On Wed, Oct 23, 2013 at 11:05:19AM +0800, Andrew Elwell wrote:
> > I would move the power to the other end of the cable if possible (you
> > could use a 5V wallwart at the computer end and run it through a
> > separate pair, with just a cap on the remote end). Better if you can
> > put the wallwar
I don't know of a consensus, but I use the following:
Standard 4-conductor colors:
1: VDD (GRN)
2: N/C (YEL)
3: Data (RED)
4: GND (BLK)
In an RJ45 jack this gives the following for T568B:
3: VDD (WHT/GRN)
4: N/C (BLU)
5: DATA (WHT/BLU)
6: GRD (GRN)
If I did it again, I'd probably swap the Data
> I would move the power to the other end of the cable if possible (you
> could use a 5V wallwart at the computer end and run it through a
> separate pair, with just a cap on the remote end). Better if you can
> put the wallwart at the remote end too (minimise crosstalk).
ah OK - so make the Vcc
On Wed, Oct 23, 2013 at 10:42:05AM +0800, Andrew Elwell wrote:
> Leaping in on this for ideas:
>
> > That said, the voltage drop should be *unevenly* distributed between Vcc
> > and GND, so don't have 2 Vcc wires + 2 GND wires but rather 1 Vcc wire +
> > 3 GND wires. Voltage drop on the Vcc line i
Leaping in on this for ideas:
> That said, the voltage drop should be *unevenly* distributed between Vcc
> and GND, so don't have 2 Vcc wires + 2 GND wires but rather 1 Vcc wire +
> 3 GND wires. Voltage drop on the Vcc line isn't "seen" by the bus
> protocol, on the GND wires it's causing problems
Am 27.09.2013 08:24, schrieb Markus Gaugusch:
>
> So my question is: How can I improve the power supply on my bus?
>
I feed +8V to my extra power lines and have a small 5V regulator at any
tap.
When powering devices through the bus cable, you have to take care the
ground level isn't lifted too hig
