SONOFF MINI Extreme (MINIR4) ESP32 WiFi smart switch can fit into most gang boxes


SONOFF MINI Extreme (aka MINIR4) is a ridiculously small WiFi smart switch based on ESP32 wireless microcontroller and designed to be connected to a load such as a light bulb and a wall switch that can be a momentary switch, a door exit switch, an SPDT switch, a latching switch, or even dry contact sensors. The tiny form factor (39.5×33 x16.8mm) enables the WiFi smart switch to fit into various boxes, even the smaller European gang boxes. Just like other SONOFF home automation devices, the MINIR4 works with eWelink mobile app, but it also implements some new interesting features such as the ‘Detach Relay’ mode. SONOFF MINI Extreme (MINIR4) specifications: MCU – Espressif Systems ESP32 dual-core wireless microcontroller Connectivity 2.4 GHz WiFi 4 Bluetooth LE used for pairing Input – 100-240V ~ 50/60Hz 10A Max Output – 100-240V ~ 50/60Hz 10A Max (resistive load) Dimensions – 39.5 x 33 x […]

DROPLET irrigation system works with ESPhome and Home assistant

DROPLET irrigation system

When PricelessToolkit failed to find an affordable (indoor) irrigation system that works with Home Assistant and ESPHome, he built the DROPLET board based on ESP32 wireless SoC and supporting up to five micro-pumps and soil moisture sensors. The board also comes with switches to manually control the pump, a built-in DS18B20 temperature sensor, a buzzer, and a I/O header to connect an expansion header for relay control, I2C, GPIOs, and an external DS18B20 temperature sensor. DROPLET specifications: Wireless module – ESP32-S with ESP32 dual-core 32-bit microcontroller @ 240 MHz with 2.4 GHz WiFi and Bluetooth connectivity, 4MB SPI flash Display – I2C header for 5V/3.3V OLED display Pump interfaces – 5x 2-pin connectors for micropumps Sensors and sensor interfaces DS18B20 temperature sensor 5x 3-pin connectors for soil moisture sensors; pulled low with a 1 MΩ resistor. Expansion – 2x 16-pin right-angle female header with GPIOs, UART, 5V, and GND Debugging […]

b-parasite Bluetooth LE plant sensor gets Zigbee support

Zigbee Plant Sensor

rbaron’s b-parasite is an open-source hardware Bluetooth LE plant watering sensor that can measure soil moisture and ambient temperature/humidity/light and works with ESPHome, Home Assistant, or any macOS or Linux platforms including the Raspberry Pi boards. It is based nRF52840 multi-protocol wireless microcontroller, so stanvn decided to add Zigbee support to the b-parasite through the “Zigbee Plant Sensor” firmware based on the Nordic Semi nRF5 SDK for nRF52 series of SoCs and working with Zigbee2MQTT. Let’s have a look at b-parasite hardware specifications first: Wireless MCU – Nordic Semi nRF52840 Arm Cortex-M4F multi-protocol wireless microcontroller with Bluetooth LE 5.0 and 802.15.4 (Zigbee/Thread) radios, 1024 KB flash, 256KB SRAM Sensors Capacitive soil moisture sensor Sensirion SHTC3 temperature and humidity sensor ALS-PT19 light sensor Power – ~200 mAh CR2032 coin-cell battery estimated to last for a couple of years with readings every 10 minutes The GitHub repository for the board contains the […]

ESPHome compatible ESP32-S2 module offers six 32A latch relays in a DIN Rail enclosure

ESP32-S2 six 32A latch relays

EasySensors “6Gang30AmpsLatchRelayEspHomeReady” (now that’s a product name!) is a DIN Rail mountable, ESP32-S2-based automation device featuring six 32A latch relays and supporting ESPHome open-source framework. The system also comes with two inputs for Dallas temperature sensors, two buttons for manual control of relays, a USB-C port for programming, as well as an external SMA antenna for WiFi connectivity. 6Gang30AmpsLatchRelayEspHomeReady specifications: Wireless SoC – Espressif ESP32-S2 Xtensa single-core 32-bit LX7 microcontroller @ up to 240 MHz with 320 kB SRAM, 2.4 GHz WiFi 4 (Matter-ready) Antenna – Embedded IPX to SMA adapter, 3dBi antenna I/Os 6x 32A latch relays with zero current idle consumption 2x Dallas temperature sensor pins with 5 kOhm pull-up resistors USB – 1x USB Type-C for programming via CP2102 USB to TTL chip Misc 6x control buttons, Reset button 6x status LED’s, 2x status LED’s Input Voltage – 85 to 305V AC Dimensions Board – 147 x […]

SONOFF POW Elite ESP32 WiFi power meter switch handles up to 20A load

SONOFF POW Elite ESP32 Power Meter

SONOFF POW Elite is an ESP32-powered smart power meter switch that can handle up to 20A max load to monitor the power consumption of all appliances in a whole room. The data can be visualized in real-time on the built-in LCD or via the eWelink app, up to six-month of hourly power consumption history can be saved, and the system can also be integrated with third-party solutions such as a Home Assistant, IFTTT, and Alexa Energy dashboard. SONOFF POW Elite specifications: WiSoC – Espressif Systems ESP32 dual-core Xtenxa processor @ up to 240 MHz with 2.4 GHz WiFi 4 and Bluetooth 4.2 connectivity Wireless – 2.4GHz 802.11 b/g/n WiFi 4 (Bluetooth does not seem to be used) Power Input/Output POWR316D model – 100-240V~ 50/60Hz 16A Max POWR320D model – 100-240V~50/60Hz 20A Max Dimensions – 98 x 54 x 31mm (DIN Rail mountable) Casing Material – PC V0 (Tested with UL94v-0 […]

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