Third party cookies may be stored when visiting this site. Please see the cookie information.

Home Babies & Children Gallery Information Free Software Reviews Blog

Stewart's Blog

Monkeys, megabytes, medical and more ...

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

Archive for the 'Electronics' Category

Raspberry Pi Disco Lights – Pi Birthday 2016

Friday, March 4th, 2016

Click the image above for the slides for the Disco Light talk at the Pi Birthday 2016. Worksheet for Raspberry Pi NeoPixel practical session Below is a worksheet giving hands-on with connecting up NeoPixels to a Raspberry Pi using a breadboard. This uses breadboard NeoPixels. These do need a little soldering initially, but once soldered […]

The Raspberry Pi $5 PiZero – the cost is only half the story

Sunday, November 29th, 2015

The Raspberry Pi foundation has made a new Raspberry Pi computer called the PiZero. It’s a smaller version of the version 1 Raspberry Pi that’s been stripped back to the bare essentials with price that’s an amazing $5 (currently £4 in the UK including VAT). Not only that but they are so inexpensive they’ve been […]

Robot Arm control software for the Raspberry Pi

Friday, September 18th, 2015

Frustrated by the lack of Linux support for an education Robot Arm I bought – I’ve written my own. Other community members had already worked out the code to allow you to program the robot arm yourself in Python, but I wanted something that young children could easily see and interact with. I have therefore […]

Review of Meccano Meccanoid G15KS educational personal robot

Saturday, September 5th, 2015

Introduction This is a review of the Meccanoid G15K personal robot from Meccano. It’s a programmable robot that’s about 4 feet tall (about the same size as a 6 year old child). The recommended minimum age is 10 which I believe is the age for making it; I’m hoping to use it to teach programming […]

HDMI Pi – Raspberry Pi screen – upgrade to Raspberry Pi 2 / B+

Monday, April 6th, 2015

I bought a HDMI Pi, Raspberry Pi screen through the kickstarter project. When the Kickstarter was run then there were only the model A and model B Raspberry Pi computers and the screen was designed for the model B. Although the B+ was released before the screens actually shipped for logistics reasons (and to reduce […]

Raspberry Pi robot Android app

Thursday, February 26th, 2015

I created a web front end for my Raspberry Pi based robot, which works well on a desktop PC, but not quite the way I wanted on a mobile phone. My idea was to have graphical buttons for the different directions and holding down the button will make it move in that direction and releasing […]

Halloween Scary Pi-Ano – Raspberry Pi and Makey Makey keyboard

Friday, October 31st, 2014

This Halloween I created an indoor halloween light effect using a Raspberry Pi and a PIR sensor. Unlike previous years my children weren’t really involved in making this one, which is because my 9 year old daughter decided to create her own Raspberry Pi based Halloween Project. She has created a Raspberry Pi, Makey Makey […]

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 […]

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 […]


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