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Stewart's Blog

Monkeys, megabytes, medical and more ...

(Children, computing, first aid and other ramblings ...)

Archive for the 'Computers' Category

Safely controlling mains electricity using the Raspberry Pi and Energenie Pi-mote

Sunday, October 26th, 2014

It’s useful to be able to turn mains electricity on using a computer program. Whilst it’s not hard to create an electronic circuit that can switch mains voltages, if not done correctly it can be dangerous. This is where the remote control sockets can be used to create a physical barrier between the low voltage […]

Book – Mastering the Raspberry Pi

Tuesday, October 14th, 2014

This is the second book that I’ve been the technical book reviewer for, the first being Learn Raspberry Pi with Linux. When I was contacted by Apress to ask if I’d do the review then I didn’t hesitate to say yes as from the description this sounded like just the sort of book I would […]

Malvern Festival of Innovation school’s day

Friday, October 3rd, 2014

It’s not often that you see a Raspberry Pi workshop, a team from (soon to be???) the worlds fastest car and some llamas in the same room, but that’s what you’d find at this years school’s day at the Malvern Festival of Innovation. I was there as a STEM Ambassador helping out on the Raspberry […]

Kids education day at PyconUK 2014

Wednesday, September 24th, 2014

PyCon UK is the UK conference for the Python programming language, held annually at Coventry. PyconUK is attended by many professional developers, but has recently added an education day to the line up. Last year was the first day that kids were specifically invited through the PyCon UK Raspberry Jam. For 2014 this evolved into […]

HDMI Pi – 9 inch screen for the Raspberry Pi

Monday, September 22nd, 2014

The HDMI Pi screen for the Raspberry Pi has now been made and is shipping to the kickstart supporters. It’s been a long wait, although much of that is due to changes and improvements in the design and we’ve been kept informed about the progress. So was it worth it ? … Yes! The final […]

Adding thumbnail images to MP3 tags for Citroen C4 Picasso USB MP3 player

Tuesday, September 16th, 2014

I have recently got a new car with a full graphical entertainment system. It’s a new Citroen C4 Grand Picasso with a built in Touch Drive system which includes a USB MP3 player. The system includes a 7″ touch screen which can display MP3 thumbnails. My CD collection is already digitized and includes JPEG cover […]

Bletchley Park and The National Museum of Computing

Thursday, September 4th, 2014

During the second world war Bletchley Park was home to the Government Code and Cypher School and played a critical role deciphering encrypted messages. I first visited a several years ago before it was opened to the public, it seamed a shame then that such an important part of British history wasn’t more accessible. Since […]

Unglue.it books – a new way of reading

Wednesday, August 13th, 2014

I’ve written before about my dislike of DRM, especially on ebooks (The problem with DRM on ebooks). Another thing that is great is when you can get a book for free, but with the option to reward the author by giving a donation. This is what I’ve done with a series of books called The […]

Raspberry Pi club – Programming the GPIO – Traffic Light LEDs

Monday, June 9th, 2014

One of the things I’ve been doing as a STEM Ambassador is to help support a Raspberry Pi club at a local high school. At first the club was led by the sixth form students, with the teachers and myself helping out as required. This was working well at first, but with many of the […]

Humble Bundle – DRM free games for Linux and Android and eBooks

Monday, June 2nd, 2014

I have bought many games and Ebooks through Humble Bundle. I don’t blog about them very often as the bundles are usually available for about a week and by the time I get around to writing the blog then that time is nearly over. I wanted to blog about this bundle though because it includes […]


UK days out, children and holiday information is also available on the Days Out Diary web site
Linux, LPI and the Quiz / Test Program posts are also available on the Penguin Tutor website
First Aid Information, first aid games and first aid practice test / quiz entries are also available on the First Aid Quiz Web site