Unnecessarily robust reclaimed pallet-wood table, built for our allotment.

 

Optimal use of frying pan space when making fish finger and black pudding sandwiches. 

Replacement beer fridge thermostat

This is an Arduino-based thermostat I made for the beer fridge that Tina found in the rubbish outside our flat. It worked fine for a few months and then stopped - the mechanical thermostat had crapped out.

Coincidentally, I had a thermocouple and a MAX6675 thermocouple amplifier hanging around that I'd purchased with my Sparkfun free day winnings so I threw this together and installed it into the space where the old thermostat had been. Since I had heaps of I/O pins left I added a 7-segment display to display the temperature on the front of the fridge.

It works great, and is currently installed at Cardiff Hackspace, cooling our beers.

Kittehs love books

Nice scope trails.

Lithium Ion battery (near) disaster

Lithium Ion battery failures are well documented. There were have been many fires and explosions and Sony recalled millions of laptop batteries in 2008.

My phone battery has been getting steadily worse and today on my way to our Bristol branch for some training my phone turned off even though it had been fully charged an hour before.

I took out the battery to reset it and immediately noticed a distinct bulge in the middle of the battery. Here's a picture of the measurement across the middle of the replacement battery that I've had for months but not got around to putting in:

 

And the old one:

 

 Given that this is often the first sign of failure, and that the next sign is failure tends a bit on the firey side, I might just throw this battery away.

Wild Wales

I've just finished reading Wild Wales, by George Borrow, which I picked up in an Oxfam bookshop for £4.99, not long after we moved over here. I know this because I've been using a train ticket (Day Travelcard between Earlsfield and zones 1,2,3 and 4; dated 22 October 2006) as my bookmark, which is quite convenient.

The book, first published in 1862, is a telling of Borrow's (mostly) walking tour of Wales, in 1854. He starts off in the north and covers much of the country, inexplicably missing out most of Carmarthenshire and all of Pembrokeshire as well as Cardiff.
I won't give a full review, but it is an interesting look at Wales, right at the beginning of its industrial boom. I particularly appreciate this passage, describing his arrival at Merthyr Tydfil at night, at a time when (I believe) my great-great-great-grandfather, Thomas Hughes, was living there:

Turning round a corner at the top of a hill I saw blazes here and there, and what appeared to be a glowing mountain in the south-east. I went towards it down a descent which continued for a long, long way; so great was the light cast by the blazes and that wonderful glowing object, that I could distinctly see the little stones upon the road. After walking about half-an-hour, always going downwards, I saw a house on my left hand and heard a noise of water opposite to it. It was a pistyll. I went to it, drank greedily, and then hurried on. More and more blazes, and the glowing object looking more terrible than ever. It was now above me at some distance to the left, and I could see that it was an immense quantity of heated matter like lava, occupying the upper and middle parts of a hill, and descending here and there almost to the bottom in a zigzag and tortuous manner. Between me and the hill of the burning object lay a deep ravine. After a time I came to a house, against the door of which a man was leaning. “What is all that burning stuff above, my friend?”

“Dross from the iron forges, sir!”

I now perceived a valley below me full of lights, and descending reached houses and a tramway. I had blazes now all around me. I went through a filthy slough, over a bridge, and up a street, from which dirty lanes branched off on either side, passed throngs of savage-looking people talking clamorously, shrank from addressing any of them, and finally, undirected, found myself before the Castle Inn at Merthyr Tydvil.

Delightful.