Robin's Blog

Archive for the ‘Computing’ Category

Hacking the Worcester Wave thermostat in Python – Part 2

In the previous part we had established that the Worcester Wave thermostat app communicates with a remote server (run by Worcester Bosch) using the XMPP protocol, with TLS encryption. However, because of the encryption we haven’t yet managed to see the actual content of any of these messages! To decrypt the messages we need to do […]

Previously Unpublicised Code: RTWIDL

When looking through my profile on Github recently, I realised that I had over fifty repositories – and a number of these weren’t really used much by me anymore, but probably contained useful code that no-one really knows about! So, I’m going to write a series of posts giving brief descriptions of the code and […]

Two great IPython extensions

I bought a new laptop recently, and just realised that I hadn’t installed two great IPython extensions that I always try to install whenever I set up a new IPython environment – so I thought I’d blog about them to let the world (well, my half-a-dozen readers) know. They’re both written by MinRK – one […]

How to: get nice vector graphics in your exported PDF ipython notebooks

(This is really Part 2 of IPython tips, tricks & notes – Part 1, but I thought I’d give it a more self-explanatory title) IPython (sorry, Jupyter!) notebooks are really great for interactively exploring data, and then turning your analyses into something which can easily be sent to a non-technical colleague (by adding some Markdown and […]

How to: load the Google Maps Places library through Google API Loader

Google have recently introduced a new way of loading their javascript APIs: their Google API Loader. To use it, all you do is add a script tag in your HTML: <script src=””></script> You can then load whatever Google APIs you want using code like this: google.load(‘visualization’, ‘1.0’); google.load(‘jquery’, ‘1’); google.load(‘maps’, ‘3’); google.setOnLoadCallback(function() { console.log(‘Callback’) }); […]

How to: Log electricity usage from a CurrentCost EnviR – Part 1

After borrowing a CurrentCost electricity usage meter from my local library (if you’re in the area, then Eastleigh library will loan you one for free!), I decided to buy one, as I’d found it very useful in trying to reduce my electricity usage. The benefit of buying one as opposed to borrowing one was that […]

How to: Fix weird ENVI startup file issues

This post is more a note to myself than anything else – but it might prove useful for someone sometime. In the dim and distant mists of time, I set up a startup file for ENVI which automatically loaded a specific image every time you opened ENVI. I have no idea why I did that […]