Skip to main content

quick recollection on setting things up

  • If I can swear that the password is correct, then it's possible that I'm getting the ID wrong.

    Hadn't logged into the web server in a couple of months and was unable to SSH into it. After an hour or so, I ended up deleting the instance and recreating a clean instance (read: erasing everything).
    I then realized I'd been putting the wrong ID.
     
  • apt-get install
  • sudo apt-get install

Anyways, some links I visited when setting things up (pretty much a dump of whatever I copy-pasted to notes) :

Raspberry Pi
http://www.makeuseof.com/tag/optimize-the-power-of-your-raspberry-pi-with-raspbian/


Logging
http://docs.python.org/2/howto/logging-cookbook.html


Tornado - Python webserver that supports Websocket
http://stackoverflow.com/questions/2924991/what-popular-webservers-have-support-for-html5-websocket
http://lowpowerlab.com/blog/2013/01/17/raspberrypi-websockets-with-python-tornado/
http://stackoverflow.com/questions/11695375/tornado-identify-track-connections-of-websockets

Installing Python in Ubuntu
http://eli.thegreenplace.net/2011/10/10/installing-python-2-7-on-ubuntu/


Physical computing with Raspberry Pi
http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/robot/buttons_and_switches/


Comments

Popular posts from this blog

websockets and mobile networks and ssl

Gahhh. Just going to ramble on this one: Websockets is unstable going through cellular networks Searched Google and solution seems to be SSL connections Tried to implement, and it works to some extent,  but realized that I'll have to have both Apache, which was running my web front end, and Tornado both listen to 443 which cannot happen Realize finally that Tornado is a SERVER just like Apache Try to implement web client through Tornado It works but Websocket server and the web client still different instances so still can't have both listen, or that's what I'm thinking but I don't have time to think about it at present. Gotta sleep.

nodejs migration

Having been playing around with NodeJS recently,  I (naturally?) started re-writing some of the OpenSesame code using Node last night. I think I've only worked on it around 2 hours so far, but I've already set up a basic client interface (a socket.io chat tutorial rip) with a server that the Raspberry Pi can connect to and receive requests to open the door.  This is probably due to socket.io's socket management (socket.io is the WebSocket module for Node); for my first implementation, I had to manually write up a structure that managed sockets, but that is pretty much handled by socket.io. Also, the servo control logic is pretty much recycled (and the Raspberry Pi code is still Python), and I do remember spending some good time figuring that out.  Cool neverthelss. I'll probably keep both versions around.

dabbling with cylon

I'm playing around with Cylon JS whenever I have the time. in order to use the leap motion for control, the hand control will need to communicate with the pc that is connected to the leap motion device (leap motion does not provide an arm/linux driver). it seems that Cylon devices can communicate with each other through socket.io or http, and I am currently playing around with that.