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|2019/11/15 21:57||Raspberry Pi » Blog||
What’s inside the Raspberry Pi 4 Desktop Kit?
The Raspberry Pi 4 Desktop Kit is the perfect gift for any budding maker, coder, or Raspberry Pi fanatic. Get yours today from Raspberry Pi Approved Resellers across the globe, and the Raspberry Pi Store, Cambridge.
The Official Raspberry Pi 4 Desktop Kit includes all you need to hook up your Raspberry Pi to an HDMI monitor or TV and get started.
Raspberry Pi 4 4GB
Released earlier this year, the Raspberry Pi 4 is the latest development from the Raspberry Pi team. Available in 1GB, 2GB and 4GB variants, the Raspberry Pi Desktop Kit is powerful enough to replace your humble desktop computer.
Official Raspberry Pi keyboard
Designed with Raspberry Pi users in mind, the new official keyboard is both aesthetically and functionally pleasing. Available in various language layouts, the keyboard also contains a USB hub, allowing for better cable management on the go.
Official Raspberry Pi mouse
Light-weight and comfortable to use, the official mouse is the perfect pairing for our keyboard.
Official Raspberry Pi case
Protect your Raspberry Pi from dust and tea spills with the newly-designed Raspberry Pi 4 case. How did we design it? Find out more here.
Official Raspberry Pi Beginners Guide
Updated for the new Raspberry Pi 4, our Official Beginners Guide contains all the information needed to get up and running with your new computer and provides several projects to introduce you to the world of coding. It’s great, but don’t take our word for it; Wired said “The beginners guide that comes with the Desktop Kit is the nicest documentation I’ve seen with any hardware, possibly ever. ”
Official Raspberry Pi USB-C Power Adapter
We’ve updated the Raspberry Pis power supply to USB-C, allowing your new computer to receive all the juice it needs to run while supporting add-ons like HATs and other components.
16GB micro SD Card with NOOBS
Plugin and get started. With the NOOBS pre-loaded on a micro SD card, you can get up and running straight away, without the need to spend time installing your OS.
2x Raspberry Pi Micro HDMI leads
Two?! The Raspberry Pi 4 includes two micro HDMI connectors, which means you can run two monitors from one device.
The immense feeling of joy that you’re making a difference in the world
We’re a charity. 100% of the profit we make when you purchase official Raspberry Pi products goes to support the work of the Raspberry Pi Foundation, and its mission to put the power of computing and digital making into the hands of people all over the world. Thank you!
Get your Raspberry Pi 4 Desktop Kit
To find your nearest Raspberry Pi Approved reseller, visit our products page or the Raspberry Pi Store, Cambridge. We’re constantly working with new suppliers to ensure more availability of Raspberry Pi products across the world.
BONUS: Un-unboxing video for Christmas
名探偵コナン (My First BIG)
|2019/11/14 23:42||Raspberry Pi » Blog||
Sustainable clothing with Rapanui and Raspberry Pi
New to the Raspberry Pi Store, Cambridge: T-shirts made using Raspberry Pis in Rapanui’s sustainable factory.
Oli Wilkin – our Glorious Retail Guru, to give him his formal title – has been hard at work this year bringing the Raspberry Pi Store, Cambridge, to life. Open since February, the store continues to evolve as it introduces our credit card-sized computer to a high-street audience. Oli and the store team are always talking to customers, exploring new ideas, and making changes. Here’s Oli on the latest development: Rapanui clothing, made sustainably with the help of Raspberry Pis.
Brothers Mart and Rob started bespoke clothing company Rapanui in a garden shed on the Isle of Wight, with an initial investment of £200 (about $257 US). Ten years later, Rapanui has grown to a fully fledged factory providing over 100 jobs. Their vision to create a sustainable clothing brand has seen them increase Rapanui’s offering from T-shirts to a much wider range of clothing, including jumpers, socks, and jackets. Another reason we like them a lot is that the factory uses over 100 Raspberry Pis with a wide variety of functions.
Rapanui’s early early days weres not without their challenges. Mart and Rob found early on that every improvement in sustainability came with a price tag. They realised that they could use technology to help keep costs down without cutting corners:
The Raspberry Pis are supporting things like productivity improvements, order tracking, workload prioritisation, and smart lighting. All employees are encouraged to try coding when they start working for Rapanui, and they’re empowered to change their workplace to make it smarter and more efficient.
As Mart explains,
All of the organic cotton that Rapanui uses is fully traced from India to the Isle of Wight, where it is turned into amazing quality branded items for their customers. Once a garment has come to the end of its life, a customer can simply scan the QR code on the inside label, and this QR code generates a Freepost address. This allows the customer to send their item back to Rapanui for a webshop credit, thus creating a circular economy.
Raspberry Pi + Rapanui
All of this makes us very pleased to be working with Rapanui to print the T-shirts you buy in the Raspberry Pi store.
We have started with our Raspberry Pi 4 T-shirt, and others will follow. Our hope is that all our T-shirts will be fully sustainable and better for you, our customers.
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名探偵コナンコレクション コナン＆大和敢助 (My First BIG)
Substitute Shinigami： Anime Lover Notebook, 112 Lined Pages, 6 x 9, Gift, School＆Office, Bleach, Ichigo
Substitute Shinigami: Anime Lover Notebook, 112 Lined Pages, 6 x 9, Gift, School
|2019/11/13 22:05||Raspberry Pi » Blog||
Listen to World War II radio recordings with a Raspberry Pi Zero
With the 50th anniversary of the D-Day landings very much in the news this year, Adam Clark found himself interested in all things relating to that era. So it wasn’t long before he found himself on the Internet Archive listening to some of the amazing recordings of radio broadcasts from that time. In this month’s HackSpace magazine, Adam details how he built his WW2 radio-broadcast time machine using a Raspberry Pi Zero W, and provides you with the code to build your own.
As good as the recordings on the Internet Archive were, it felt as if something was missing by listening to them on a modern laptop, so I wanted something to play them back on that was more evocative of that time, and would perhaps capture the feeling of listening to them on a radio set.
I also wanted to make the collection portable and to make the interface for selecting and playing the tracks as easy as possible – this wasn’t going to be screen-based!
Another important consideration was to house the project in something that would not look out of place in the living room, and not to give away the fact that it was being powered by modern tech.
So I came up with the idea of using an original radio as the project case, and to use as many of the original knobs and dials as possible. I also had the idea to repurpose the frequency dial to select individual years of the war and to play broadcasts from whichever year was selected.
Of course, the Raspberry Pi was immediately the first option to run all this, and ideally, I wanted to use a Raspberry Pi Zero to keep the costs down and perhaps to allow expansion in the future outside of being a standalone playback device.
Right off the bat, I knew that I would have a couple of obstacles to overcome as the Raspberry Pi Zero doesn’t have an easy way to play audio out, and I also wanted to have analogue inputs for the controls. So the first thing was to get some audio playing to see if this was possible.
The first obstacle was to find a satisfactory way to playback audio. In the past, I have had some success using PWM pins, but this needs a low-pass filter as well as an amplifier, and the quality of audio was never as good as I’d hoped for.
The other alternative is to use one of the many HATs available, but these come at a price as they are normally aimed at more serious quality of audio. I wanted to keep the cost down, so these were excluded as an option. The other option was to use a mono I2S 3W amplifier breakout board – MAX98357A from Adafruit – which is extremely simple to use.
As the BBC didn’t start broadcasting stereo commercially until the late 1950s, this was also very apt for the radio (which only has one speaker).
I’d now got a nice playback device that would easily play the MP3 files downloaded from archive.org and so the next task was to find a suitable second-hand radio set.
Preparing the case
After a lot of searching on auction sites, I eventually found a radio that was going to be suitable: wasn’t too large, was constructed from wood, and looked old enough to convince the casual observer. I had to settle for something that actually came from the early 1950s, but it drew on design influences from earlier years and wasn’t too large as a lot of the real period ones tended to be (and it was only £15). This is a fun project, so a bit of leeway was fine by me in this respect.
When the radio arrived, my first thought as a tinkerer was perhaps I should get the valves running, but a quick piece of research turned up that I’d probably have to replace all the resistors and capacitors and all the old wiring and then hope that the valves still worked. Then discovering that the design used a live chassis running at 240 V soon convinced me that I should get back on track and replace everything.
With a few bolts and screws removed, I soon had an empty case.
I then stripped out all the interior components and set about restoring the case and dial glass, seeing what I could use by way of the volume and power controls. Sadly, there didn’t seem to be any way to hook into the old controls, so I needed to design a new chassis to mount all the components, which I did in Tinkercad, an online 3D CAD package. The design was then downloaded and printed on my 3D printer.
It took a couple of iterations, and during this phase, I wondered if I could use the original speaker. It turned out to be absolutely great, and the audio took on a new quality and brought even more authenticity to the project.
The case itself was pretty worn and faded, and the varnish had cracked, so I decided to strip it back. The surface was actually veneer, but you can still sand this. After a few applications of Nitromors to remove the varnish, it was sanded to remove the scratches and finished off with fine sanding.
The wood around the speaker grille was pretty cracked and had started to delaminate. I carefully removed the speaker grille cloth, and fixed these with a few dabs of wood glue, then used some Tamiya brown paint to colour the edges of the wood to blend it back in with the rest of the case. I was going to buy replacement cloth, but it’s fairly pricey – I had discovered a trick of soaking the cloth overnight in neat washing-up liquid and cold water, and it managed to lift the years of grime out and give it a new lease of life.
At this point, I should have just varnished or used Danish oil on the case, but bitten by the restoration bug I thought I would have a go at French polishing. This gave me a huge amount of respect for anyone that can do this properly. It’s messy, time-consuming, and a lot of work. I ended up having to do several coats, and with all the polishing involved, this was probably one of the most time-consuming tasks, plus I ended up with some pretty stained fingers as a result.
The rest of the case was pretty easy to clean, and the brass dial pointer polished up nice and shiny with some Silvo polish. The cloth was glued back in place, and the next step was to sort out the dial and glass.
Frequency, volume, glass, and knobs
Unfortunately, the original glass was cracked, so a replacement part was cut from some Makrolon sheet, also known as Lexan. I prefer this to acrylic as it’s much easier to cut and far less likely to crack when drilling it. It’s used as machine guards as well and can even be bent if necessary.
With the dial, I scanned it into the PC and then in PaintShop I replaced the existing frequency scale with a range of years running from 1939 to 1945, as the aim was for anyone using the radio to just dial the year they wanted to listen to. The program will then read the value of the potentiometer, and randomly select a file to play from that year.
It was also around about now that I had to come up with some means of having the volume control the sound and an interface for the frequency dial. Again there are always several options to consider, and I originally toyed with using a couple of rotary encoders and using one of these with the built-in push button as the power switch, but eventually decided to just use some potentiometers. Now I just had to come up with an easy way to read the analogue value of the pots and get that into the program.
There are quite a few good analogue-to-digital boards and HATs available, but with simplicity in mind, I chose to use an MCP3002 chip as it was only about £2. This is a two-channel analogue-to-digital converter (ADC) and outputs the data as a 10-bit value onto the SPI bus. This sounds easy when you say it, but it proved to be one of the trickier technical tasks as none of the code around for the four-channel MCP3008 seemed to work for the MCP3002, nor did many of the examples that were around for the MCP3002 – I think I went through about a dozen examples. At long last, I did find some code examples that worked, and with a bit of modification, I had a simple way of reading the values from the two potentiometers. You can download the original code by Stéphane Guerreau from GitHub. To use this on your Raspberry Pi, you’ll also need to run up raspi-config and switch on the SPI interface. Then it is simply a case of hooking up the MCP3002 and connecting the pots between the 3v3 line and ground and reading the voltage level from the wiper of the pots. When coding this, I just opted for some simple if-then statements in cap-Python to determine where the dial was pointing, and just tweaked the values in the code until I got each year to be picked out.
Power supply and control
One of the challenges when using a Raspberry Pi in headless mode is that it likes to be shut down in an orderly fashion rather than just having the power cut. There are lots of examples that show how you can hook up a push button to a GPIO pin and initiate a shutdown script, but to get the Raspberry Pi to power back up you need to physically reset the power. To overcome this piece of the puzzle, I use a Pimoroni OnOff SHIM which cleverly lets you press a button to start up, and then press and hold it for a second to start a shutdown. It’s costly in comparison to the price of a Raspberry Pi Zero, but I’ve not found a more convenient option. The power itself is supplied by using an old power bank that I had which is ample enough to power the radio long enough to be shown off, and can be powered by USB connector if longer-term use is required.
To illuminate the dial, I connected a small LED in series with a 270R resistor to the 3v3 rail so that it would come on as soon as the Raspberry Pi received power, and this lets you easily see when it’s on without waiting for the Raspberry Pi to start up.
If you’re interested in the code Adam used to build his time machine, especially if you’re considering making your own, you’ll find it all in this month’s HackSpace magazine. Download the latest issue for free here, subscribe for more issues here, or visit your local newsagent or the Raspberry Pi Store, Cambridge to pick up the magazine in physical, real-life, in-your-hands print.
The post Listen to World War II radio recordings with a Raspberry Pi Zero appeared first on Raspberry Pi.
Hollow： Anime Lover Notebook, 112 Lined Pages, 6 x 9, Gift, School＆Office, Bleach, Ichigo
Hollow: Anime Lover Notebook, 112 Lined Pages, 6 x 9, Gift, School
Senbonzakura Kageyoshi： Anime Lover Notebook, 112 Lined Pages, 6 x 9, Gift, School＆Office, Bleach, Byakuya
Senbonzakura Kageyoshi: Anime Lover Notebook, 112 Lined Pages, 6 x 9, Gift, School
|2019/11/12 22:55||Raspberry Pi » Blog||
Social Action Hackathon with the Scouts
When you think of the Scouts, do you think of a self-sufficient young person with heaps of creativity, leadership, initiative, and a strong team ethic? So do we! That’s why we’re so excited about our latest opportunity to bring digital making to young people with the world’s leading youth organisation.
On 9 and 10 November, a large group of Scouts converged on their global headquarters at Gilwell Park in Surrey to attend a Social Action Hackathon hosted by a great team of digital making educators from the Raspberry Pi Foundation.
The event was to celebrate internet service provider Plusnet’s partnership with the Scout Association, through which Scout groups throughout the UK will be given free WiFi access. This will allow them to work towards tech-based badges, including the Raspberry Pi Foundation’s Digital Maker Staged Activity Badge.
The Social Action Hackathon
Over two days, the Scouts participated in our cutting-edge hackathon, where they were taught authentic agile development techniques; handed a crate of Raspberry Pi computers, electronic components, and construction materials; and given free rein to create something awesome.
The Social Action Hackathon was designed to directly support the Scout Association’s A Million Hands project, which aims to encourage Scouts to ‘leave the world a little better than they found it’ by engaging with their UK-based charity partners. During the Hackathon, the Scout Association asked the young people to create a technological solution that might benefit one of these important charities, or the people and communities that they support.
Creating with tech
First, participants were shown the capabilities of the technology available to them during the Hackathon by undertaking some short, confidence-boosting programming activities, which got them thinking about what assistive technologies they could create with the resources available. Then, they chose a call-to-action video by one of the A Million Hands charity partners as the basis of their design brief.
The event was designed to feel like a role-playing game in which teams of Scouts assumed the part of a fledgling technology start-up, who were designing a product for a client which they would bring to market. The teams designed and prototyped their assistive technology through a process used all over the world in technology and software companies, known as agile development methodology.
The fundamental principles of agile development are:
The ‘creation’ phase of the Hackathon consisted of several 90-minute rounds called sprints, each of which began with a team meeting (or stand-up) just as they would in a real agile workplace. Teams broke their project idea down into individual tasks, which were then put into an organisational tool known as a kanban board, which is designed to allow teams to get an instant snapshot of their current progress, and to help them to problem-solve, and adapt or change their current focus and plans at each stand-up meeting.
The final pitch
As their final task, teams had to present their work to a panel of experts. The four-person panel included the Raspberry Pi Foundation’s Head of Youth Partnerships, Olympia Brown, and television presenter, Reggie Yates, an advocate for Mind, one of the A Million Hands charity partners.
By completing the Social Action Hackathon, the young people also completed the fifth and most complex stage of the Digital Maker Staged Activity Badge in just two days — a real accomplishment!
If you think your Scout group might like to take their Digital Maker Badge, you can find free curriculum resources for all ages of Scout group, from Beavers to Explorers, on the Raspberry Pi Foundation partner page.
|2019/11/11 19:59||Raspberry Pi » Blog||
Gender Balance in Computing programme opens to all schools in England
After launching our Gender Balance in Computing programme this April, we have been busy recruiting for two trials within a small group of schools around England.
Today, we are opening general recruitment for the programme. This means that all primary and secondary schools in England can now take part in the upcoming trials in this landmark programme. You can register your interest here. Why not do it right now?
What we are doing, and why
Many young women don’t choose to study computing-related subjects. A variety of factors across primary and secondary education are likely to influence this, including girls feeling like they don’t belong in the subject or its community, a lack of sustained encouragement, and a lack of role models in computing when making their career choices. We are working with schools to better understand and help change this.
The Department for Education has recently funded our Gender Balance in Computing (GBIC) research programme, giving us the amazing opportunity to work with schools to investigate different approaches to engage girls in computing and to help increase the number of girls who select Computer Science at GCSE and A level.
GBIC is a collaboration between the Raspberry Pi Foundation; STEM Learning; BCS, The Chartered Institute for IT; and the Behavioural Insights Team. It is also part of the National Centre for Computing Education.
Operationally, we will lead the project together with the Behavioural Insights Team, with Apps for Good and Women in Science and Engineering (WISE) also contributing to the project. Trials will run in 2019–2022 in Key Stages 1–4, and over 15,000 pupils and 550 schools will be involved. It will be the largest national research effort to tackle gender balance in computing to date!
Which approaches are we trialling?
The different trials in this programme are related to:
Non-formal learning (Primary and Secondary, Jan 2020 – Mar 2020)
In the non-formal learning trial, which started in September, we seek to strengthen the links between non-formal learning and studying computing at GCSE or A level. The reason for this is that girls are often unaware that their non-formal learning about computing can help them in formal studies. Girls are also better represented in non-formal computing clubs than in formal settings where computing is taught, i.e. they are engaging with computing outside of the classroom, but not in their formal studies. So far in the non-formal learning trial, we have created specific resources for schools running Code Clubs and Apps for Good programmes which signpost the links between non-formal and formal learning of computing, and how these can lead to future career/subject choices later in the participants’ lives.
Belonging (Years 6 and 8, Sep 2020 – Jul 2021)
The belonging trial will tackle girls’ “lack of belonging” because they don’t see themselves represented in computing media coverage. To address this situation, we will work with primary and secondary schools to introduce girls and their parents to positive role models in computer science, deliver testimonials from these role models at key transition points in their education (such as while making their GCSE choices), and encourage the development of peer support networks.
Relevance (Years 6 and 8, Jan 2021 – May 2022)
The relevance trial will look at helping learners to see the real-world applications of learning computing. We will support schools to hold stimulus days that engage pupils by helping them to solve real-world problems through technology. We will also encourage pupils to develop projects that solve problems that are relevant to their local area, home, or classroom. The pupils will be able to further explore the real-world applications of computing through newly written classroom resources.
Teaching Approach (Years 6 and 8, Jan 2021 – May 2022)
The teaching approach trial is based on the idea that current approaches to teaching computing may not be fully inclusive and so may be less appealing to girls. In Key Stage 1, we will trial a “storytelling around computing” approach. In Key Stage 2 and 3, we will explore different types of teaching approaches to assess what the most effective mix is for engaging girls in the subject.
There is also an innovation trial, which we will develop based on any additional promising research pathways that emerge while the GBIC project progresses.
Join our GBIC School Network
By joining our programme, you’ll become part of our GBIC School Network.
This will give your school:
As part of the GBIC School Network, your school will need to:
Get involved in this landmark programme
Your support is invaluable — together we can work to improve the gender balance in computing!
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