Location Aware Notification Lights with Node-Red and IFTTT

I am in the habit of going on cooking sprees while listening to music… loudly. I only share one wall with a neighbor here in the loft, and that neighbor is very tolerant. On a Sunday afternoon, with multiple dishes going at a time, my most used smart home feature is “Alexa, set a meatball timer for 25 minutes”. Having Alexa keep track of all my timers is really helpful when my hands are full. The problem is that I rarely hear the timer, and have burned a few things not paying attention.

Using IFTTT, Node-Red, and Home Assistant I can blink the lights in the room when the Alexa timer goes off – even if I wander off to a different room.

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Let's Encrypt

Setting Up Let’s Encrypt with Node-Red & Home Assistant

Privacy is important in the smart home, and one of the primary reasons to use Home Assistant is because it is totally under control of the user, on your own network. Since writing these posts, setting up encryption with Hass & Node-Red has been the number one question I’ve been asked about my setup. So after being lazy and just leaving my software behind a VPN and firewall, I finally git around to setting up SSL support for both Home Assistant and Node-Red.

Read below for a guide to securing your smart home with Let’s Encrypt.

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Home Assistant: Making My Plants Talk with IoT Sensors and a Python Script

Living in an urban city without a garden, I have been exercising my green thumb by accumulating more and more houseplants. I have them tucked away in every light-filled corner, hanging from every rafter in my tall ceilings. Which is a problem, because I have to get a ladder out to water most of them!

Using some cheap plant soil sensors and a simple Python script, I will have Home Assistant check all of my plants and make a list of which need my attention. Then when more than a few need to be watered, I can be notified or have the voice assistant give me an update.

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Basic Node-Red Flows for Automating Lighting with Home Assistant

Smart light bulbs are probably the first thing everyone getting into home automation buys. It is easy to see the applications for them – have the lights come on at night, turn off when you’re home, etc. It’s very satisfying to have the lights react to the day and your activities, and my goal with automating lighting has always been to not have to think about it, for it to work in the background.

In my initial post about Home Assistant and Node-Red, I explained the initial hoops you have to jump through to get both pieces of software up and running and talking to each other. Now we will start using them together in some very simple flows to control lighting, to get a better understanding of how Node-Red works, and to start to delve into this powerful tool.

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