wifi News - Page 37 of 113 - CNX Software

August 19, 2022 by Jean-Luc Aufranc (CNXSoft) - No Comments

Sparrow is a sensor-to-cloud LoRaWAN solution based on STM32WLE5 microcontroller

Blues Wireless Sparrow is a LoRaWAN solution designed to connect a group of low-cost, low-power device sensors for shared data backhaul to the cloud. It is comprised of STMicro STM32WLE5 LoRa-based sensors whose data is then routed through the company’s Notecard-powered WiFi or cellular gateway and ultimately a cloud app hosted on AWS, Microsoft Azure, or other IoT cloud platforms. The company claims the Notecard and Sparrow solutions ease the development of IoT networks in a way that was previously only available “to sophisticated engineering firms”, and now Blues Wireless supports cellular, WiFi, and LPWAN technologies. Let’s have a look at the “Sparrow Essentials” board specifications first: Wireless SoC – STMicro STM32WLE5+ Arm Cortex-M4F microcontroller @ 48MHz with 256KB Flash, 64KB of SRAM, Semtech SX126x LoRa transceiver I/Os Breadboard compatible 2.54mm headers with digital and analog I/O, I2C, UART, and SPI Qwiic Connector Debugging – JTAG (SWD capable) debug jack […]

August 17, 2022February 3, 2023 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

Nordic Semi nRF7002 is a dual-band WiFi 6 companion IC for nRF52, nRF53, and nRF91 wireless chips

Nordic Semiconductor nRF7002 dual-band WiFi 6 companion chip is the first WiFi chip from the company and is designed to add Wi-Fi connectivity to solutions based on nRF52840 and nRF5340 wireless SoCs, and nRF9160 cellular IoT SiP, as well as non-Nordic host microcontrollers. The nRF7002 also adds Wi-Fi-based locationing (SSID sniffing of local Wi-Fi hubs) when used alongside Nordic’s existing products, and the launch means Nordic is now one of the rare companies offering chips for Bluetooth, 802.15.4 (Matter/Thread), Wi-Fi, and cellular IoT (NB-IoT, LTE Cat M). This was made possible with the acquisition of the development team, core Wi-Fi expertise, and Wi-Fi IP assets of Imagination Technologies Group in 2020. Nordic Semi nRF7002 key features specifications: Complies with 802.11a/b/g/n/ac/ax 2.4 GHz and 5 GHz dual-band Wi-Fi 6 Station (STA) 1 Spatial Stream (SS) 20 MHz channel bandwidth 64 QAM (MCS7), 86 Mbps PHY throughput OFDMA (Downlink and Uplink) BSS […]

August 12, 2022October 30, 2022 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

SONOFF NSPanel Pro Android control panel doubles as WiFi & Zigbee Smart Home gateway

ITEAD has introduced the SONOFF NSPanel Pro Smart Home control panel running Android 8.1 on a Rockchip PX30 quad-core Cortex-A35 processor and acting as a Smart Home gateway thanks to an 802.15.4 radio for Zigbee 3.0, and 2.4 GHz 802.11b WiFi for connectivity. The NSPanel Pro follows the ESP32-powered SONOFF NSPanel introduced just last year but offers much more flexibility with Android, 2GB RAM, 8GB eMMC flash, and also offers a slightly larger 3.95-inch capacitive touchscreen display with 480×480 resolution. SONOFF NSPanel Pro specifications: SoC – Rockchip PX30 quad-core Cortex-A35 processor with Arm Mali-G31 GPU System Memory – 2GB DDR3 Storage – 8GB eMMC 5.1 flash Display – 3.95-inch capacitive touchscreen color TFT display with 480×480 resolution Audio – 1W speaker, digital microphone for two-way communication (intercom) Connectivity 802.15.4 radio with Zigbee 3.0 support. Matter and BLE Mesh scheduled for 2023 2.4 GHz 802.11b WiFi Sensor – Light sensor for […]

August 8, 2022 by Jean-Luc Aufranc (CNXSoft) - 16 Comments

ESP-WIFI-CSI detects humans with WiFi signals only, no sensor needed

Espressif ESP-WIFI-CSI software relies on the disturbance in the force WiFi signals between one or more ESP32 boards and a router to detect whether humans are present in a room, or even indoor positioning, providing a cost-effective solution since no sensors are needed. Channel state information (CSI) leverages carrier signal strength, amplitude, phase, and signal delay indicators to reveal the signal scattering, reflection, and power attenuation phenomena that occur with the carrier as the transmission distance changes. This is typically used to measure the channel status of the wireless network in Wi-Fi communication, but it’s also possible to analyze and study the changes in CSI to detect movements such as walking and running of people or animals, and Espressif claims it can also capture subtle movements caused by small movements such as breathing and chewing of people or animals in a static environment. ESP-WIFI-CSI implementation works with all ESP32 series […]

August 7, 2022August 8, 2022 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

TTGO T4 ESP32 board features 2.4-inch color display, IP5306 battery charging IC

2.4-inch display ESP32 board battery charging

LilyGO has launched yet another ESP32 board with an integrated color display. The TTGO T4 offers a 2.2-inch or 2.4-inch color display, LiPo battery support, but in contrast to many other boards from the company, features a battery charging circuitry based on Injonic IP5306 “fully-integrated power bank system-on-chip with 2.1A charger, 2.4A discharger”. The WiFi and Bluetooth IoT board is also equipped with 4MB flash, a MicroSD card socket, 8MB PSRAM, a 20-pin GPIO header and a 5-pin I2C connector for expansion, and a few buttons for programming and user control. TTGO T4 v1.3 specifications: Wireless MCU – Espressif Systems ESP32 dual-core Tensilica LX6 microcontroller @ up to 240 MHz with 520 KB SRAM, wireless connectivity RAM – 8MB SPRAM (ISSI PN18S32) Storage – 4MB SPI NOR flash, MicroSD card slot Connectivity (ESP32) 2.4 GHz 802.11 b/g/n Wi-Fi 4 Bluetooth 4.2 BR/EDR and Bluetooth LE 3D antenna and u.FL connector […]

August 4, 2022September 5, 2022 by Jean-Luc Aufranc (CNXSoft) - 15 Comments

Inexpensive, Snapdragon 410-based “4G LTE WiFi Modem” made to run Debian 11

Some ultra-compact 4G LTE wireless routers housed in what looks like a largish USB dongle are based on Qualcomm Snapdragon 401 (MSM8916) quad-core Cortex-A53 processor and have been hacked to run Debian 11 with Linux 5.15 instead of the pre-loaded Android OS. Soon after Extrowerk had purchased a ~$20 “4G LTE WiFi modem” USB dongle, he noticed it would show as “Android” when connected to his PC. It also turned out that Chinese hacker HandsomeYingYan had already done some work on the device modding the lk2nd bootloader and the Linux kernel for the OpenStick project for “mainline Linux on msm8916-based 4G USB modem”, and documented his work (in Chinese) to run Debian 11 on the “4G USB WiFi Modem” pictured below. Let’s go through some of the specifications of the said wireless router: SoC – Qualcomm Snapdragon 410 (MSM8916) quad-core Arm Corte-A53 processor with System Memory – 512 MB RAM […]

August 1, 2022 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

$52 7.5-inch E-paper display connects to ESP32 boards

LILYGO 7-5 inch E-paper Display with T5 ESP32 board

So far LILYGO’s ESP32 boards with an E-Paper display such as the TTGO T5 or Mini E-Paper Core featured smaller displays from 1.02-inch to 2.9-inch. But the company is now offering a larger 7.5-inch display that works with most of its T5 boards excluding the one used with a 4.7-inch display. The black and white e-paper display offers a resolution of 800 x 480 pixels, is Arduino programmable and backward compatible with earlier T5 E-paper solution, and should be one of the most cost-effective to way to make a wireless E-paper display. LilyGO 7.5-inch E-paper display specifications: Panel SKU – DKE DEPG0750_U790F3 (See PDF datasheet. note non-secure link so your browser may complain) Size – 7.5-inch diagonal Resolution – 800 x 480 pixels (124 DPI) Active area – 163.2 x 97.92mm Pixel pitch – 0.204 x 0.204 mm Host interface – SPI Dimensions – 170.2 x 111.2 x 1.2 mm […]

July 27, 2022January 9, 2023 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

T-Display-S3 board offers ESP32-S3 WiSoC, 1.9-inch color LCD, and LiPo battery support

LilyGO T-Display-S3 is an ESP32-S3 WiFi and Bluetooth LE IoT development board with a 1.9-inch color LCD and support for LiPo batteries that follows the company’s T-QT ESP32-S3 board with a tiny 0.85-inch display introduced earlier this month. The new board offers the same layout as the previous T-Display RP2040 or ES32 boards, but the 1.14-inch display has been replaced with a larger 1.9-inch display that covers most of the board, and thanks to the ESP32-S3 microcontroller, gains proper Bluetooth 5.0 support, as well as vector instructions for AI acceleration. T-Display-S3 specifications: Wireless MCU – Espressif Systems ESP32-S3R8 dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration, 512KB RAM, 8MB PSRAM, wireless connectivity Storage – 16MB flash Connectivity via ESP32-S3 2.4 GHz 802.11 b/g/n Wi-Fi 4 with 40 MHz bandwidth support Bluetooth Low Energy (BLE) 5.0 connectivity with long-range support, up to 2Mbps data rate. […]