Blog Archive: May 2025


Excel: How to calculate distances between longitude / latitude co-ordinates

Here's a blast from excel past, it was actually one of the more interesting projects I worked on. We were designing food waste recycling plants for the food manufacture and retail industries. The task was to calculate the most efficient solution ofhow many recycling plants to build and where to build them based on the waste arising of each shop   more »

Musing of the day 22-Feb-2017

I love an analogy, there's nothing better than pushing your explanation across the line with an unequivocal corresponding example in everyday life. I think I've crossed the line this time though, I'd been asked to rate the presentation I'd just been given on a subject outside of my specific skill set; I responded that it was tricking given how   more »

Free LetsEncrypt secure SSL server certificate install tutorial for Raspberry Pi

For me being SSL secured has always been the benchmark as having a bonafide website. That little green padlock next to your websites URL doesn't really mean much for a blog, but I always wanted one. At the start of last year I started thing about trying to get one. Ever being a skinflint I wanted to pay nothing for it, but logic overcame   more »

How to make a clock for a raspberry pi with an OLED display

My dream RaspberryPi project that I am slowly chipping away at is to create the ultimate alarm clock. It is a slow burner though as at it's inception I had none of the skills I needed to pull it off. I've now amassed all of the technical skills to pull it off and I'm just left with finalising the design and finding the time and the parts (not a   more »

How to run a python script as a service / in background / as a daemon

So you've written a killer python script and you want to run it in the background as a service because when you close the terminal window/SSH session it kills it. I originally worked it out when I wrote my Twitterbot app, and was going to write it up seperately then but it took me so long to get it running in the background and I tried so may   more »

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