RFM69 to MQTT gateway using ESP8266

I’ve mentioned my plans for this project during the IoT hangout session few months ago, it has finally materialized as working prototype. The blocker so far was the lack of ESP8266 RFM69 driver and free time on my end, so I’ve teamed up with Andrey Balarev to solve this. Andrey is an IoT enthusiast + embedded systems…

Local hostname for connected devices

Now that we have connected our project to the local network, we are immediately faced with another challenge: how can we reach it? Using WPS/SmartConfig means we force the unit into DHCP settings mode, IP address is auto assigned by the router in that case. You may not have access to the router’s settings to force static IP…

Tweeting silicon

Here is a fun project for I did couple days ago: a tweeting ESP8266. The typical approach when dealing with such task (and probably the better) is to use a proxy service like ThingSpeak’s ThingTweet, PushingBox or by building proxy yourself with Node-RED or mqttwarn. It is much more fun though to perform a direct tweet from a microcontroller. Just think…

Firmware Over The Air (FOTA) for ESP8266 SoC

With the IoT booming nowadays, the number of connected devices grows exponentially and so does the related software that drives them. There is no doubt that Firmware Over The Air (FOTA) is a highly desirable – if not required – feature for any embedded project/product both DIY or commercial. Being able to provide a remote…

DIY Internet connected smart humidifier

I worked on creating a Internet connected humidistat last week using my open source WiFi relay project as platform. We observe quite dry air at our house, I suspect this is due to the fact that we use fan coils for heating/cooling. Humidity levels at home are usually below the 30% mark, which poses a health risk along with uncomfortably dry…

WiFi Thermostat with weekly scheduler

Edit: The project is now available for sale in my shop, you can grab one here: [product id=”3785″]   The WiFi SSR board project changed a bit and I use classical relays instead of SSRs now. The reason is that SSRs tend to get quite hot when switching larger loads, and the 8A relays I last…