The IR829's we use at work are absolutely remotely accessible and configurable, with no user interaction. They include GPS and cellular antennas, and with the correct credentials can be viewed through Cisco's IoT web platform.
In other words, I would never in a million years trust these second-hand. Best case is the org sunset it properly, worst case is when their data breach becomes a back door into your network, complete with current location.
Much less interesting and DIY, but I discovered cheap USB-C PD to barrel connector cables exist for a variety of different diameters and voltages not so long ago, and they've been great. So convenient to ditch a bunch of wall-warts and plug into a single multi-port GaN charger that can sit on a desk at the end of a normal mains cable.
Over time I've been converting lots of my equipment to USB-C. Having tried various PD sinks, I've settled on CH224K. It works very well (in fact, I'm typing this on an old HP laptop that's powered from USB-C using a CH224K adapter I made). Would recommend.
These USB-C PD trigger boards [0] are just great for purposes like this. They are cheap and available with either a preset voltage like the author seems to use, or semi-fixed voltage selection (by putting solder-bridges on number of open connections/pads) or - very useful for tinkering - with a set of tiny switches that allow to change the voltage in a few seconds.
I think they are very recommended to have in your parts drawer if you like playing with electronics.
[0] “trigger boards” because they don’t do anything directly with the voltages and power. They only negotiate with the power supply which combination of voltage and maximum current (and therefore power) it should provide.
The markings "GND" "IGN" and "BAT" evoked something automotive, and a quick look at the manual reveals that this router was indeed designed with that in mind:
I don't like how it is a fire hazard though. What an earth, maybe the Cisco will run a self-test every year to check out something and it burns down, because the author used 3.25A board for 6A max drawdown. I hope at least he configured the 24V and then the 6A is just 3A probably.
The IR829's we use at work are absolutely remotely accessible and configurable, with no user interaction. They include GPS and cellular antennas, and with the correct credentials can be viewed through Cisco's IoT web platform.
In other words, I would never in a million years trust these second-hand. Best case is the org sunset it properly, worst case is when their data breach becomes a back door into your network, complete with current location.
Much less interesting and DIY, but I discovered cheap USB-C PD to barrel connector cables exist for a variety of different diameters and voltages not so long ago, and they've been great. So convenient to ditch a bunch of wall-warts and plug into a single multi-port GaN charger that can sit on a desk at the end of a normal mains cable.
Over time I've been converting lots of my equipment to USB-C. Having tried various PD sinks, I've settled on CH224K. It works very well (in fact, I'm typing this on an old HP laptop that's powered from USB-C using a CH224K adapter I made). Would recommend.
https://hackaday.io/project/187112-ch224k-usb-pd-decoy
https://github.com/wagiminator/Power-Boards/tree/master/USB-...
https://www.laskakit.cz/user/related_files/ch224ds1.pdf
These USB-C PD trigger boards [0] are just great for purposes like this. They are cheap and available with either a preset voltage like the author seems to use, or semi-fixed voltage selection (by putting solder-bridges on number of open connections/pads) or - very useful for tinkering - with a set of tiny switches that allow to change the voltage in a few seconds.
I think they are very recommended to have in your parts drawer if you like playing with electronics.
[0] “trigger boards” because they don’t do anything directly with the voltages and power. They only negotiate with the power supply which combination of voltage and maximum current (and therefore power) it should provide.
The markings "GND" "IGN" and "BAT" evoked something automotive, and a quick look at the manual reveals that this router was indeed designed with that in mind:
https://www.cisco.com/c/en/us/td/docs/routers/access/800/829...
I don't like how it is a fire hazard though. What an earth, maybe the Cisco will run a self-test every year to check out something and it burns down, because the author used 3.25A board for 6A max drawdown. I hope at least he configured the 24V and then the 6A is just 3A probably.
The power profiles include a maximum current. If the device exceeds the current draw for the chosen profile, the power supply cuts the power.
The wikipedia article might be more accessible than the spec: https://en.wikipedia.org/wiki/USB_hardware#USB_Power_Deliver...
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> draws 6 amps max
What kind of router needs over 100W to run? Does it expect to do PoE on every line?