Monday, 5 April 2021

Prostate Cancer: IGRT & the linear accelerator

Of all the scanners I've been put under or pushed through, the linear accelerator has to be the most impressive.


With its 4 'arms' rotating around your body, its half Swiss Army knife and half curious robot.

I can't help wondering if they ever go berserk, pick up the patient, spin them around a couple of times, and then dump them into a bin, saying "Sorry mate, you are beyond help!"

Saturday, 27 March 2021

Filament "pull" affecting 3D print performance

Friction in the filament feed path can affect 3D printer performance...


...or at least that is the conclusion I have come to over the last few days.

Here are my notes to back this up.

Friday, 12 March 2021

Playing with colour recognition #2: resistor value reader

This post is about a practical example of colour recognition.


It describes an experiment to determine resistor values from their coloured bands.

Its an interesting, but difficult task.

Wednesday, 10 March 2021

3D Printing: sticking and removing

This post is primarily concerned with 2 issues;


1) Getting your prints to stick to the bed

2) Getting your prints off the bed

Sunday, 7 March 2021

3D Printing: I'm back in the saddle!

It is almost 8 years since I've posted anything on 3D printing.


That's largely because its almost 8 years since I last touched a 3D printer.

Well now that I have my own printer...I'm back!

Saturday, 6 March 2021

Prostate Cancer: "F" is for.... Fiducial

When the oncologist started to mention "fiducials" I obviously wanted to know how big they were and where he was proposing to stick them.


My first concern was unfounded, as it turns out they are quite small.

However, the second concern proved to be more justified.

Thursday, 25 February 2021

Olympus ED 75-300mm zoom lens

Buying cheap zoom lenses generally leads to disappointment.


And you often eventually end up trading the damn thing in for something more expensive, costing even more money in the long run.

But we went ahead and bought this low cost lens anyway.

Thursday, 18 February 2021

Olympus OM-D Firmware Updates: not using Windows or Mac

We love our 3 Olympus OM-D cameras.


But I was less happy recently when I wanted to update the firmware.

However, I've now found away around my problem.

Wednesday, 17 February 2021

Prostate Cancer: my chemo experience

As I don't have any horror stories, and someone has convinced me that my notes may be of interest to is my experience of chemotherapy.