May 212013
 
Comparison of real resolving power of RasPiCam with other cameras

Talk to any photography geek and you’ll hear that the glass is a lot more important than the number of pixels. This is definitely true. It doesn’t matter how many pixels you’ve got if the light isn’t gathered and focussed nicely onto the sensor. Sensor size is the other large factor. The larger the sensor, the better the pictures (generally). The optimum is therefore good glass and a big sensor. With phone cameras, you usually have a small sensor and a small lens, which is far from ideal. Good glass costs hundreds or thousands and [...more...]

May 112013
 
Review of ISO-TECH IDM99III Digital Multimeter

A multimeter is the Swiss Army Knife of electronics. You really do need one to debug your circuits when things aren’t working. GRRRRRR! Where is that dodgy connection? I’ve managed for years with a very cheap multimeter, but recently RS Components sent me this ISO-TECH IDM99III for review. Could it be “the one”? My brief is “an honest video review”. I receive no payment or kickback for doing this, but I do get to keep the product. I’m getting quite a lot of stuff in for review at the moment, from lots of different sources. [...more...]

Apr 282013
 
Cyntech GPIO Breakout Paddle Board Review

The Cyntech GPIO paddle board is a new type of breakout board for the Raspberry Pi. It’s nice and small (about half the size of the Pi) elegantly simple, and I like the connectors. To connect a wire, you hold down the orange tab, push your wire into the hole and release the tab. The wire is gripped by a spring-loaded contact. It comes with a very nice “rainbow” ribbon cable, which is much more cheerful to look at than a grey one and it’s a decent 20cm length as well. You don’t always want [...more...]

Apr 102013
 
Tandy Multiface Gertboard Compatible Interface Board for Raspberry Pi

The Tandy Multiface is a brand new I/O interface board for the Raspberry Pi designed by Darren Grant from Tandy. The reason it came about is that, back in September 2012, Tandy was marketing a Gertboard kit, having bought a supply of official Gertboard PCBs from Farnell. This was a bit of a coup because Tandy beat Farnell to the punch with their own product. Farnell struggled to get their ducks in a row (I seem to remember comments about a shortage of one of the chips) and launched their kit about a month later. [...more...]

Apr 032013
 
Bramble Case for the Raspberry Pi model A review

Nicholas Luzzietti, who runs Bitcrafts, based in Dresden, sent me a review copy of one of his Bramble cases for the Raspberry Pi. It’s a laser cut, 3 layer birch ply finger-jointed box construction. Mine has a very nice Raspberry Pi logo lasered into the top, but other variants are available. All the holes are in the right places and are a good fit for all the ports. All the parts fit together very well – so well in fact that no glue is needed. I wonder if they will loosen with time? The case [...more...]

Mar 282013
 
Guzunty Pi - Open Source CPLD board for the Raspberry Pi

The Guzunty Pi board is an open source Complex Programmable Logic Device (CPLD) add-on for the Raspberry Pi. Derek Campbell is behind this project, and has clearly spent a lot of time and effort putting it all together. He describes it… “a CPLD is like several large breadboards laid out on your desk, full of every combination of logic devices you are ever going to need. It is waiting to be told what to do. It doesn’t need a host of jumper wires like a breadboard would. It can be reprogrammed again and again (even [...more...]

Mar 142013
 
Eben Upton meets RasPi.tv at Oxford Geek Night

Last night I went along to the Oxford Geek Night #30 to see Eben Upton talking about the Raspberry Pi. It was a good evening, but it was absolutely wall-to-wall people. Fortunately, it was obvious that it was going to be busy, so I got there very early and got a seat at a table near the stage. But you can be too clever sometimes can’t you? The fact that there were so many people ‘standing in the gap’ meant that I couldn’t see the stage. :( I enjoyed Eben’s talk though. The sound system [...more...]

Feb 052013
 
Raspberry Pi Model A first impressions and photos

I was keeping an eye on the RS and Farnell sites on Monday morning because I’d heard a ‘reliable whisper’ that the model A was launching this week. I didn’t know what day, but I figured it might be Monday. No sign of anything early morning, but then I forgot and didn’t see Liz’s announcement on the Pi blog until a couple of hours after they went live. By that time, RS was showing back order, but Farnell had stock levels of ~1800, so I snagged one. I got a “shipped” email about 3 hours [...more...]

Feb 032013
 
HDMI to VGA converter part 2 - VGA projector

This is part 2 of my review of the HDMI/VGA 1080 Ultimate HD Video Converter. It covers comparison of VGA and HDMI in the GUI; use of an old 1024 x 768 VGA monitor with the Pi; using a VGA projector to show a video; trying out an MHL adaptor with a phone and VGA monitor. If you haven’t seen part one yet, you can find that here. To complete the review, I set myself the following tasks… see if I can get it to go full-screen in GUI by tweaking settings do some side [...more...]