RogerBW's Blog

I cached a geo 13 August 2021 - 3 comments

I finally tried geocaching. So far it's not a bad excuse for a walk.

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Channel Tunnel 31 October 2019

Just how much time does the Channel Tunnel save, compared with a ferry?

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Midnight Sun 08 July 2016 - 1 comment

I've been on holiday again. With photographs: cc-by-sa on everything.

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The Live Tracker 01 November 2014 - 2 comments

When I'm driving, I may get caught in traffic or have to divert round roadworks. If that happens, I don't want to pull in to call whoever's at my destination; that'll just make me even later, and on the motorway there aren't many opportunities to stop. But the machinery that I'm already using to log my trips knows my position anyway…

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Danish Ferries 03 August 2014

What's the best way to cross the various bodies of water round Denmark? Let's check this with actual data.

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Five Minutes to Home 13 March 2014

Where on the road am I five minutes from home?

I have data. I can check this. (Images follow.)

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Junction 21a, 22 or 23? 07 March 2014 - 4 comments

There's one bit of the canonical route to Cambridge where I have a choice: from the M25, should I leave at junction 21a, 22 or 23 to reach the A1(M) northbound? If in doubt: data! (Images follow.)

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Speed map of trips to and from Cambridge 21 February 2014

Pretty much every Wednesday evening, I drive to Cambridge and back. Since I leave at about the same time, I have some fairly consistent data about traffic patterns. (Images follow.)

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Introduction to the Instrumented Life 17 February 2014

I don't like being spied on. But I don't mind gathering my own data. In July of 2012 I bought a USB GPS receiver (a GlobalSat BU-353, the cheapest available device that had a good score on the gpsd compatibility list) for use with a Raspberry Pi, and I have it running for most car trips I make. (Images follow.)

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