Category Archives: Hacking

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Sonoff SC with MQTT and Domoticz support

Last December Itead Studio updated their Home Automation product line with a new and different product. The main difference is that it doesn’t have a relay and it’s mainly sensors and no actuator (if we don’t define a notifying LED as an actuator). The Sonoff SC is a sensor station that packs a DHT11 temperature and humidity sensor, a GM55 LDR, an electret microphone with an amplifier circuit and a Sharp GP2Y1010AU0F [Aliexpress] dust sensor in a fancy case that looks like it was originally meant for a speaker.

The device is packs an ESP8266 as expected and is compatible with the eWeLink app. But, such a collection of sensors, with 3 of them having analog interfaces, cannot be run from the single-ADC ESP8266 so Itead has thrown in a good old ATMega328P to drive the sensors and report the Espressif with the data.

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Emulate a WeMo device with ESP8266

My daughters love to talk to (or with) my Amazon Dot [Amazon US] in their funny English: “Alexa, hello!”, “Alexa,  li-on!” (actually “light on”). It’s so easy to use it to switch on/off things at home using the fauxmo python script by Maker Musings. In his post about Amazon Echo and Home Automation more than a year ago he explains how he reverse-engineered the protocol of the WeMo switches that Alexa (Amazon Echo [Amazon US] or Amazon Dot [Amazon US]) supports.

I also have a server running the fauxmo script with an MQTT handler to control some of the Sonoffs I have at home, but this morning I woke up thinking: why should I use an external script to control my devices if I can code it in the firmware?

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Sonoff TH10 & TH16: sensors, displays, actuators,…

Itead Studio keep on creating interesting products for the hacker community. A few weeks ago a new version of the already classic Sonoff TH came to life. This new version comes in two flavours: the Sonoff TH10 and TH16 and you can buy them at Aliexpress: Sonoff TH 10A/16A Temperature And Humidity Monitoring WiFi Smart Switch.

In this article I will briefly talk about what’s new in this device to quickly go to explore one of those novelties: it’s external interface.

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4Duino-24 upside down

A few weeks ago the 4D Systems announced one of its latest products: the 4Duino-24, an Arduino compatible display module with built in 240×320 resolution TFT LCD Display with Resistive Touch and an ESP8266 ESP-06 module on board.

it looked like a great product for a home automation control panel, although the screen could have been bigger. Anyway I contacted the people at 4D Systems and they were kind enough to send me a sample to review, and hack!

I love getting packages in the mail

I love getting packages in the mail

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Your laundry is done

Have you ever forgotten your wet clothing inside the washer for a whole day? I have. Even for two days. They smell. You have to wash them again and you know you might end up forgetting about them again!

Actually that is happening to me since me moved to an old house in a town north of Barcelona. Instead of having the washer in the kitchen, like we used to, now we have it in the cellar, in a place I don’t normally pass by to notice the laundry is done.

So I started thinking about monitoring the washer to get notifications when the laundry is done. And since I was at the same time playing with ITead’s Sonoffs, which has an AC/DC transformer and a powerful controller with wifi, it looked like a nice project to put together.

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