I recently aquired an APC UPS and connected it to my (Mac) server through USB. However, the load percentage is only updated (via pmset -g ps) when unplugging/plugging the USB cable. I found out it's only the DATA- line that has to be diabled for a second or so.
I wondered if using an NE555 in astable mode connected to an SPST analog switch (TS5A3157 or MAX4644 f.i.) will serve my purpose (switch off the data- line for a second or so every 30 seconds). Any info on (USB) side effects would be very helpful.
(And yes, I've searched the interwebs, contacted APC, installed latest software/firmware et al. ;-)
Thanx in advance for any info.