Wednesday, May 13, 2020

Electrostatics …the branch of physics that studies the nature of charges that’s not moving. - ppt video online download

Electrostatics …the branch of physics that studies the nature of charges that’s not moving. - ppt video online download: Static Electricity & Electric Current How are they related? What’s the difference in them? How do they relate do the study of electricity? Where (in our daily lives) do we see examples of their use? Can you measure them? How?

Friday, June 9, 2017

mongodb gui for ARM (raspberry pi) device

https://github.com/agirbal/umongo


Take Screenprint in Raspberry pi

Install scrot

sudo apt-get install scrot

To select a frame
$ scrot -s 

Cloud 9 IDE on raspberry pi

ATOM ide doesn't support on ARM devices, so the next choice would be cloud 9.

git clone git://github.com/c9/core.git c9sdk
cd c9sdk
scripts/install-sdk.sh
~/workspace/c9sdk/server.js -l 0.0.0.0 -p 8080 -a : -w /home/pi/workspace/ 


http://localhost:8080/ide.html


Sunday, December 4, 2016

OpenHab running on my Raspberry Pi.

OpenHab running on my Raspberry Pi.


Changing port number on openHAB 2.0

export OPENHAB_HTTP_PORT=8011

The above export was not working, so i added the below property

sudo nano /etc/default/openhab2

OPENHAB_HTTP_PORT=8090
OPENHAB_HTTPS_PORT=8053

Battery Status Linux

upower -i $(upower -e | grep BAT) | grep --color=never -E "state|to\ full|to\ empty|percentage"

amesh@linux-3ykp:~> upower -i $(upower -e | grep BAT) | grep --color=never -E "state|to\ full|to\ empty|percent
age"
   state:               charging
   time to full:        58.8 minutes
   percentage:          69%
ramesh@linux-3ykp:~> upower -i $(upower -e | grep BAT) | grep --color=never -E "state|to\ full|to\ empty|percent
age"
   state:               discharging
   time to empty:       32.0 hours
   percentage:          70%