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

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, […]

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Two Interesting Projects on Github: Zigbee to MQTT bridge & “Deep Painterly Harmonization”

Hey Karl here. I thought I would try and showcase some GitHub projects that I run into that seem interesting or fun. This week I will start out with 2 projects. Zigbee to MQTT bridge The first one today is a Zigbee to MQTT bridge. Previously we did a couple articles with 433MHz bridges for home automation, a diy RF bridge and one by Sonoff. This bridge is similar but with Zigbee. Unfortunately 433MHz typically have one way communications, and when a message is sent there is no response and the system has to assume the message is received. Zigbee is a 2 way protocol and an acknowledgement can be sent back. The code is moving fast right now and blowing up my GitHub notices. It is a little bit of a mystery on how this works right now with the parts list, but seems to be working for some […]

Khadas Edge2 RK3588S Arm PC
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Sonoff Pow R2 is a Power Monitoring WiFi Smart Switch with Better Accuracy, Safety and Extra Features

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. […]

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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 […]

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$17 Sonoff S31 Wireless Smart Socket Includes Energy Monitoring Function

ITEAD Studio has just launched another Sonoff Smart Home product with Sonoff S31 WiFi smart socket with energy monitoring. Just like Sonoff switches, light bulbs, and their other products, the device can be controlled using eWelink app for Android or iOS, and supports integration with Amazon Alexa, and Google Assistant. It should be noted that the company only provide a US plug version for now, and so far, there’s no Wiki link, so while it’s likely based on ESP8266 or ESP8285 like their other Sonoff devices, it may not be designed to be easily hackable, although I suspect the electronics may be similar to Sonoff POW switch (TBC). Sonoff S31 hardware specifications listed by ITEAD: Voltage Input – 90~264V AC, 50/60HZ Max. Current – 16A Max. Power – 4200W (Note package above reads max load: 220V/10A) Gang – 1x US type with ground Connectivity – 802.11 b/g/n WiFi with support […]

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Review of ITEAD Studio IP66 Waterproof Case for Sonoff Wireless Switches (and Other Boards)

ITEAD Studio recently launched a waterproof enclosure for $2.90 (now at still a decent $3.90), rated IP66, for their family of Sonoff wireless switches, so you can safely use them outdoors protected from rain and dust. The company sent me one sample together with Sonoff RF switch supporting WiFi and 433MHz RF connectivity so that I can test the case, and write a review describing my experience. I’ll focus on the waterproof since this is the main focus of this review, and beside Sonoff RF, you can also use Sonoff basic, various other Sonoff boards (POW, TH10/T16), and even other development boards as we’ll seen below. I’ll be using the stock firmware with eWelink app, but if you prefer alternative firmware like ESPurna or Sonoff-Tasmota, you may want to flash it to your Sonoff now. The waterproog case has two parts, a rubber cord, two waterproof PG7 connectors, and four […]

Station M3 Geek PC
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Sonoff Wireless Switch Family Gets a $3 IP66 Waterproof Enclosure

ESP8266 powered ITEAD Studio Sonoff wireless switches have been popular because they are inexpensive, highly customizable thanks to work from the community leading to open source projects such as ESPurna and Sonoff-Tasmota, and come fully packaged so you don’t need to make your own case for it. That works well for indoor projects, but if you needed to control outdoors lights, gate, water pump, etc… you had to protect the device from humidity/rain. That may not be necessary anymore as the company is now selling Sonoff Basic with an IP66 waterproof enclosure for $7.75, or the case only for $2.90.Sonoff waterproof case: Ingress Protection Rating – IP66 Material – PC V0 Dimensions – 132.2 x 68.7 x 50.1mm (See details) Weight – 145.0g IP66 rating is not suitable for prolonged immersion, but it should be good to protect against rain or high humidity. The box ships with two standardized PG7 […]

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Tronxy X3S 3D Printer Review – Part 2: Upgraded Heatbed and RAMPS Board

Karl here. So the bed I mentioned in the first part of Tronxy X3S review is not very good. It took about 10-11 minutes to heat up to 60 deg Celsius. I also mentioned I was going to upgrade the board to a RAMPS board. Today we are going to look at both these upgrades. New Heated Bed I can take no credit for this one but I wanted to pass this along. Folger tech sells a 12v 280w heated bed stick on pad. I picked this up for $20, but is now $22. In order to do this upgrade you will need a MOSFET, 12V/30A power supply, and of course the pad above. Super easy installation. Remove the bed and stick on the self adhesive pad centered. Replace the power supply with new one. Should be self explanatory. In order to power this bed a MOSFET is needed. A […]

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