Re: [pygame] Making UPS smart with Pygame and Joystick input socket

[James Paige <Bob@xxxxxxxxxxxxxxxxxxx>]

Oh! I understand now! You are going to take a joystick, disassemble it, 
and splice it together with your UPS so the buttons get pushed as you 
describe.

Pygame's joystick support is nice and simple and easy to use-- the only 
problem I could forsee is that AKAIK you have to initialize a pygame 
window before you can read joystick events. You said this was a server, 
so if it is not running a graphical environment, initializing that 
window could possibly be a problem.

Otherwise, sounds like fun :)

---
James Paige

On Wed, Apr 13, 2011 at 04:55:53PM +0200, SlawKo.skrzynka@xxxxxxxxx wrote:
> 1) I am sure my UPS is neither being read as a Joystick nor any other device. It is because it has only 2 connections: AC-input and AC-output. 
> 2) This UPS is made by "Ever" type "MP300".
> 3) It is connected to the computer by AC-output socket on the UPS and AC-input of the PSU in my PC. It has no data connections that "smart UPS" usually have that connect to the COM port of a computer and can be monitored by special software.
> That is the point.
> I would like to make use of existing gameport (that is not used by the server at this moment) and perform basic communication, like this:
> Button_1 OFF , Buton_2 OFF -> state A
> Button_1 ON , Buton_2 OFF -> state B
> Button_1 ON , Buton_2 ON -> state C
> The other actions described already before.
> For this task some piece of software is needed that reads the Joystick port.
> Therefore my interest in Pygame's Joystick module.
> The necessary hardware upgrade to the UPS is very simple and requires just 2 additional relays an some cabling. It will electrically be equivalent to a joystick hardware that simply connect 2 pairs of wires by the button. In this application the human finger and the button switch is replaced by a relay.
> 
> 
> SlawKo
> 
> UÅytkownik "James Paige" <Bob@xxxxxxxxxxxxxxxxxxx> napisaÅ(a): 
> > Temat: Re: [pygame] Making UPS smart with Pygame and Joystick input socket
> > Data: 2011-04-13 1:16
> > Nadawca: "James Paige" <Bob@xxxxxxxxxxxxxxxxxxx>
> > Adresat: pygame-users@xxxxxxxx; 
> > 
> > Are you sure your UPS device is actually being read as a Joystick? 
> > Exactly what kind of UPS do you have, and how is it connected to the 
> > computer?
> > 
> > There are probably better tools for doing what you want to do than 
> > pygame.
> > 
> > ---
> > James Paige
> > 
> > On Wed, Apr 13, 2011 at 12:42:18AM +0200, SlawKo.skrzynka@xxxxxxxxx wrote:
> > > Hello,
> > > 
> > > I would like to get some information whether it would be possible to use Pygame's Joystick package to process simple signal from UPS to trigger clean shutdown of the Linux machine.
> > > 
> > > I would like to use 2 buttons from Joystick interface to sense 3 states from UPS:
> > > A) AC power OK
> > > B) no AC power - using battery
> > > C) battery low - shutdown now
> > > 
> > > The program should run as a demon and check every 10 second if the UPS entered B state. Then would monitor every second if UPS reached C state. At this moment daemon should copy files stored in RAMdisk onto HDD and request runging programs to close and finally invoke system shutdown.
> > > 
> > > This architecture would improve my Linux net_router/web_proxy/home_automation/etc. server with simple solution using existing gameport, 2 relays and some cabling, upgrading it to a "smart system".  :)
> > > 
> > > 
> > > Is it difficult to create this piece of software ?
> > > 
> > > 
> > > Kind Regards,
> > > 
> > > SlawKo
> > > 
> > > ----------------------------------------------------------------
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> > > 
> > > 
> > 
> 
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