Tag: PoE

Cdycam 3pcs/1bag PoE Splitter Power Over Ethernet 48V to 12V IEEE802.3af Standard Type 15W Power Supply Module For NonPoe Camera (WHL #119)

Here’s something that lasted just shy of five years – a PoE to 12V converter.

I just checked, I never wrote about these things…so here we go. Last week, the ESP32 in my living room stopped working. It does serve as a sensor station (temperature, humidity) for the DECT heater valve in the living room, and it also runs some LED stripes around the house, some of which are automated via iobroker, and some are activated by infrared sensors. They all can be changed over a simple web interface as well. Turns out: The ESP is fine, but the power supply, a PoE to 12V converter, is dead. […]

7th June 2026 7th June 2026 By Bzzz In No Comment

The PCB (Christmas) Tree 2021 update (#P32F1)

Ah yes, the good ol’ PCB tree.
It wasn’t in use for a good part of 2021 due to the fuse burning out, unclear if it was from an accident (some parts are still wobbly) or just slightly specced too low at 1.6A (slow-blow, but 24/7 operation). Since it was placed inside a somewhat difficult to access triangle cavity of PCBs, it took me a while to open it up again and move things outside. Voltage of the DC-DC converter was lowered slightly to around 3.2V and the single fuse was replaced by two individual units placed on the outside, dividing the power rail roughly equal between upper and lower tree (by current, not by physical size) […]

26th December 2021 26th December 2021 By Bzzz In No Comment

The PCB (Christmas) Tree (#P32)

Epiphany has already passed and St. Knut’s day is next Wednesday, it’s about time to stop being lazy and get the Christmas tree out of the living room.
Well, yes, but not the usual way. As shown previously, it’s not an ordinary tree. It’s green and it has fancy little lights all around, but it’s also containing significant amounts of lead and it needs a PoE port to operate.

Meet the PCB Tree.

Made from scrap circuit boards, random bits of wire, leaded solder and a couple of Chinese ingredients, it’s a wonderful Christmas abomination that sat the entire last year in my office and received a significant addition in early December 2020. […]

10th January 2021 11th January 2021 By Bzzz In 1 Comment

Construction fails in networking gear (#R9)

Ah well, I’m too lazy to craft another post dealing with things currently in development – let’s rant instead.

A few weeks ago I bought this huge lot of “failed” networking electronics that finally led to having an 8-port PoE switch at home, which is a nice addition – the MikroTik wAP ac finally runs on PoE as intended, the four ports (2x1G, 2x100M) of the Fritz Box router are no longer overcrowded, I did have a good time repairing two of those switches easily and I didn’t even spend a penny on all that thanks to a few sellable items (plus brownie points for donating quite a few more). […]

10th May 2020 6th April 2021 By Bzzz In 1 Comment