This morning after thinking about this for several months I ordered a 0-30v / 0-5a bench power supply. I have built my own supplies for projects using wall-warts and regulators, but each time I start a new project I have to take parts from old ones. I plan to use this for development and testing then when the project is wrapping up I will build a supply to keep with the project.
Tonight I finished all 3 of the Ledtricks controllers and snapped together the DB25 to RJ45 connector. I don’t yet have any way to test it since I haven’t started building the matrix. I thought about setting something up on the breadboard but I think that would take more time then it is worth! The boards look great.
ups.conf
[tlups]
driver = newhidups
port = auto
desc = “Tripp Lite Stemple USB”
upsd.conf
ACL all 0.0.0.0/0
ACL localhost 127.0.0.1/32
ACCEPT localhost
REJECT all
upsmon.conf
MONITOR tlups@localhost 1 monuser password master
FINALDELAY 2
SHUTDOWNCMD “/sbin/shutdown -h +0″
upsd.users
[monuser]
password = password
allowfrom = local
upsmon master
/etc/default/nut
# start upsd
START_UPSD=yes
# start upsmon
START_UPSMON=yes
I picked up a 1000vA UPS at Costco, the Tripp-lite OMNI1000LCD. It works with the NUT project. In testing I configured it via USB to shutdown the server. At this point it looks like I can get 15-20 minutes from battery before shutdown point.
I found that the UPS does not show up in lsusb unless I plug in a USB hub then plug in the UPS to the hub. Not sure why that is yet. The APC has no problem being detected.
An APC Back-Ups 350 is now hooked to the macMini. OSX configured the connection without any effort.
I have an older APC 250 that will be moved to the closet for communications support. The 3rd battery in its 10 year service was placed in it yesterday.