Search found 5 matches

by Bob Mehew
Thu 30 May 2019 10:02
Forum: British Cave Monitoring Centre
Topic: Time-Stamping of Data
Replies: 2
Views: 160

Re: Time-Stamping of Data

For clarification, the comment about "go to View and Audit" appears to relate to TinyTag's Explorer software.

I would also add that after a free 6 week use, one then has to pay for the Explorer software. So the csv file downloaded as GMT time stamp seems the easier route to obtain data.
by Bob Mehew
Fri 09 Nov 2018 18:24
Forum: Cave Radio & Electronics
Topic: Help with progamming Arduino
Replies: 0
Views: 275

Help with progamming Arduino

I have managed to set up a CO2 sensor in conjunction with an Arduino Mini Pro with the objective of logging CO2 levels in cave using a Sensiron SCD30 sensor. There is a problem in that it is a bit heavy on power consumption so I am trying to modify the coding of the Arduino to incorporate a powering...
by Bob Mehew
Sat 06 Jan 2018 10:10
Forum: Cryogenic Cave Calcite Competition
Topic: Is there a Depth Limit?
Replies: 1
Views: 2005

Is there a Depth Limit?

Although the thermal gradient into the centre of the earth is quite low (around 0.03C/m), how far would the penetration of permafrost change this? Has anyone modelled the simple situation of the impact of coldness on solid rock using thermal conduction? Open passage will modify this by processes whi...
by Bob Mehew
Fri 22 Dec 2006 20:55
Forum: Caving
Topic: BCA Eco Anchor Scheme – A Discussion Document
Replies: 1
Views: 13910

BCA Eco Anchor Scheme – A Discussion Document

BCA Equipment and Techniques Committee has posted up a discussion document on Eco Anchors at http://british-caving.org.uk/?page=129 The front piece says most of what is needed to be said as an introduction. All paragraphs are numbered so please quote the paragraph number in any comment to help ident...
by Bob Mehew
Tue 28 Mar 2006 21:21
Forum: BCA
Topic: Number of Caves and percent covered by access controls
Replies: 4
Views: 21195

Number of Caves and percent covered by access controls

I have recently had a reason to cite the number of caves in the UK and the percent of caves which had free / permission / restricted / banned access. To provide an answer, I suggested in the order of 5,000 cave across the UK, 90% required permission (c.f. land owner to get down or access control) bu...