$4 ITEAD CC2531 Zigbee USB Dongle Works with Zigbee2MQTT Out of the Box

ITEAD CC2531 Zigbee USB Dongle

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 […]

Sonoff Micro WiFi Smart USB Adapter Sells for $5

Sonoff Micro

ITEAD Studio Sonoff family of WiFi-powered home automation devices is convenient to use with voice commands or mobile apps, and for those who want to more control over what runs in their network, Sonff devices are usually compatible with open-source firmware such as Sonoff-Tasmota. We’ve very recently written about Sonoff D1 smart dimmer switch, but the company also launched Sonoff Micro WiFi smart USB adapter that allows you to control USB powered devices. Sonoff Micro specifications: Power Input – 5V/2.5A USB type-A male Output – 5V/2.5A USB type-A female; BC 1.2 charging, max 1A output for charging Connectivity – 802.11 b/g/n WiFi 4 @ 2.4 GHz Misc – Power and WiFi LED’s, switch button Dimensions – 45 x 30.5 x 26 mm (PC V0 flame-retardant material) Weight – 17 grams Certifications – CE, FCC There’s no integrated power supply, so Sonoff Micro targets specifically USB power devices such as USB […]

Sonoff MINI & R3 Smart Switches Support a DIY REST API

Sonoff MINI

ITEAD Studio’s Sonoff are low-cost wireless switches based on ESP8622/ESP8285 WiSoC, and supporting WiFi and/or 433 MHz connectivity. They usually come with a firmware that allows users to control them with eWelink app for Android or iOS. But many people will install alternative open source firmware such as Sonoff-Tasmota or ESPurna to get more flexibility such as the ability to use MQTT. But the company’s latest models, including Sonoff MINI and R3 series, implement a “DIY” REST API that allows you to control the device, or flash the firmware over a LAN connection. Sonoff MINI two-way Smart Switch Sonoff MINI is designed to be installed behind existing wall-mounted light-switches and wall-mounted power-sockets. Specifications: Terminal blocks with 6x inputs/outputs: N/L Inputs –  AC 100-240V 50/60Hz 10A Max N/L Outputs – AC 100-240V 50/60Hz 10A Max S1/S2 – Designed to optionally connect a standard on/off switch Connectivity – Wi-Fi 4 – 802.11 […]

Sonoff S26 Smart Socket Mini Review & Teardown

Sonoff S26 Fan Control

ITEAD Studio very recently launched their Sonoff S26 WiFi Smart plug as a more compact and cost effective upgrade to their Sonoff S20 smart sockets, and which comes in 6 different versions for China, Australia, the United Kingdom, the United States, Europe type F for Germany, Austria, the Netherlands, Sweden, Finland, Norway, Portugal, Spain and Eastern Europe, and  Europe type E for France, Belgium, Poland, Slovakia, the Czech Republic, Tunisia and Morocco. You can find the one that suits you most on World Standard website. I was interested in getting the device, mostly to check the hardware design, so the company sent me one sample to try out. Sonoff S26 Unboxing Sonoff S26 comes is a white package with Sonoff branding. I received the US type plug (S26B model) which includes a ground pin on both side, so it’s not suitable for most sockets here in Thailand that do not […]

My Sonoff TH16 Wireless Switch is Dead – Postmortem Analysis

Insect-destroys-Sonoff-Switch

Back in November 2016, I connected Sonoff TH16 WiFi switch to my water pump, and since then it worked fairly well, except for the occasional “offline error” in eWelink app, which was usually solved with a power cycle. But in the last couple of days, I noticed the pump would not start at the set time, and I could not control it using the Android app either, even after turning on and off the power. So I took it out to have a look, and one component indeed burnt. ITEAD Studio released the schematics in the Wiki, and the dead component is connected to a GND as well as to a transistor, so it must be R2 4.64 Ohm resistor [Corrected from R3 resistor after checking board with multimeter]. But what may have caused this? Resistors burn because too high of a current flows through them. We often have micro […]

Sonoff S26 WiFi Smart Plug Works in All/Most Countries, Sells for under $10

Sonoff-s26-wifi-smart-plug-europe-usa

One recurring issue with smart plugs / sockets is that they are often designed with a specific prong type, so if you want to use them in our country you may have to add an adapter, which may not be ideal, since the socket may fall off or have bad contact. Sonoff S26 WiFi smart plug solves that issue as ITEAD Studio made it available in six different versions for China, Australia, United Kingdom,  Europe type F, Europe type E, and the United States. Sonoff S26 specifications: Standard – US/ UK/ CN/AU/ EU(type F/E) Power supply – 90V~250V AC @ 50/60Hz Max. Current – 10A Max power – 2200W Connectivity – 802.11.b/g/n 2.4G WiFi with WEP/TKIP/AES encyprtion, WPA-PSK/WPA2-PSK security Dimensions – 104 x 55 x 73 mm (Fire Retardant ABS enclosure) Weight –  130 grams Temperature Range – 0ºC-40ºC Humidity-  5%-90%RH, Non-condensing Certification – CE Just like other Sonoff devices, […]

Sonoff Pow R2 is a Power Monitoring WiFi Smart Switch with Better Accuracy, Safety and Extra Features

Sonoff-POW-R2

ITEAD Studio released several wireless switches / sockets with power monitoring capability over the years. Recently they company launched Sonoff S31 smart socket that plugs directly into your AC socket and does not require any wiring, but earlier they introduced Sonoff Pow that is meant to be connected directly into your circuit via terminals. ITEAD has now launched an upgrade to the latter  – Sonoff Pow R2 – with many of the same features, including support for eWelink, but offering 99% measurement accuracy, overload protection defined by the user, and various other features like the ability to export data. Sonoff Pow R2 (Revision 2) specifications: WiSoC – Espressif ESP8266 (TBC) Connectivity – 802.11 b/g/n WiFi with WPA/WPA2 support Voltage Range – 90 to 250 VAC input Max Current – Up to 16A Max Power – 3,500 Watts Terminals – 6 terminal for mains and load’s ground, live and neutral signals. […]

Sonoff S31 Smart Socket Review – Power Consumption Monitoring with eWelink Android App

Today we are looking at the Sonoff S31. It is another device in the Sonoff line by ITEAD Studio. Similar to the Sonoff POW, you can see power usage but on the S31 you can keep historical data up to 100 days. This time around I am using it with the standard firmware, and will not be flashing the popular MQTT Tasmota firmware. Specifications per ITEAD website: Max. Current: 16A Voltage Input: 90~264V AC, 50/60HZ Wireless Standard: 2.4GHz, 802.11 b/g/n Receive Sensitivity: 802.11b: <-84dBm(11Mbps); 802.11g: <-68dBm(54Mbps) Output Power: 802.11b:16±2dBm; 802.11g:13±2dBm Security Mechanism: WEP/WPA-PSK/WPA2-PSK Encryption: AES/TKIP Working Temp: -20 °C ~ 75 °C Working Humidity: 10%-80% Product Dimensions: 75.7×39.7x32mm Gang: 1 Weight: 135g Certification: FCC (Download) Sonoff S31 Unboxing & Teardown Taking the S31 apart is rather easy but I did not take it fully apart for fear of breaking it. Just pop the power button off the left side. Then […]