UL-Certified Smart Plug TP-Link Kasa
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UL-Certified TP-Link Kasa Smart Plug with Dual Outlet Sells for $19.99 (Promo)

WiFi smart sockets to control home appliances have been around for a few years, and one of my favorite companies is Sonoff as they offer a variety of affordable smart plugs pre-loaded with eWelink firmware and compatible with open-source firmware like Tasmota and ESPurna. The company is also attentive to safety. communicate issues with customers, and recently wrote a post entitled “Safety is our responsibility” where they detail all steps taken to make sure their mains connected device sare safe to use. Sadly that does not include safety certifications like UL/ETL, or TUV which may have implications for your home insurance depending on where you live, and for peace of mind, it’s always good to have a third verify your design for safety. Which brings me to the main point of this point, as a UL-certified dual-outlet smart socket, namely TP-Link Kasa Smart Plug, is currently on sale for $19.99 […]

BME680 air quality sensor
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ESPurna ESP8266 Automation Firmware Gets Support for BME680 Sensor’s Precise Indoor Air Quality Measurements

Bosch BME680 is a 4-in-1 air quality sensor measuring relative humidity, barometric pressure, ambient temperature, and gas (VOC) levels. It’s found in boards such as STM32 based Metriful Sense or Nordic Thingy:91, and Bosch Sensortec published an Arduino library based on “Bosch Sensortec Environmental Cluster (BSEC) Software” to provide precise calculations temperature, humidity, pressure, and indoor air quality (IAQ). BSEC proprietary algorithms can provide indoor air quality data as good as more expensive CO2 sensors according to a recent presentation by the company. Max Prokhorov, lead ESPurna maintainer, and Rui Marinho noticed none of the popular open-source ESP8266 automation firmware including ESPurna, Tasmota, and Esphome supported BME680 sensor just yet. So they decided to work together to add BME680 sensor support via BSEC library to ESPurna firmware, and now it’s very easy to use as you just need to define BME680_SUPPORT=1 before compiling the firmware. You’ll find the now-merged pull […]

Graperain Samsung, Rockchip RK3588, and Qualcomm CPU modules, SBCs, and carrier boards
EFR32xG22 Wireless Gecko Starter Kit
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$99 EFR32xG22 Wireless Gecko Starter Kit Offers Low-Cost Zigbee Development Platform

Silicon Labs has just launched a low-cost Bluetooth, Zigbee, and proprietary wireless development kit with the $99 EFR32xG22 Wireless Gecko Starter Kit (WSTK). This WSTK includes two +6 dBm radio boards, matching network, and PCB antennas for +6 dBm output power in the 2.4 GHz band, as well as on-board J-Link debugger. Previously you had to purchase the $479 EFR32xG21 Wireless Gecko Starter Kit to get access to the Zigbee SDK in order to get started with development, and the new starter kit makes it possible to get access to the same software resources and documentation for around $100. EFR32xG22 Wireless Gecko Starter Kit (SLWSTK6021A) content, key features & specifications: BRD4001A Wireless Starter Kit Mainboard WiSoC – Wireless Gecko Series 2 Arm Cortex-M33  @ 80 Mhz Display – Low-power 128×128 memory TFT LCD Connectivity – Ethernet port USB – 1x Micro USB port for programming and power  Debugging Advanced Energy […]

Sonoff SNZB Zigbee Sensors Switch
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Sonoff SNZB Zigbee Sensors and Switches Launched for under $10

ITEAD had started to expand from WiFi and RF433 capable Sonoff home automation devices into Zigbee smart home solutions in recent months with the launch of products such as Sonoff ZBBridge WiFi to Zigbee gateway and a TI CC2531 based Zigbee USB dongle preloaded with firmware compatible with Zigbee2MQTT. But so far, they had only one Zigbee node, namely Sonoff BASICZBR3 Zigbee power switch. More options are now available with the launch of four Sonoff SNZB Zigbee sensors and switches working with the company’s ZBBridge. Key features of the four new Zigbee sensors & switches: SNZB-01 Zigbee wireless switch Touch button with single, double press and long press support Battery – 3V (CR2450) Dimension – 43x43x16mm SNZB-02 Zigbee temperature & humidity sensor Unnamed temperature and humidity sensor Battery – 3V (CR2450) Dimension – 43x43x14mm SNZB-03 Zigbee motion sensor Built-in PIR sensor with 6m range and 110°viewing angle. Battery – 3V […]

Sonoff BASICZBR3 TI Z-Stack 3.0 Zigbee
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Zigbee Firmware News – TI Z-Stack 3.0 Zigbee for CC2530 & ptvo Zigbee FW Configuration Tool

We’ve been writing about Zigbee more in recent months with either product announcements such as Sonoff ZBBridge WiFi to Zigbee gateway, and open-source software updates such as Tasmota support for Zigbee connectivity. We’ve recently been tipped about Zigbee-related news, namely TI Z-Stack 3.0 Zigbee router firmware port to Sonoff BASICZBR3, and ptvo Zigbee Configurable Firmware v2.4 GUI tool designed to create alternative Zigbee switch and router firmware for TI CC253x based modules and devices TI Z-Stack 3.0 Zigbee Router Firmware on Sonoff BASICZBR3 Kirovilya, a well-known open-source developer and founder of ioBroker open-source home automation software, has ported TI Z-Stack 3.0 Zigbee router firmware to CC2530 and tested it on Sonoff BASICZBR3 with DS18B20 waterproof temperature sensor. This is significant as Sonoff BASICZBR3 is only shipped with TI Z-Stack Home 1.2 Zigbee router firmware and I was told no one else had ported TI Z-Stack 3.0 Zigbee to CC2530 chip […]

Sonoff ZBBridge
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Sonoff ZBBridge WiFi to Zigbee Gateway Launched for $16.90

Since the end of last year, ITEAD has introduced several Zigbee Sonoff products such as Sonoff Basic R3 Zigbee, but so far customers had to rely on third-party hardware for the gateway, and they very recently launched a CC2531 Zigbee USB dongle to ease the task. But now the company’s just-launched Sonoff ZBBridge WiFi to Zigbee gateway allows people to control compatible Zigbee devices using eWelink mobile app. Sonoff ZBBridge specifications: Wireless Connectivity – 2.4 GHz 802.11b/g/n WiFi 4 and Zigbee 3.0 Power Input – 5V/1A Dimensions – 62 x 62 x 20 mm (PC V0) Weight – 35 grams Temperature Range – -10 to 40°C The gateway is working with BASICZBR3 Smart Switch, S31 Lite zb Smart Plug, and the upcoming SNZB-01 Wireless Switch, SNZB-02 Temperature & humidity sensor, SNZB-03 motion sensor, and SNZB-04 wireless door/window sensor. It will also work with other smart devices certified by the ZigBee […]

Rockchip RK3568, RK3588 and Intel x86 SBCs and SoMs in 2025
ITEAD CC2531 Zigbee USB Dongle
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$4 ITEAD CC2531 Zigbee USB Dongle Works with Zigbee2MQTT Out of the Box

Some of ITEAD Studio’s Sonoff home automation devices include Zigbee connectivity with for instance Sonoff BASICZBR3 smart switch or a version of Sonoff S31 smart socket with integrated Zigbee. Those devices usually work via a Zigbee enabled gateway that could be a router, Raspberry Pi SBC, or mini PC, which ITEAD did not offer so far. But to help people making their own Zigbee gateway the company is now selling a low-cost ($3.99) CC2531 USB dongle preloaded with CC2531ZNP-Prod firmware (Zigbee coordinator firmware), and compatible with Zigbee2MQTT open-source Zigbee to MQTT bridge once plugged into a PC, Raspberry Pi, or another Linux SBC. ITEAD CC2531 Zigbee USB dongle specifications: MCU – Texas Instruments CC2531F256 Zigbee and IEEE 802.15.4 wireless MCU with 8kB RAM, 256kB Flash pre-loaded with CC2531ZNP-Prod firmware for zigbee2mqtt application Host Interface – USB 2.0 male port Expansion – 8-pin unpopulated header with 8 I/Os Debugging – Debug […]

ESP32 GPS LoRa
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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 […]

Boardcon LGA3576 Rockchip RK3576 System-on-Module designed for AI and IoT applications