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Xcrhom T4S Tasmota outdoor wifi smart socket

February 19, 2025

Xcrhom T4S WiFi outdoor smart socket features power meter function, Tasmota open-source firmware

ESPHome is the favorite open-source firmware of Smart Home devices, but Tasmota is another option that’s been available for many years. We’ve just seen fewer products based on Tasmota (previously Sonoff-Tasmota) in recent years, but it recently showed up on a credit card-sized quad relay board, and I’ve just come across Maker Go’s Xcrhom T4S WiFi Outdoor Smart Socket that also ships with Tasmota firmware and sells on AliExpress for $24.88 shipped. The Xcrhom T4S exposes two sockets with dust and rainproof covers to be used safely outdoors, integrates a power meter, and the Tasmota firmware enables MQTT support, Home Assistant compatibility, and support for Amazon Alexa and Google Assistant. Xcrhom T4S specifications: Two EU sockets Max load – 3680W in total (16A x 230V) Rated Current – Up to 16A in total Power Input – 100 to 240V AC 50Hz Wireless – 2.4 GHz 802.11b/g/n WiFi 4; Tx power […]

Credit card-sized ESP32 quad relay board

February 1, 2025February 1, 2025

Credit card-sized quad relay board runs Tasmota firmware on ESP32 module (Crowdfunding)

The “ESP32 IoT Relay Board” is a credit card-sized ESP32 board with four small 250VAC/30VDC 7A relays that runs Tasmota open-source firmware and supports Alexa & Google Assistant for voice control. There are so many ESP32-based relay boards on the market that I don’t usually feel the need to cover new ones, but Igor Mileshin’s ESP32 IoT Relay Board is smaller than most so I thought it might be interesting to some. The smallest quad-channel relay board I’ve seen so far is the one by Seeed Studio using an STM32 MCU and solid-state relays that measures just 60 x 40mm, but the relays only support up to 2A. ESP32 IoT Relay Board specifications: Wireless module – ESP32-WROOM-32D SoC – Espressif ESP32-D0WD dual-core Tensilica LX6 processor @ 240 MHz Storage – 32Mbit SPI flash Connectivity – Wi-Fi 802.11 b/g/n up to 150 Mbps, Bluetooth 4.2/5.x LE Relays 4x “industrial-grade” relays supporting […]

SONOFF iHost Smart Home Hub enables local control of SONOFF, Tasmota, Matter home automation devices

SONOFF iHost is a Smart Home Hub that enables local control of SONOFF smart switches, lightbulbs, Zigbee sensors, and so on without having to require a connection to the cloud (e.g. eWelink). Future software upgrades will also add more devices such as the ones flashed with Tasmota firmware and any device compatible with the Matter IoT protocol. The gateway is based on either a Rockchip RV1109 SoC with 2GB RAM or a Rockchip RV1126 with 4GB RAM and offers 10/100M Ethernet, WiFi, Bluetooth LE, and Zigbee 3.0 connectivity, as well as a USB 2.0 port to allow for more connectivity. SONFF iHost Smart Home Hub specifications: SoC and Memory Rockchip RV1109 dual-core Arm Cortex-A7 @ 1.5 GHz with RISC-V MCU @ 400 MHz, 2D graphics engine, 1.2 TOPS NPU, 5MP H.264 and H.265 hardware video decoder and encoder, and 2GB DDR4 Rockchip RV1126 quad-core Arm Cortex-A7 @ 1.5 GHz with […]

October 5, 2022October 5, 2022

RelayFi – A Tasmota compatible 4-channel relay board (Crowdfunding)

CoreData Global, a Singapore-based research and development firm, has just introduced the RelayFi 4-channel relay board based on ESP32 and compatible with Tasmota open-source firmware, as well as Espressif’s ESP RainMaker cloud and ESP-NOW networking API. RelayFi is fitted with an ESP32-WROOM-32D WiFi and Bluetooth module, four relays capable of handling a load of 250 VAC/7A or 30 VDC/10A, and EL817C Optoisolators for safety. The board also comes with CH340C USB to TTL chip for programming, an I2C header for expansion, and some jumpers for relay selection. RelayFi specifications: Wireless module – Espressif Systems’ ESP32-WROOM-32D module with ESP32 dual-core Tensilica microcontroller, 32Mbit SPI flash, Wi-Fi 802.11 b/g/n up to 150 Mbps, Bluetooth 4.2 LE, and PCB antenna Relays 4x relays up to 250VAC/7A or 30VDC/10A 4x EL817C optocouplers for safety 4x relay status LEDs Screw terminals Relay selection jumper USB – 1x micro USB port for power and programming via […]

November 10, 2021

Ikea PM2.5 air quality sensor’s ESP8266 hack adds WiFi, MQTT, and Tasmota support

Ikea VINDRIKTNING PM2.5 air quality sensor functionality can be augmented with an ESP8266 WiFi board or module, and open-source firmware adding MQTT, or the popular Tasmosta firmware for more features. Out of the box, Ikea air quality sensor simply shows green (good), yellow (ok), and red (not good) colors to indicate the level of pollution with PM2.5 levels. But Sören Beye (Hypfer), who also happens to have developed Valetudo firmware for smart vacuum cleaners, has added a Wemos D1 Mini board to his sensor and developed open-source firmware with MQTT support. You’ll need to open the air quality sensor, and solder three wires between the ESP8266 board and the 5V, GND, and Tx (data) pin from the Ikea VINDRIKTNING mainboard. After flashing the firmware, you still get the original LED indicator plus PM 2.5 air quality data sent over MQTT and WiFi. The update system supports Home Assistant Autodiscovery with […]

November 1, 2021

10-channel floor heating valve controller supports Tasmota, MQTT, Home Assistant

Voltlog has designed an open-source hardware floor heating valve controller powered by an ESP32 WiFi module making it compatible with Tasmota open-source firmware, and by extension MQTT protocol and Home Assistant automation framework. The board can control up to 10 valves triac controlled outputs and spring connectors for a floor home heating system, and also offers a one-wire srping connector, an I2C header, and safety features with two fuses, although it’s obviously not UL nor TUV certified. Voltlog decided to design his own board instead of buying off-the-shelf solutions because of the high price of such products and the lack of open-source firmware for integration into a home automation server powered by Home Assistant. You can flash firmware to the ESP32 either through a VoltLink USB to Serial converter or you can use your own USB to serial converter module through the on-board JST-SH 1.0mm pitch 6 pin connector. This […]

September 27, 2021November 15, 2022

ZB-GW03 ESP32-based Ethernet Zigbee gateway works with Tasmota firmware

ZB-GW03 is an Ethernet Zigbee Gateway compatible with eWelink mobile app and with a design similar to SONOFF ZBBridge gateway but replacing ESP8266 SoC by ESP32 SoC, and adding an Ethernet port. The ZB-GW03 gateway is apparently based on the same Silicon Labs EFR32MG21 Zigbee Arm Cortex-M33 chip and has been hacked to run Tasmota open-source software for people preferring more flexibility and/or integration with OpenHAB or Home Assistant open-source home automation frameworks via Zigbee2MQTT. ZB-GW03 gateway specifications: Main MCU – Espressif Systems ESP32 dual-core Tensilica TX6 processor @ 240 MHz with WiFi 4 and Bluetooth connectivity Zigbee MCU – Silicon Labs EFR32MG21 Arm Cortex-M33 MCU @ 80 MHz with Zigbee 3.0 connectivity Connectivity 10/100M Ethernet, WiFi, and Bluetooth via ESP32 Zigbee 3.0 via Silabs MG21 MCU with support for 128 nodes, up to 200+ meter range One 2.4 GHz Zigbee antenna One 2.4 GHz PCB antenna for WiFi Misc […]

Sonoff Zigbee Bridge & Tasomota Home Assistant

July 27, 2020February 21, 2022

Sonoff Zigbee Bridge Now Supports Tasmota Firmware, Home Assistant, Zigbee2Tasmota

Sonoff ZBBridge (aka Sonoff Zigbee Bridge) WiFi to Zigbee gateway was launched a few months ago for $16.90 plus shipping, and it’s now also listed on Banggood for $17.99 shipped. It allows users to control Zigbee devices connected to the gateway using the eWelink mobile app used with other Sonoff devices. But many people like to run Tasmota firmware on their Sonoff devices since it’s open-source and provided more flexibility such as integration with Home Assitant or Domoticz. There was already support for Zigbee in Tasmota at the time but only for Texas Instruments SimpleLink CC253x Zigbee MCU’s, and Sonoff ZBBridge is made of an ESP8266 WiSoC and a Silicon Labs EFR32MG21 Gecko Series 2 Cortex-M33 Zigbee microcontroller. So I just suspected that eventually, Sonoff Zigbee Bridge could support Tasmota open-source firmware but that would take some time… It took about four months. Not too bad. It started in the […]