OT: Lamp Powered by Ethernet Switch?
#1
Posted 05 July 2013 - 03:00 PM
#2
Posted 05 July 2013 - 08:16 PM
it's not clear to me what you are saying. I'm unclear because:
'ethernet switch' to me means 'a box with a bunch of rj45 jack for switching ethernet packets'. is that what you mean? or some other interpretation of 'switch'
'led lamp powered by the switch'. are you meaning: 'Power over Ethernet (PoE), that can power whatever, in this case happens to be an LED lamp'
'NP2 will communicate with ethernet'. I understand that, except how it relates to the switch and the lamp. Im guessing the so-connected NP2 is controlling the lamp?
If you do indeed mean 'I want to have an network controlled LED, managed by the NP2, connected through a PoE capable ethernet switch, and have the NP2 and the lamp be powered that way, without needed yet-another wall wart', here's some things:
* ethernet itself provides no (significant) power, but there is a standard for PoE whereby power can be delivered over the same twisted pair cable used for networking.
* and there are many non-standard implementations of supplying power over the networking cables, since this double-duty is a fairly common desire
* you need a switch (or whatever is at the other end of your cable) specifically designed to do this. It will be marked as being able to do PoE. If it is not so marked, then consider it not capable, since this is unusual and its not at all free for the manufacturer to support
* PoE supplies a pretty high voltage (and variable, since it is also subject to all sorts of IR losses along the line), and so will require some sort of regulation at your device anyway
It is a nice capability, and it's a real pity it's not more widespread. My house is littered with wall warts and dangly wires. You'd think it was the early 1900's.
On the other hand, if my interpretation is wildly not what you mean, then nevermind!
#3
Posted 06 July 2013 - 01:41 AM
#4
Posted 06 July 2013 - 01:55 AM
think nothing of it!
I believe the answer to your question is 'no'. The ethernet switch -- outside of something like PoE -- supplies no power at all to the various ports rj45. Indeed that is what PoE is for!
#5
Posted 06 July 2013 - 10:50 AM
Also tagged with one or more of these keywords: Led, ethernet, power, light
Hardware →
Netduino 3 →
Netduino 3 Power Measurement, ETCStarted by mbyamukama, 27 May 2016 Power, RTC, Sleep |
|
|||
Hardware →
Netduino Go →
Has anything changed?Started by Gorf, 03 Dec 2015 wifi, ethernet |
|
|||
Hardware →
Netduino 3 →
Ethernet Address configuration issuesStarted by claudio.serio, 12 Oct 2015 ethernet, ipaddress |
|
|||
Hardware →
Netduino Plus 2 (and Netduino Plus 1) →
N+2 & Adafruit 7-segment LED Display with HT16K33 BackpackStarted by LennySh, 25 Jul 2015 Adafruit, seven, segment, LED and 5 more... |
|
|||
General →
General Discussion →
Enhance RGB Led with TransistorsStarted by tridy, 16 Jun 2015 rgb, led, transistor, resistor |
|
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users