Raspberry Pi 3 will feature a 64-bit ARM processor @ 1.2 GHz. Thanks Gabe! ] We’ll find the WiFi/BT chip antenna on the top left corner, and two through holes on the right of the 40-pin connectors, likely the […]

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