Nordic Semiconductor nRF52832 is a Bluetooth 4.2 LE SoC based on an ARM Cortex-M4F core that was first released about a year ago in a QFN48 package targeting IoT and Wearables. But if your application is really tight on space and the 6x6mm package is just too big, the company has just introduced a 3.0×3.2mm WL-CSP (Wafer Level Chip Scale Package ) package for nRF52832 decreasing the area to about one quarter of the QFN package The specifications are exactly the same as the QFN, but let’s see what we’ve got in that 9.6mm2 package: MCU Core – ARM Cortex-M4F @ 64 MHz with DSP & FPU, 512kB Flash and 64kB RAM 2.4 GHz radio for ANT, Bluetooth 4.2 LE, and Gazell connectivity; 5.5mA peak RX/TX currents; on-chip RF Balun On-chip NFC tag Peripherals – 3x Master/Slave SPI, 2x Two-wire interface (I²C), UART (RTS/CTS), 3x PWM, Digital microphone interface (PDM) Security […]
RisingHF IoT Discovery is a LoRaWAN Evaluation Kit for Raspberry Pi
There are many current and upcoming long range low power wireless protocols for the IoT, but this morning I learned that South Korea launched a LoRa network (aka LoRaWAN), after another launch in the Netherlands earlier this year. While there are also some LoRa hobbyist kits such as LoraONE and LoPy being worked on, I decided to look on Aliexpress, but only got two products were listed: a LoRaWAN temperature and humidity sensor, and a LoraWAN USB modem. Both of them are made by a company called RisingHF. Among the products offered by the company, there’s a potentially interesting development kit called RisingHF IoT Discovery with the following components: 1x Raspberry Pi board 1x RHF0M301 LoRa Gateway based on Semtech SX1301 1x RHF4T002 adapter for Raspberry Pi and RHF0M301 1x RHF3M076 LoRaWAN USB AT Modem End point to connect to computer. It operates at 434MHz, 470MHz,868MHz, and 915MHz 3x RHF76-052 […]
Allwinner and Qualcomm Partner on Android and Windows 10 LTE Tablets
Allwinner, a leading tablet SoC vendor, and Qualcomm have decided to collaborate, and introduced three new LTE tablet reference designs based on Qualcomm Snapdragon 425, 430, and 435 available to Chinese OEMs, on top of Snapdragon 210, 212 and 410 designs released last year. The full technical technical details about the reference designs are only available to OEMS who signed an NDA, but the key specifications are as follows: SoC – Qualcomm Snapdragon 420, 430, 435 application processors System Memory – 2G DRAM Storage – 32GB internal memory Connectivity – CAT 6 LTE band The tablet will run Android, but Windows 10 is also being worked on. The agreement only covers tablets, so Allwinner will not be involved in LTE smartphones. Since both Allwinner and Qualcomm are silicon vendors, and competitors, you may wonder why they’ve partnered. Allwinner only provides WiFi and Bluetooth tablets with their own processors, so partnering with Qualcomm allows then to […]
Wi-Fi CERTIFIED ac Wave 2 Products Support MU-MIMO, 160 MHz Channels, and More
802.11ac WiFi is now found in many routers and devices, and the Wi-Fi alliance has so far certified close to 3,000 “Wi-Fi CERTIFIED ac” products. I understand that certification is not mandatory, but if you want to make sure a device works well, the certification at least means the devices have been tested for interoperability, security and application specific protocols, and found to work in a satisfactory manner. Now the Wi-Fi alliance has announced Wi-Fi CERTIFIED ac Wave 2 certification program with the following new requirements: MU-MIMO (Multi-user Multiple Input Multiple Output) in order to send data to multiple devices at once to improve overall network efficiency and throughput 160 MHz channels support (not only 80 MHz) potentially doubling transmission speeds Four spatial streams instead of just three spatial streams. Extended 5 GHz channel support by adding more channels in the 5 GHz to reduce interference and congestion. Currently the […]
WiReboot is a Watchdog Device Rebooting Your Router if the WiFi Connection is Lost (Crowdfunding)
Routers are usually pretty stable devices, but sometimes they still hang, and I think I must reboot my router about 2 to 3 times a year as I lose (Ethernet) connectivity. I’m usually at home, so it’s not really an issue as I can just walk a few meters to manually reboot the router. But if you are often on the go, and have a few WiFi devices such as smoker alarms, smart lights, and other home automation products that you may want to control over the Internet, if WiFi goes down nothing works. Luckily there’s a solution: WiReboot, a small device powered by ESP8266 that will check your WiFi and Internet connection, and automatically restart the router if it fails.Key features of WiReboot: ESP8266 module for 802.11 b/g/n WiFi connection USB – 1x USB input port to connect your router power supply, and 1x USB output to connect to […]
Compulab Fitlet-RM is a Rugged Wide Temperature Fanless mini PC based on AMD A10 Micro-6700T Processor
Among the many Intel Cherry Trail and Braswell mini PCs, it’s nice to see an alternative with AMD processor, and after their Fitlet-H and Fitlet-iA10 mini PCs powered by AMD A10 Micro-6700T quad core processor, Compulab is back with two rugged models based on the processor, and supporting a wide temperature range, with namely Fitlet-RM-iA10 and Fitlet-RM-XA10 LAN mini PCs. Fitlet-RM specifications: SoC – AMD A10 Micro-6700T 64 bit quad-core processor up to 2.2 GHz with AMD Radeon R6 Graphics (4.5 W TDP) System Memory – Up to 8 GB DDR3-1333 (1x SODIMM) Storage – mSATA up to 1 TB (SATA 3.0 6 Gbps); micro SD/SDXC slot up to 25 MB/s Display – 2x HDMI 1.4a ports Audio – S/PDIF 7.1+2 channels in/out + stereo line-out/line-in/mic + HDMI audio Connectivity Fitlet-RM-XA10 LAN – 4x Gigabit Ethernet ports (Intel I211), 802.11 b/g/n WiFi Fitlet-RM-iA10 – 2x Gigabit Ethernet ports, 802.11 b/g/n/ac […]
Review of Vorke V1 mini PC Powered by Intel Celeron J3160 Processor
After checking out Vorke V1 mini PC hardware in the first part of the review, it’s now time to publish the review starting with system information, benchmarks, and user testing. The device competes with similarly priced devices based on Intel Atom x7 processor such as Voyo V3 and Beelink BT7, so I’ll also include some comparisons to those in the review. Setup and System Information I connected USB keyboard and mouse, an Ethernet cable, HDMI and VGA cables to check dual display support, as well as the power supply. I did not connect my USB 3.0 hard drive since, I’ve already fitted the mini PC with an internal 1TB hard drive. Pressing on the large power button on the top of the device will boot it, and after a few seconds, you’ll get to go through Windows 10 setup by first accepting the EULA. The next steps are Custom or […]
Stress Testing Windows mini PCs with OCCT Overclock Checking Tool
I’m mostly a Linux user, but the marketplace has chosen Windows 10 as its preferred operating systems for mini PCs, so I’ve been reviewing fanless (or not) mini PCs running Windows 10 for around two years since Intel decided to provide low cost and low power processors. I normally run some benchmarks such as PCMark 8 or 3DMark, as well as typical user tasks, while monitoring CPU temperature and throttling using HWInfo64 utility, but those benchmarks are not really pushing the device to its limits. However, I’ve just learned out about OCCT “Overclock Checking Tool” that’s just doing that, and installed OCCT 4.4.2 on Vorke V1 to check it out. The tool has four taps: CPU: OCCT, CPU: Linpack, GPU: 3D, and Power Supply to stress test different part of the system. I just let it run for over 3 hours after pressing the ON buttons, and you can see […]