Category: Electronics

Another update: Raspberry π4 for Zoneminder part 3

By GarfPosted on Cat Electronics, Journal, Linux, Photography, Technology, ZoneminderLeave a commentTags
Raspberry π4 for ZoneMinder Part 1 - Raspberry π4 8GB for Zoneminder Part 2 - Update: Raspberry π4 8GB for Zoneminder Part 3 - Another update: Raspberry π4 for Zoneminder (you are here) My π4 Zoneminder has been running for just over two months. Overall I'm pretty happy with it. The main issue I had was that the current stable version of Zoneminder 1.34.x was not available for the ARM64 version of Pi OS in the Debian repository. At time of writing, most of the current release of Pi OS is in fact Debian version 10 (Buster), and it comes… Read More ►
Damaged SD card

Fixing a damaged SD slot

By GarfPosted on Cat Electronics, Journal, Photography, Technology2 CommentsTags
There are many ways to break an SD slot, but a surprisingly common one is to jam a tiny piece of plastic it it that has snapped off from a damaged SD card. The tiny plastic dividers between an CD card's contacts can snap off. I've had quite several cards do that over the years. Usually one can just pull off the loose bit and continue using it. But occasionally it snaps off whilst actually in the socket. This guy explains it better than I can... https://www.photillustrator.com/how-to-fix-your-sd-card-slot/ NB, I don't think the guy actually mentions this, but I would strongly… Read More ►

Update: Raspberry π4 8GB for Zoneminder part 2

By GarfPosted on Cat Electronics, Journal, Linux, Photography, Technology, ZoneminderLeave a commentTags
Following on from my last article, this is Raspberry π4 8GB for Zoneminder part 2. Now I have had time to set it up and test it for a while. Firstly, I decided to abandon the ARM64 version of Ubuntu on π because it seems slow and clunky. Basically it seems the current beta ARM64 Raspian "Buster" is actually better than the allegedly tested LTS ARM64 Ubuntu 20.04.1. It's a heck of a lot faster too  and the Pi-specific tools actually work as well. And while I remember it, apparently Raspian has been rebranded as Raspberry Pi OS now -… Read More ►

Raspberry π4 8GB for Zoneminder

By GarfPosted on Cat Electronics, Journal, Linux, Photography, Technology, ZoneminderLeave a commentTags
This is a overview of my adventures experimenting with a tiny Raspberry π4 8GB for Zoneminder GNU/Linux-based security system. Raspberry π4 for ZoneMinder Part 1 - Raspberry π4 8GB for Zoneminder (you are here) Part 2 - Update: Raspberry π4 8GB for Zoneminder Part 3 - Another update: Raspberry π4 for Zoneminder Background I have been running Zonemnder GNU/Linux PC-based servers both for my home and for a few customers for several years. It's worked pretty well too. In fact, my wife and I really like our system. She shares certain cams with her folks back in Hungary. And my… Read More ►

A surprisingly straightforward studio flash repair

By GarfPosted on Cat Electronics, Journal, PhotographyLeave a commentTags
Back in 2015 I bought 3 pairs of  studio flash heads (one pair 400 joule, one pair 360 joule and one pair 200 joule). They were supplied as bargain bundles, complete with stands, brollies etc. via sellers on eBay. They were quite a bargain. Each flash head worked out at approximately £50 per unit,  They are branded "Senweit" but were actually manufactured by Shenzhen Nice Photographic Equipment Co.,Ltd. They were "end of line" products. In fact, I understand the product was discontinued in or around 2014. They are also beautifully made with (mostly ) metal casing and all-metal 16mm mounting… Read More ►

Ulefone 3w ruggedised smartphone

By GarfPosted on Cat Electronics, Journal, Linux, Photography, Radio, Technology2 CommentsTags
I recently purchased an unlocked Chinese Ulefone Armor 3W. - c/w  Mediatek chipset, 8-core 64-bit CPU, dual unlocked SIM slots, 256GiB TF slot and 10700mAH battery. I have quite a soft-spot for cheap generic Chinese phones. Of course, one has to choose the product quite carefully. You need to ensure your preferred device is not hobbled, or encumbered with masses of bloatware. If you want to make the device really useful then one also needs to be prepared to a little work oneself - especially if you wish to root the device. Because of its high power and relatively low… Read More ►