Raspberry Pi Hardware – Page 9

How Much Less Power does the Raspberry Pi B+ use than the old model B?

raspberry pi, Raspberry Pi Hardware 91 Responses »

Jul 162014

How Much Less Power does the Raspberry Pi B+ use than the old model B?

The power circuit on the new Raspberry Pi B+ has been completely redesigned. It now has an efficient switching regulator. So I decided to take my trusty emeter, a tool I spent far too much money on a few years ago whilst in the grip of the aero-modelling ‘bug’, and make some measurements. I measured the current and voltage going into the Raspberry Pi. The emeter has a calibrated shunt (small blue rectange in the photo with ‘battery’ and ‘load’ at each end) that’s good for up to 20 Amps. This is a way of […more…]

Raspberry Pi Model B+ Launched Today

raspberry pi, Raspberry Pi Hardware 25 Responses »

Jul 142014

Today the Raspberry Pi model B+ is officially announced. It’s a well polished upgrade of the previous model B rev 2. I was fortunate enough to get my hands on one a bit early, so had time to examine, photograph, video and briefly try out the new Pi model B+ with HDMIPi. Here’s what it looks like… What’s New? What’s Changed? The processor and board size are the same, but there are lots of changes. We now have… a metal micro SD card slot on the back. Having previously broken (and fixed) two of the […more…]

RasPi.Today interview with Alex Eames about HDMIPi, RasPi.TV and RasPiO

Electronics, raspberry pi, Raspberry Pi Hardware 2 Responses »

Jul 062014

RasPi.Today interview with Alex Eames about HDMIPi, RasPi.TV and RasPiO

A couple of weeks ago, Russell Barnes interviewed me via a skype voice call. We had a half-hour discussion about HDMIPi, RasPi.TV and RasPiO as well as the Raspberry Pi in general and a bit of background stuff that I don’t tend to blog about. Russell is doing a great job with his RasPi.Today podcast and web site. He really did his homework in advance of the interview and in post production. There was definitely a need for a high quality Raspberry Pi based podcast, and I’m glad Russell has decided to fill the gap. […more…]

Hacking the UNICEF HDMIPi

raspberry pi, Raspberry Pi Hardware 3 Responses »

Jul 022014

You may remember seeing the special UNICEF edition HDMIPi, which I blogged about in a guest post on the Raspberry Pi Foundation blog a few weeks ago. This was a temporary solution to get them up and running quickly before the mainstream HDMIPi gets going. It’s a 10″ screen, a bit more expensive than the 9″ regular HDMIPi. It’s currently using a standard driver board. I visited Dave at Cyntech on Monday to discuss various HDMIPi related things. I walked away with one of the UNICEF edition demo HDMIPis, which I decided to take and […more…]

Raspberry Pi Compute Module pt 2

Electronics, raspberry pi, Raspberry Pi Hardware 4 Responses »

Jun 262014

I managed to get some GPIO action on the Raspberry Pi Compute Module. Gordon Henderson tweeted, jokily, about a lack of LEDs in my first video, so I got out some LED boards I made last year, plugged them in and modified a python script to incorporate 32 ports :). The video below shows the results, and also gives you a close-up of the ports, the compute module itself and removal and insertion.

Raspberry Pi Compute Module

Electronics, raspberry pi, Raspberry Pi Hardware, Review 30 Responses »

Jun 242014

The Raspberry Pi Compute Module was launched yesterday and I felt I owed it to you, dear readers, to get one. ;) OK. So, maybe it’s not fair to blame you guys for it. I’d have bought one anyway, but you helped me to not dither over the decision. I also have ideas for something I might do with it. But that’s top secret, so don’t tell anyone! So What is the Compute Module? It’s a small module in the same SODIMM form factor as a laptop memory module. You can see it in the […more…]

Temperature Control with RasPiO duino – or, How to protect your pipes

Electronics, raspberry pi, Raspberry Pi Hardware 30 Responses »

Jun 202014

Temperature Control with RasPiO duino - or, How to protect your pipes

I’ve recently been working on a new board called the RasPiO® duino. You might guess from the name that it’s a bit Arduino-like, and it is. I’m currently on iteration 5 and there’s going to be at least one more before production. All iterations have worked, but I keep getting ideas and suggestions from my beta testers (and myself) that I want to include. But the board is not really what today’s post is about. I want a way of preventing the water inlet pipe freezing in the basement of our house in Poland. In […more…]

RasPi.TV Hits 2 Million Page Views and HDMIPi driver board hardware freeze

Electronics, raspberry pi, Raspberry Pi Hardware 5 Responses »

Jun 132014

RasPi.TV Hits 2 Million Page Views and HDMIPi driver board hardware freeze

I’m publishing this post just after we hit 2 million page views, which will be around 1600 on Friday 13th June 2014 (lucky for some). It’s interesting this week that the Raspberry Pi Foundation has announced sale of 3 million Pis. We can’t quite match that, but let’s have some fun with stats anyway… 3 Million Pis sold – announced this week 2 Million page views on RasPi.TV – reached today 1 Million minutes of video watched on the RasPi.TV YouTube channel – in the next couple of weeks 1 Million visitors to RasPi.TV blog […more…]

Bitscope Micro Logic Analyser Demystifies SPI on the Pi

Electronics, Input and Output, raspberry pi, Raspberry Pi Hardware 11 Responses »

May 262014

Bitscope Micro Logic Analyser Demystifies SPI on the Pi

SPI – Serial Peripheral Interface Demystified I was in need of an interesting signal to check out the logic analyser functionality of the BitScope micro. So, another of my current RasPiO® Beta boards was used as a convenient way to connect an mcp3008 analog to digital converter (ADC) to the Pi and the scope. I don’t claim to be an expert on SPI, but having spent the best part of a day playing with it, the mcp3008 data sheet and the BitScope Micro, I understand it a lot better now. Four pins are used… CEO […more…]

Bitscope Micro. USB Scope that works on Raspberry Pi.

Electronics, raspberry pi, Raspberry Pi Hardware, Review 8 Responses »

May 192014

Bitscope Micro. USB Scope that works on Raspberry Pi.

When I first saw the Bitscope Micro on the Raspberry Pi Foundation blog, it ‘ticked all my boxes’. A couple of weeks later, when Pimoroni tweeted about having the first batch in stock, I ordered one immediately. In my circumstances, it would have been rude not to. Why? The reasons are too numerous to list them all, but here are the first few that spring to mind… I need a small, portable, USB scope since I spend about 20% of my time abroad and take my work with me. It’s also a logic analyser – […more…]

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