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.

Channel Tunnel 31 October 2019

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

Midnight Sun 08 July 2016 - 1 comment

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

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…

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.

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.)

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.)

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.)

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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