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Friday 19 April 2013

Acorn 6210MG/5210MG Wireless Camera Instability - Continuous Triggering

Fig 1:  A lot of nothing!
There have been a lot of theories floated about recently regarding the problems with Acorn wireless cameras released since last December with the new SIM900 GPRS Module.

The new GPRS module is supposed to have a higher output than the old M10 and although I don't have the means to measure this accurately I'm fairly certain I've worked out what's happening. When the camera is triggered and tries to send an image (doesn't matter if it's MMS or SMTP) the RF output from the wireless module is causing interference with the camera PCB and upsetting its functions. 

Continuous or self triggering:

The amount and type of interference varies from camera to camera.  In particular the interference will cause self triggering in both MMS and SMTP  modes, but as I said before. not in all cameras.

Continuous or self triggering is the most annoying and undesirable of the problems caused by this interference but remove the SIM card and the camera behaves normally.

I had tested several of these cameras and was not getting any self triggering. In fact they were working completely OK sending via SMTP during bench tests and I couldn't understand why so many users were reporting this problem. Then I realised

Pioneering marine research surveys in Hebrides announced

Bottlenose Dolphin

The Hebridean Whale and Dolphin Trust (HWDT) has announced details of its 2013 surveys, in which volunteers and marine scientists will carry out pioneering research into the lives of whales, dolphins and porpoises off Scotland’s west coast.

The surveys – carried out from the charity’s research yacht Silurian between May and September – will gather data on the numbers and behaviour of whales, dolphins and

Thursday 18 April 2013

Acorn and Bushnell Trail Camera Night Time Infrared Lighting Comparisons

Fig 1:   Bushnell - High IR Light setting
It's always interesting and useful to make comparisons between different camera brands and models, particularly if you're looking for the right camera for a specific purpose.

All makes and models have their pros and cons and none more so than when it comes to IR night illumination.

Pete from Crowle in Lincolnshire kindly sent these comparisons between the Bushnell 119477 and the Ltl Acorn 6210MC.

These images clearly illustrate the difference in light output between the 28 LED Array of the Acorn and the 40 LED Array of the Bushnell which is

Friday 12 April 2013

Norwegian animal rights activists take Norway's wolf issue to Strasbourg

Image source
NOAH - For Animal Rights has this week sent a complaint to the secretariat of the Convention on the Conservation of European Wildlife and Natural Habitats - also called the Bern convention, regarding Norway's management of wolves. The purpose is to defend the animals' right to live within Norwegian borders.

The consequence of the current management is that the wolves in Norway are unable to get out of the critical situation in which they now are. The policy is clearly not made to protect but to minimize the number of individuals of a critically threatened species.

Only in the last few weeks have we seen new

Thursday 11 April 2013

Pine Marten taken with an Ltl Acorn 5210A using Infrared light

Pine Marten taken with an Ltl Acorn 5210A Trail Camera using Infrared light.
This image takes current pride of place in my close-up test results.
The Marten's nose is about 35cm from the lens and the original image has been 
cropped at the sides but not top and bottom.
The image is full size within the crop and has not had any noise filtering or sharpening.
You can download the image to enlarge to full size but please remember that the image is my copyright and can only be reused with my permission.

Close Focusing with the Acorn 6210MC Trail Camera

Fig 1:   Feeder test for the 6210MC
The apple is 1 metre from the camera lense

This third post about close focus adjustment of Ltl Acorn Trail Cameras shows the bench test results for a 6210MC set to focus down to 50cm.

Compare the test cards on this page with those of the 5210A set to focus down to 20cm in
Close Focusing with the Acorn 5210A Trail Camera figures 2 through 8.

Compare figure 1 (left) with the cropped images in
Garden Birds Close up with Ltl Acorn 5210A and 6210MC  figures 2 through 7.

All the images in this post are full size (2560 x 1920

Wednesday 10 April 2013

Garden Birds Close up with Ltl Acorn 5210A and 6210MC

Fig 1:  Blue Tit - 5210 at 45cm - 640 x 480 pixels crop from 2560 x 1920
Following on from my last post these are a few full size crops from the original images taken during the first close up tests.
Compare figure 1 top (crop) with figure 1 (full size image) in my last post.

All the original images are 5MP 2560 x 1920 pixels and the crop is 640 x 480 pixels.

Click on an image to view a slideshow.

Close Focusing with the Acorn 5210A Trail Camera

Fig 1:  Great Tit and Blue Tit trying out the feeder I'm 
using for the close focus tests with the Acorn 5210A
Click image to view full size
There have been a number of close focus experiments with trail cameras recently carried out by users of these cameras.

Adrian Jevons using an Acorn 6210

Kate MacRae using Bushnells

Both have achieved good results applying external close up lenses of various diopters.

Kate has produced her own piece of

Monday 8 April 2013

Iconic and rare Highland birds in spotlight for new Conservation Week

Roy Dennis with Osprey

Conservation charity Trees for Life is running a new ‘Iconic Birds of the Highlands’ Conservation Week from 25 May to 1 June 2013 – offering people the chance to see and learn about the area’s magnificent and rare bird species, and to take part in hands-on habitat restoration work.

Highlights include a day trip to the Isle of Skye to see white-tailed eagles, the UK’s largest bird of prey, and to discover more about the programme that has successfully reintroduced these stunning birds to Scotland’s

Friday 5 April 2013

Sponsor an Acre at Dundreggan to restore wild forest in the Scottish Highlands.

Trees for Life on FacebookTrees for Life on TwitterTrees for Life on Youtube

Dundreggan is a very special place, with wildflower meadows and aspen woods

along the River Moriston, rising through ancient Caledonian pinewoods
to the mires, lochans and heathlands on the higher mountain slopes.

With your donation of £5 per month, you can

Buckingham Palace reception for Trees for Life celebrates Jubilee Wood

Right to left at Buckingham Palace
Executive Director Alan Watson Featherstone;
 Trees for Life patron Gordon Buchanan,
Rosalind Grant-Robertson, who generously supported
Trees for Life’s purchase of Dundreggan;
Steve Morris, Operations Manager for Dundreggan

Trees for Life’s creation of a Diamond Wood in Inverness-shire to celebrate The Queen’s Diamond Jubilee in 2012 has been recognised at a Buckingham Palace reception this week (27 March), hosted by HRH The Princess Royal.
The event recognised the creation of 60 new Diamond Woods across the UK, each at least 60 acres in size, to symbolise the Queen’s 60-year reign. As part of this tree planting campaign, Trees for Life planted a new 60-acre Jubilee woodland of native trees at its Dundreggan Estate, to the west of Loch Ness in Glen Moriston.
Two million trees have been planted across Scotland in a range of locations during this project, which was organised by The Woodland Trust.
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This web site is about the wildlife, particularly the mammals, of the Glen Affric National Nature Reserve area in the north west Highlands of Scotland, UK; and the equipment I use to search for them, which is chiefly trail cameras.

I provide a technical support and parts service for the Ltl Acorn range of cameras and the income from this provides for the upkeep of this site and the purchase of cameras for my own surveying.

I hope you find the site useful and informative; and please contact me if you have any questions that I haven't already covered.