@eevblog I went into a battery size standard rabbit hole after your boom box video.
Cool to see that D cells were introduced in 1898! I only use them in my trash can (auto open), but according to stats they are nowhere near as popular as they used to be.
@DuffautLuka Hey yes you will want to use a buck converter most likely. ~24/48v is what switches will output according to the standard.
For most of the cheap (under $1) buck converters 48v might be out of range so I'd configure the chip to request 24v
Made a Gigabit PoE (Power-over-Ethernet) splitter today. It was a nice exercise in understanding how PoE works, and how data/power can run on the same cable using a Pulse Transformer.
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Moxy is a Homelab IoT "Platform" (for lack of a better term) that blurs the lines between hardware and software in the homelab: https://t.co/AbE3CVsL9l
It's been a really fun project, I hope it'll encourage more cross-pollination of hobby electronics and networking!
I made a load sharing controller pcb using @ADI_News LTC4416 to power a server with 2 12v 802.3at power over ethernet splitters. Does a really good job distributing the load.
@SwapnilBMeshram You probably want to use 2 MOSFETs in series like Figure 4 (in the above design I use 2 in series and 2 in parallel for each power source so 8 total MOSFETs).
E1 and E2 I connect to V1 and GND respectively with a high value resistor in case you want to use external ctrl later
@TheDokJ If you just looking to power with PoE rather than make a DIY project, I would go with the units for sale on Amazon/ebay. Usually they go for about $10 each and come in variety of connectors/voltages.
@TheDokJ Depending on your PoE switch and voltage you're using, buck converter has to be within that range.
If it is an important piece of equipment I would make sure to use an isolated converter, like this:
https://t.co/IcV680KyRY
I have ten RP2040 Stamp boards to give away!
Show me a design using the Stamp and get a chance to have a module shipped to you!
You can find the footprints here: https://t.co/LroRIiWnlJ and there is a pre-alpha datasheet here:
https://t.co/KcZHA48tdi
RT for reach are welcome
Anyone ever used a 555 timer to limit power consumption on a battery-powered device?
I wrote up a little post about using the circuit to extend battery life of my solar powered weather station from 3-5 days to 3-5 weeks!
https://t.co/S67KKpaaVL
@mylim Do you have the link to the datasheet of the transformer? Then you could compare the pinout of them. My first guess is 16 pin would be without center tap pins.