Computing, HowTo, Technology

IP Cam keeps disconnecting [SOLVED]

by  • 

I have several IP cams, including some of the popular  Amcrest/Foscam FI8910Ws. They were working fine, till one day they were not. Power cycling brought them back online, but they dropped off after only an hour or two. I could not find any clues on the net as to what was happening. What was strange to me that this behavior was evident in more than one camera, so it most likely was not a single camera failure. There were reports of these cameras losing track of their MAC addresses, and a suggested fix. It did not help.

It occured to me that I had upgraded my internal wired network from 100Mb to gigabit. I took an old 10/100 ethernet switch and put it between the network and the camera, on the hope that no gigabit timing would make it through the old switch. Lo! (and also Behold!) the cameras are now all permanently back on line. My guess is that after a while, on a gigabit circuit, some timing event crashes the cameras’ network interface and they become unreachable.

Computing, HowTo

HowTo automatically start a scheduled Zoom session on Linux

by  • 

It is handy to be able to setup and start a zoom session without actually having to be there to click on a menu. For instance, you may have regularly scheduled sessions between local and remote family members that you may not need to be part of.

Using the cron facility in Linux, it is possible to start such sessions (or to connect to someone else’s scheduled meeting) by invoking a simple script.

In the meeting invitation there should be a URL for joining, which looks like:
http://us02web.zoom.us/j/1234567?pwd=FXbycXGo85EqxvxJzd
where 1234567 is the meeting ID and FXbycXGo85EqxvxJzd is the encrypted password.

Create a shell script to invoke the zoom session (e.g.: startzoom.sh), changing the syntax above slightly:

#!/bin/sh
# autostart a scheduled meeting
#/usr/bin/xdg-open\
"zoommtg://zoom.us/join?action=join&confno=CONF-ID&pwd=ENCRYPTED-PASSWORD"
/usr/bin/xdg-open\
"zoommtg://zoom.us/join?action=join&confno=1234567&pwd=FXbycXGo85EqxvxJzd"

Run this script from crontab of the user who owns the zoom account. For a periodically scheduled meeting a user’s crontab entry might look like:
58 9 * * Fri DISPLAY=:0 /bin/bash /path-to-script/startzoom.sh
This entry will automatically start the a zoom session at two vWAminutes to 10 AM every Friday. The ‘DISPLAY=:0′ setting is needed, since it tells the computer which display to use when it is running the program from cron, which has no terminal or display connection.

 

Dance, Performance

The Healer

by  • 

Review:”The Healer”

Co-presented by RAWdance and ODC Theater
Choreography: Katrina Wong with the performers
Performance. Michaela Cruze, Juliann Witt, Katerina Wong, Stacy Yuen
Cinematography: Jenny Chu: Editing: Loren R. Robertson:
Original Score: Daniel Berkman: Scenic Design:Chad Owens: Lighting: Del Medoff
Video produced by Loren Robertson Productions

The dance is “ holistic online experience and virtual dance performance. The Healer creates space for personal reflection, communal breath, and universal release.

The dance is a quartet for four women, costumed in light colored tops (not clear on the screen the exact color), each wearing a different colored skirt. Three of the four do solos. The technique demonstrated used the conventions of ballet, modern, and I was told, jazz and acrobatics. There were lots of arabesques and leaping, circle formations and sections demonstrating support and balance for an individual dancer. In those sections, the soloist appeared to go into her private place. With dancers on screen being less than one-quarter inch, it was difficult to witness those sections.

When is a dance performance a public event and when is it a personal, internal experience? Can it be both? This dance, it must be assumed, is both.

Years ago, for an ODC magazine (no longer published), I wrote an article entitled, “Dance is Not Therapy.” Every dancer finds her/his way of bringing the ‘self’ to the performance, but, as a dance therapist who has dealt with both physical and emotional concerns, I believe very strongly that there is difference in intention and craft that should be redefined in performance.

“The Healer” was a filmed dance: thus there was no live audience. One dancer remarked in the discussion after the event, that having no visible audience ‘freed” her from any critical sense. She was therefore dancing for herself and with the others. She especially enjoyed her ‘breathing’ experience.

The dancers were charming and skilled. The choreography was pleasant, predictable and generally easy to watch. I found the musical score fascinating. (Thank you Daniel Berkman!) Yet, TV dance, Zoom dance, film dance is not kinesthetic experience since the physical energy, so vital to dance communication, is not transmitted.

Long discussions preceded and followed the performance of “The Healer”. This writer would rather see (and acknowledge) the dance energy than get lost in words.

From left, Katerina Wong, Juliann Witt, Michaela Cruze (Stacey Yuen occluded) in RAWdance’s The Healer.
Photo credit:

Joanna G. Harris
2/1/21