Displaying 5 results from an estimated 5 matches for "max3232".
2018 Jul 04
1
FE700VA over USB? controlling UPSes over network?
Lately I replaced my 10+-year-old server with a nano-ITX-type one
that has USB but not old serial ports. I connected my FE700VA to
DB25-to-9-to-USB cables, but haven't been able to set it up. Apparently
my DB9-to-USB cable (Prolific Technology, Inc. PL2303 Serial Port) has
issues needing old software (setserial?) and some new software
(fconfigure) being changed. Has anyone managed
2017 Jun 25
0
Why are LAN ports not standard on UPSs these days?
...ecause I originally
felt they did a good job of power filtering. I use a NUT master running on
a Raspberry Pi 3 which is easy to maintain and gets current updates via its
Debian roots. I have two environments, one with a much older UPS which has
only serial, but the addition of a tiny card with a MAX3232 level-shifter
https://www.sparkfun.com/products/11189 allows the RPi to communicate
nicely, the second environment uses a USB connection from the RPi to the
UPS. Both work very well with NUT, and then communicate with NUT clients
on the other systems. I like that the RPi allows me to separate the...
2017 Jun 25
3
Why are LAN ports not standard on UPSs these days?
...> master running on a Raspberry Pi 3 which is easy to maintain and gets
> current updates via its Debian roots.
Ah . . another good reason to get a RPi going . .
> I have two environments, one
> with a much older UPS which has only serial, but the addition of a
> tiny card with a MAX3232 level-shifter
> https://www.sparkfun.com/products/11189 allows the RPi to communicate
> nicely, the second environment uses a USB connection from the RPi to
> the UPS. Both work very well with NUT, and then communicate with NUT
> clients on the other systems. I like that the RPi allow...
2017 Jun 25
6
Why are LAN ports not standard on UPSs these days?
People,
A couple of decades before I was retired and was still working for other
people I had cause to install UPSs and they usually had RS232 ports to
allow the setting up of shutdown scripts to UNIX / Linux servers. Now,
after not having to be concerned by those issues for some time - most of
my little web sites have been on Digital Ocean or other suppliers VMs
for a long time - I am
2017 Jun 25
6
Why are LAN ports not standard on UPSs these days?
People,
A couple of decades before I was retired and was still working for other
people I had cause to install UPSs and they usually had RS232 ports to
allow the setting up of shutdown scripts to UNIX / Linux servers. Now,
after not having to be concerned by those issues for some time - most of
my little web sites have been on Digital Ocean or other suppliers VMs
for a long time - I am