We all agree – HTTPS – the encrypted communication between WWW-browsers and servers – usually makes sense. However – under the cover of secure communications, some folks have silently pushed their version of rules into our life. And that makes things complicated – to say the least. Read More →
There are a few ways to measure power consumption, voltage or current with an Arduino. Unfortunately, the ESP8266 has a few limitations that make it somewhat difficulty to get things going. Let’s look at an easy way to achieve our task.
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Home automation is cool. It really is. Switch power and or off, lights come on with a touch or voice command, everything can be controlled from everywhere. Well – sometimes. Or not. Because there’s a big fight going on below the deck. And you may want to wait who wins. Read More →
After having been working with voice controlled or .. voice activated “smart” environments for a while, here’s my take: This could get really great if .. and that’s a big if .. we find a common protocol that enables flexibility, compatibility and true interactions. Read More →
So – you got this Amazon Alexa device at Cyber-Monday? And maybe a connected “smart” plug or light bulb? Before you start adding more “smart” stuff – here’s what you need to know. Read More →
Yep – those little ESP chips are cute. And powerful. And easy to program. And much more. But if you are going to control more than – say a closet light – you want to think about security. This requires hashes and tracking of the current time.
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Sometimes we have to send short command sequences and/or replies over unprotected networks. Especially when working with IoT environments. Though SSL/TLS is always preferred – sometimes it’s just too much overkill. Read More →
Cheap IoT devices like power plugs are mostly manufactured in China. They connect to “bridging” servers we don’t really have control over, they are usually not documented and those required “bridging” services may fail or even be terminated at any time. Which would of course render your (or my) “smart” power plugs useless. Time to do something about it. Read More →
Plenty of services use a standard email-address as login token. This has advantages: The user doesn’t need to remember another keyword and the service provider knows that the email address is unique and can be verified. But there’s one BIG problem: Other people know your email-address and – with it – 50% of your login credentials. How to to eat the cake AND eat it? Read More →
MPD is a cool server that is able to play DSD files for a while now. But it’s a bit of overkill for those of us who don’t want a complex sound server just to send a DSD /DSF files to an USB DAC. Here’s how you can play those files with ffmpeg and some glue 🙂 Read More →