Posts

Caving (and mine exploring) is an unusual outdoor pursuit in that it's time spent almost entirely in darkness. As such you need a good source of light - usually a torch.

After 10 years of caving (and mine exploring) I now feel that I have earned the right to give my unsolicited opinion on what mak...

A TP-link Tapo C310 security camera streaming audio/video to the FOSS Viseron NVR software running on an Odroid-C2 single board computer/home server.

Because I couldn't resist the temptation of a technical challenge, despite my dislike of surveillance in general (sorry princip...

I have recently been working on a project exploring how I can use the laser surveying tool that I'm developing to produce high resolution surveys and 3D scans of abandoned mines and caves.

With the support of an innovation grant from the Deep Digital Cornwall project, run by the experts at the C...

When I buy something I like to own it. I'm not against rental or subscription services by any means, in fact in our consumerist world I'd like to see much more sharing of resources within communities, but when I buy something for myself I want to be able to (within reason!) do what I want with it.

When planning a caving trip there are lots of things to consider; whether the difficulty matches your groups abilities, whether the trip will be safe given the weather, and whether you've got the right equipment to actually do the trip. In the Yorkshire Dales this last one is particularly relevant,...

Sites of Special Scientific Interest, or SSSIs, are nature conservation areas given legal protection from damage, development, and neglect in order to safeguard the natural features that they contain. As their name implies, they are used to conserve features of particular biological or geological in...

This is the third post about a project to build a cave surveying device. You might want to read the previous post before embarking on this one.

So far we've worked out how we can decode readings from the LDM, and how we can wire it up to a microcontroller with a magnetometer and acceleromete...

This is the second post about a project to build a cave surveying device. You might want to read the first post before embarking on this one.

So far we've worked out how to read the distance measurements that the device writes on the serial pins of its MCU, but we've been doing this by hand...

In the Venn-diagram of my main hobbies there's a significant subset of Caving and Amateur electronics; in fact the British Cave Research Association has an entire journal, the Cave Radio & Electronics Group, dedicated to the subject. This project falls perfectly into that subset.

I'm reverse e...