FairTradeElectronics: Rediscover Your Music With the Sennheiser HD700 digital...
Music is only as good as the device you use to listen to it. There are a number of devices that allow you to experience music. One of these devices is the headphones. These are a pair of large...
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JeeLabs: Low-power mode :)
First, an announcement:Starting now, the JeeLabs Weblog is entering “low-power mode” for the summer period. What this means: one weblog post every Wednesday, but no additional articles.While in...
View Articlemharizanov: Some thoughts on security in terms of IoT
Connected devices and sensors are the fastest growing sources of data. Billions of records are being generated daily around the globe and data transported across networks to be consumed where needed....
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mharizanov: 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,...
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mharizanov: DDoS attack on my blog
An intensive Distributed Denial of Service attack is currently undergoing on my blog, with HTTP request rates hitting thousands per minute. It all started few days ago when I received a message from my...
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mharizanov: Free signed SSL certificate for my blog
As soon as I blogged about IoT and security few weeks ago, my blog got hit by a massive DDoS attack combined with daily hack attempts via WordPress’ backend and SSH. I’m dealing with both issues pretty...
View ArticleJeeLabs: Greasing the “make” cycle on Mac
I’m regularly on the lookout for ways to optimise my software development workflow. Anything related to editing, building, testing, uploading – if I can shave off a little time, or better still, find a...
View ArticleFairTradeElectronics: How To Take Care Of Your Parrot
Parrots are birds that are kept by many people as pets. These birds are known to have impressed human beings for many centuries. Parrots were kept by many ancient people starting from kings, warlords,...
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JeeLabs: RFM69s, OOK, and antennas
Recently, Frank @ SevenWatt has been doing a lot of very interesting work on getting the most out of the RFM69 wireless radio modules.His main interest is in figuring out how to receive weak OOK...
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JeeLabs: Forth on a DIP
In a recent article, I mentioned the Forth language and the Mecrisp implementation, which includes a series of builds for ARM chips. As it turns out, the mecrisp-stellaris-... archive on the download...
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JeeLabs: Could a coin cell be enough?
To state the obvious: small wireless sensor nodes should be small and wireless. Doh.That means battery-powered. But batteries run out. So we also want these nodes to last a while. How long? Well, if...
View ArticleJeeLabs: Doodling with decoders
With plenty of sensor nodes here at JeeLabs, I’ve been exploring and doodling a bit, to see how MQTT could fit into this. As expected, it’s all very simple and easy to do.The first task at hand is to...
View Articlemharizanov: My own cloud based version control tool
There is no second opinion about the importance of version control, it is a must-have for any software project. The option for reversibility, concurrency and history of code edits is what makes it so...
View ArticleJeeLabs: Lessons from history
(No, not the kind of history lessons we all got treated to in school…)What I’d like to talk about, is how to deal with sensor readings over time. As described in last week’s post, there’s the “raw”...
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JeeLabs: A feel for numbers
It’s often really hard to get a meaningful sense what numbers mean– especially huge ones.What is a terabyte? A billion euro? A megawatt? Or a thousand people, even?I recently got our yearly gas bill,...
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JeeLabs: Clojure and ClojureScript
I’m in awe. There’s a (family of) programming languages which solves everything. Really.it works on the JVM, V8, and CLR, and it interoperates with what already existsit’s efficient, it’s dynamic, and...
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JeeLabs: Space tools
It’s a worrisome sign when people start to talk about tools. No real work to report on?With that out of the way, let’s talk about tools :) – programming tools.Everyone has their favourite programmer’s...
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JeeLabs: Hundertwasser
No techie post this time, just some pictures from a brief trip last week to Magdeburg:… and on the inside, even more of a little playful fantasy world:This was designed by the architect Friedensreich...
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John Cantor : Heat Pump Performance Monitoring Examples
On 10th September I will be giving a brief presentation at the Ground Source Heat Pump Expo at the Ricoh Arena on the topic ‘Energy or Performance Monitoring’, so its timely to do a little blog here to...
View ArticleJeeLabs: Bandwagons and islands
I’ve always been a fan of the Arduino ecosystem, hook, line, and sinker: that little board, with its AVR microcontroller, the extensibility, through those headers and shields, and the multi-platform...
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