This mechanical clock tells time using steel balls

There’s certainly no shortage of DIY clocks in the Arduino community; however, Eric Nguyen has come up with a rather unique way of showing hours and minutes: steel balls arranged as seven-segment displays.

For each time change, the face rotates down and a tray of arranged balls is lifted up to meet it via a servo motor assembly. Inside, a series of 28 servos capture and release the balls using magnet and linkage systems, plus another for the colon.

The device is powered by a Nano along with an RTC module for accurate timekeeping, and two PCA9685 driver boards control the motors directly.

As illustrated in the videos below, it’s an incredible build from a mechanical standpoint. Making it even more impressive, this is actually Nguyen’s first Arduino project!

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Linkdump: August 2020

Microchip synapses 29 – Between the now and the infinite by LEONARDO ULIAN

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Connect a Commodore with thermal printer

Connect a thermal printer to vintage Commodore computers using the IEC bus @ smdprutser.nl

Since a couple of months I have fascination for vintage computers like Commodore or Nintendo. I’m in the process restoring and pimping a Commodore SX64 and realized I did’t have a printer for it. After all it is an executive machine and how do I otherwise print my quotations and invoices? The solution was in a thermal printer I had lying around for years without a real purpose.

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How teachers train in Computing with our free online courses

Since 2017 we’ve been training Computing educators in England and around the world through our suite of free online courses on FutureLearn. Thanks to support from Google and the National Centre for Computing Education (NCCE), all of these courses are free for anyone to take, whether you are a teacher or not!

An illustration of a bootcamp for computing teachers

We’re excited that Computer Science educators at all stages in their computing journey have embraced our courses — from teachers just moving into the field to experienced educators looking for a refresher so that they can better support their colleagues.

Hear from two teachers about their experience of training with our courses and how they are benefitting!

Moving from Languages to IT to Computing

Rebecca Connell started out as a Modern Foreign Languages teacher, but now she is Head of Computing at The Cowplain School, a 11–16 secondary school in Hampshire.

Computing teacher Rebecca Connell
Computing teacher Rebecca finds our courses “really useful in building confidence and taking [her] skills further”.

Although she had plenty of experience with Microsoft Office and was happy teaching IT, at first she was daunted by the technical nature of Computing:

“The biggest challenge for me has been the move away from an IT to a Computing curriculum. To say this has been a steep learning curve is an understatement!”

However, Rebecca has worked with our courses to improve her coding knowledge, especially in Python:

“Initially, I undertook some one-day programming courses in Python. Recently, I have found the Raspberry Pi courses to be really useful in building confidence and taking my skills further. So far, I have completed Programming 101 — great for revision and teaching ideas — and am now into Programming 102.”

GCSE Computing is more than just programming, and our courses are helping Rebecca develop the rest of her Computing knowledge too:

“I am now taking some online Raspberry Pi courses on computer systems and networks to firm up my knowledge — my greatest fear is saying something that’s not strictly accurate! These courses have some good ideas to help explain complex concepts to students.”

She also highly rates the new free Teach Computing Curriculum resources we have developed for the NCCE:

“I really like the new resources and supporting materials from Raspberry Pi — these have really helped me to look again at our curriculum. They are easy to follow and include everything you need to take students forward, including lesson plans.”

And Rebecca’s not the only one in her department who is benefitting from our courses and resources:

“Our department is supported by an excellent PE teacher who delivers lessons in Years 7, 8, and 9. She has enjoyed completing some of the Raspberry Pi courses to help her to deliver the new curriculum and is also enjoying her learning journey.”

Refreshing and sharing your knowledge

Julie Price, a CAS Master Teacher and NCCE Computer Science Champion, has been “engaging with the NCCE’s Computer Science Accelerator programme, [to] be in a better position to appreciate and help to resolve any issues raised by fellow participants.”

Computing teacher Julie Price
Computer science teacher Julie Price says she is “becoming addicted” to our online courses!

“I have encountered new learning for myself and also expressions of very familiar content which I have found to be seriously impressive and, in some cases, just amazing. I must say that I am becoming addicted to the Raspberry Pi Foundation’s online courses!”

She’s been appreciating the open nature of the courses, as we make all of the materials free to use under the Open Government Licence:

“Already I have made very good use of a wide range of the videos, animations, images, and ideas from the Foundation’s courses.”

Julie particularly recommends the Programming Pedagogy in Secondary Schools: Inspiring Computing Teaching course, describing it as “a ‘must’ for anyone wishing to strengthen their key stage 3 programming curriculum.”

Join in and train with us

Rebecca and Julie are just 2 of more than 140,000 active participants we have had on our online courses so far!

With 29 courses to choose from (and more on the way!), from Introduction to Web Development to Robotics with Raspberry Pi, we have something for everyone — whether you’re a complete beginner or an experienced computer science teacher. All of our courses are free to take, so find one that inspires you, and let us support you on your computing journey, along with Google and the NCCE.

If you’re a teacher in England, you are eligible for free course certification from FutureLearn via the NCCE.

The post How teachers train in Computing with our free online courses appeared first on Raspberry Pi.

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Congratulations Carrie Anne Philbin, MBE

We are delighted to share the news that Carrie Anne Philbin, Raspberry Pi’s Director of Educator Support, has been awarded an MBE for her services to education in the Queen’s Birthday Honours 2020.

Carrie Anne Philbin MBE
Carrie Anne Philbin, newly minted MBE

Carrie Anne was one of the first employees of the Raspberry Pi Foundation and has helped shape our educational programmes over the past six years. Before joining the Foundation, Carrie Anne was a computing teacher, YouTuber, and author.

She’s also a tireless champion for diversity and inclusion in computing; she co-founded a grassroots movement of computing teachers dedicated to diversity and inclusion, and she has mentored young girls and students from disadvantaged backgrounds. She is a fantastic role model and source of inspiration to her colleagues, educators, and young people. 

From history student to computing teacher and YouTuber

As a young girl, Carrie Anne enjoyed arts and crafts and when her dad bought the family a Commodore 64, she loved the graphics she could make on it. She says, “I vividly remember typing in the BASIC commands to create a train that moved on the screen with my dad.” Being able to express her creativity through digital patterns sparked her interest in technology.

After studying history at university, Carrie Anne followed her passion for technology and became an ICT technician at a secondary school, where she also ran several extra-curricular computing clubs for the students. Her school encouraged and supported her to apply for the Graduate Teacher Programme, and she qualified within two years.

Carrie Anne admits that her first experience in a new school as a newly qualified teacher was “pretty terrifying”, and she says her passion for the subject and her sense of humour are what got her through. The students she taught in her classroom still inspire her today.

Showing that computing is for everyone

As well as co-founding CAS #include, a diversity working group for computing teachers, Carrie Anne started the successful YouTube channel Geek Gurl Diaries. Through video interviews with women working in tech and hands-on computer science tutorials, Carrie Anne demonstrates that computing is fun and that it’s great to be a girl who likes computers.

Carrie Anne Philbin MBE sitting at a disk with physical computing equipment

On the back of her own YouTube channel’s success, Carrie Anne was invited to host the Computer Science video series on Crash Course, the extremely popular educational YouTube channel created by Hank and John Green. There, her 40+ videos have received over 2 million views so far.

Discovering the Raspberry Pi Foundation

Carrie Anne says that the Raspberry Pi computer brought her to the Raspberry Pi Foundation, and that she stayed “because of the community and the Foundation’s mission“. She came across the Raspberry Pi while searching for new ways to engage her students in computing, and joined a long waiting list to get her hands on the single-board computer. After her Raspberry Pi finally arrived, she carried it in her handbag to community meetups to learn how other people were using it in education.

Carrie Anne Philbin
Carrie Anne with her book Adventures in Raspberry Pi

Since joining the Foundation, Carrie Anne has helped to build an incredible team, many of them also former computing teachers. Together they have trained thousands of educators and produced excellent resources that are used by teachers and learners around the world. Most recently, the team created the Teach Computing Curriculum of over 500 hours of free teaching resources for primary and secondary teachers; free online video lessons for students learning at home during the pandemic (in partnership with Oak National Academy); and Isaac Computer Science, a free online learning platform for A level teachers and students.

On what she wants to empower young people to do

Carrie Anne says, “We’re living in an ever-changing world that is facing many challenges right now: climate change, democracy and human rights, oh and a global pandemic. These are issues that young people care about. I’ve witnessed this year after year at our international Coolest Projects technology showcase event for young people, where passionate young creators present the tech solutions they are already building to address today’s and tomorrow’s problems. I believe that equipped with a deeper understanding of technology, young people can change the world for the better, in ways we’ve not even imagined.” 

Carrie Anne has already achieved a huge amount in her career, and we honestly believe that she is only just getting started. On behalf of all your colleagues at the Foundation and all the educators and young people whose lives you’ve changed, congratulations Carrie Anne! 

The post Congratulations Carrie Anne Philbin, MBE appeared first on Raspberry Pi.

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Join East Coast ReprapFest Virtually This Weekend

If you’re a 3D Printing nut, you absolutely can not miss the East Coast RepRap Festival (ERRF) going on this upcoming weekend. If you’ve never seen one, these gatherings are where 3d printing enthusiasts of all kinds gather to show off their creations and swap tips and tricks. It is […]

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The post Join East Coast ReprapFest Virtually This Weekend appeared first on Make: DIY Projects and Ideas for Makers.

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App note: Paralleling linear regulators made easy

Various configuration of linear regulator for parallel operation discussed in this technical article from Analog Devices. Link here

Linear regulators provide a simple, low noise solution for dc-dc regulation. However, at higher VIN-VOUT differentials the low efficiency and high power dissipation of linear regulators limits the amount of output current that can realistically be delivered. Connecting multiple linear regulators in parallel spreads the load (and the heat) over several ICs, increasing the useful range of output currents a solution can deliver. However, connecting linear regulators in parallel is not always straightforward.

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