From f9718ec295b11da01382ade67480d81c8f80cff6 Mon Sep 17 00:00:00 2001 From: gferg <> Date: Wed, 9 Jun 2004 23:26:00 +0000 Subject: [PATCH] updated --- .../docbook/Home-Electrical-Control.sgml | 552 +++++++++--------- 1 file changed, 276 insertions(+), 276 deletions(-) diff --git a/LDP/howto/docbook/Home-Electrical-Control.sgml b/LDP/howto/docbook/Home-Electrical-Control.sgml index c7a545d1..20ab40b0 100644 --- a/LDP/howto/docbook/Home-Electrical-Control.sgml +++ b/LDP/howto/docbook/Home-Electrical-Control.sgml @@ -1,276 +1,276 @@ - -
- - Home Electrical Device Control HOWTO - - Rui - Li - -
ruili@worldnet.att.net
- - - - This HOWTO will tell you how to use Linux to control your home electrical - devices. You will only need to make a very - simple circuit to control almost any kind of electrical - device using Linux! - - 2003-02-08 - - - 0.008 - 2003-02-08 - Goldencat - - - 0.007 - 2002-02-12 - RL - - - 0.006 - 2001-06-27 - JEY - - - 0.005 - 2001-06-13 - RL - - - 0.004 - 2001-06-12 - JEY - - - - Joy - Yokley - Coverted document from Linuxdoc to DocBook v4.1 (SGML). - - - - Introduction - Many people asked me, "Is it possible to control some electrical - stuff [e.g. lights, radio, tv, etc.] by using a home computer?" The answer is YES. - The process is very easy, and anyone can do it. - After I read the Coffee Machine Mini-HOWTO, I got an idea of how to control - my home electrical appliances. I made some modifications on the circuit discussed in that - Coffee Machine Mini-HOWTO, and wrote a simple program. The circuit can - control many small electrical devices.^_^ You can use crontab - to set your lights to come on automatically or to turn on your airconditioner. I use it to control my VCR and VCD ( I do still need some modification on VCR/VCD). - By writing a simple program, you can control everything over the web. You can use - telnet with SSH and your telephone dial in to control all the appliances you have on the circuit. - This circuit is VERY SIMPLE. Even if you don't know anything - about circuits, you can set up this circuit. - - - System Requirement - Get any computer that is running Linux and has a working parallel port. :) - I'm using a 386DX with 4MB RAM 40MB HD. - You will need gcc to compile the program. If you want to use telnet or SSH, - you will also need telnetd or sshd. You can write your own - program by using ioperm and outb. If you would like to - use my program, you will need g++. - Click the following link to download my program. You will need g++ to compile it. - edc.sourceforge.net/paralle.tar.gz. - - - Electronic Circuit - The data line of the parallel port can provide between 0 and 5 volts. - Therefore, we can use this line to control a relay and let that relay control - an electrical device. - Use pins 2 through 9 to get +5V - Use pins 18 through 25 as the Ground - - - ____________________________________________________________ - / \ - \ 13 12 11 10 9 8 7 6 5 4 3 2 1 / - \ / - \ 25 24 23 22 21 20 19 18 17 16 15 14 / - \______________________________________________________/ - - - - - | Vcc for Relay - | - | - / -------+--------| |---------| -P data 4.7K B / c | 1N4002 |_| |------- ------------/\/\/\/\---------+-----| NPN _____ | relay |home device - | \ e /_\ |-| |------- - LED X \ +--------| |---------| -P Ground | | | -----------------------------+-------+--------+ -Relay Ground | ----------------------------------------------+ - - - Below is the key to the diagram above: - P data parallel port data line(pin 2 to pin 9, use any) - -P Ground parallel port ground (pin 18 to pin 25, use any) - -Vcc depends on the type of your relay. I'm using 12VDC - -Relay Ground the ground for 12VDC - -4.7k 4.7K resistor - -NPN C2235 NPN transistor - -1N4002 1N4002 diode - -LED light emitting diode - -relay a coil relay - - +5 volts from parallel port will turn on the relay. Once the relay is on, - the device connected to that relay will be on. When the parallel port's data - line goes back to 0, it will turn off the relay, and device is off. - - - Examples of Relays - The diagrams below are used to explain how relays work. - - The relay itself is just a switch as seen in the diagram below: - -relay power off relay power on - - |3 |3 - | | - | | - o o - \ | - o \ o - | | - | | - | | - |4 |4 - - - The diagram below demonstrates the setup of a 4 pin relay. - - - ____________________________ - | | - 1 | | 3 - -----|---------s o----------|------- - | coil s \switch | - 2 | s \ | 4 - -----|---------s o- \-------|------- - | | - | | - | | - |__________________________| - - - - In the diagram above, pin 3 and pin 4 are disconnected by default. - When you send +12V between pin 1 and pin 2, - it will turn on a switch, and pin 3 and 4 are now connected. - - - - The following is a 5 pin relay: - - - _______________________________ - | | - 1 | | 5 - ---------|---+ o------------|---------------- - | |-----------/---- s | - | / s | - 3 | / s | - ---------|-----------o/ coil s | 4 - | o---s-------|---------------- - | | | - | | | - 2 | | | - ----------|---------------------+ | - |_____________________________| - - - In the above diagram pin 3 is connected to pin 5, by default. - By sending +12V between pin 1 and pin 2, you will - will turn on a switch. Pin 1 and pin 2 will disconnect, - and pin 5 and pin 4 will connect. - - - relay power off relay power on - - |5 |5 - | | - | | - o o - \ | - o \ o o - | o | | - | | | | - | | | | - 4| |3 4| |3 - - - Some relays may have more that 5 pins. More pins just means there are more switches. - I wrote a simple program that can control 8 relays. The program is available at the following location and - will need g++ in order to be able to use this program. - http://edc.sourceforge.net/paralle.tar.gz - A complete circuit can control up to eight relays, that means that a complete circuit can control - eight different devices. You will need a DB25 connector. Using a parallel - switch cable, connect this relay board to your computer. I put the relay board in a box - and use a parallel switch cable to connect it to my Linux box: -Panel: LED, Switch Back: DB25 connector - Below is an example of how a relay board would connect with your electrical device: - - CONNECTED RELAY BOARD - - - +-----+ power outlet - 1 _______3 | __|________ || || - --| |---------+ | | | || || - 2 |relay|4 | (o) (o) | _||___||__ - --|_____|----+ |------|---| | | - | | | | - | +------------+ | | plug - ground | | hot | | - | | | | - __|_|__ | | - | | | | |________| - | | | | plug - | | | | - |_|_|_| (i know it doesn't look like a plug, but it's a plug :-) ) - || || - || || - - - - To connect the system, just connect your home electrical device to the power outlet. That is it! - You don't need to make any change on the electrical device. And you can - connect any kind of device to that power outlet. Plug this power outlet into any wall outlet. - - - To see photos of what the finished product looks like, go to the following sites: - http://edc.sourceforge.net/p1.jpg - http://edc.sourceforge.net/p2.jpg - http://edc.sourceforge.net/p3.jpg - - The following URL shows a complete electronic circuit (control 8 devices): - http://edc.sourceforge.net/01.png - - - Special Thanks - Special thanks to Rufus Chang - rufus@chu.url.com.tw. - Special thanks to Chih-Wei Huang - cwhuang@linux.org.tw. - - - Copyright and License - Copyright Rui Li 2000-2001. License is GNU GPL, but it is requested that - you retain the author's name and email on all copies. Please keep my name and - e-mail address when you are copying this HOWTO. - - -
+ +
+ + Home Electrical Device Control HOWTO + + Rui + Li + +
ruili@worldnet.att.net
+ + + + This HOWTO will tell you how to use Linux to control your home electrical + devices. You will only need to make a very + simple circuit to control almost any kind of electrical + device using Linux! + + 2003-02-08 + + + 0.008 + 2003-02-08 + Goldencat + + + 0.007 + 2002-02-12 + RL + + + 0.006 + 2001-06-27 + JEY + + + 0.005 + 2001-06-13 + RL + + + 0.004 + 2001-06-12 + JEY + + + + Joy + Yokley + Coverted document from Linuxdoc to DocBook v4.1 (SGML). + + + + Introduction + Many people asked me, "Is it possible to control some electrical + stuff [e.g. lights, radio, tv, etc.] by using a home computer?" The answer is YES. + The process is very easy, and anyone can do it. + After I read the Coffee Machine Mini-HOWTO, I got an idea of how to control + my home electrical appliances. I made some modifications on the circuit discussed in that + Coffee Machine Mini-HOWTO, and wrote a simple program. The circuit can + control many small electrical devices.^_^ You can use crontab + to set your lights to come on automatically or to turn on your airconditioner. I use it to control my VCR and VCD ( I do still need some modification on VCR/VCD). + By writing a simple program, you can control everything over the web. You can use + telnet with SSH and your telephone dial in to control all the appliances you have on the circuit. + This circuit is VERY SIMPLE. Even if you don't know anything + about circuits, you can set up this circuit. + + + System Requirement + Get any computer that is running Linux and has a working parallel port. :) + I'm using a 386DX with 4MB RAM 40MB HD. + You will need gcc to compile the program. If you want to use telnet or SSH, + you will also need telnetd or sshd. You can write your own + program by using ioperm and outb. If you would like to + use my program, you will need g++. + Click the following link to download my program. You will need g++ to compile it. + edc.sourceforge.net/paralle.tar.gz. + + + Electronic Circuit + The data line of the parallel port can provide between 0 and 5 volts. + Therefore, we can use this line to control a relay and let that relay control + an electrical device. + Use pins 2 through 9 to get +5V + Use pins 18 through 25 as the Ground + + + ____________________________________________________________ + / \ + \ 13 12 11 10 9 8 7 6 5 4 3 2 1 / + \ / + \ 25 24 23 22 21 20 19 18 17 16 15 14 / + \______________________________________________________/ + + + + + | Vcc for Relay + | + | + / -------+--------| |---------| +P data 4.7K B / c | 1N4002 |_| |------- +-----------/\/\/\/\---------+-----| NPN _____ | relay |home device + | \ e /_\ |-| |------- + LED X \ +--------| |---------| +P Ground | | | +----------------------------+-------+--------+ +Relay Ground | +---------------------------------------------+ + + + Below is the key to the diagram above: + P data parallel port data line(pin 2 to pin 9, use any) + +P Ground parallel port ground (pin 18 to pin 25, use any) + +Vcc depends on the type of your relay. I'm using 12VDC + +Relay Ground the ground for 12VDC + +4.7k 4.7K resistor + +NPN C2235 NPN transistor + +1N4002 1N4002 diode + +LED light emitting diode + +relay a coil relay + + +5 volts from parallel port will turn on the relay. Once the relay is on, + the device connected to that relay will be on. When the parallel port's data + line goes back to 0, it will turn off the relay, and device is off. + + + Examples of Relays + The diagrams below are used to explain how relays work. + + The relay itself is just a switch as seen in the diagram below: + +relay power off relay power on + + |3 |3 + | | + | | + o o + \ | + o \ o + | | + | | + | | + |4 |4 + + + The diagram below demonstrates the setup of a 4 pin relay. + + + ____________________________ + | | + 1 | | 3 + -----|---------s o----------|------- + | coil s \switch | + 2 | s \ | 4 + -----|---------s o- \-------|------- + | | + | | + | | + |__________________________| + + + + In the diagram above, pin 3 and pin 4 are disconnected by default. + When you send +12V between pin 1 and pin 2, + it will turn on a switch, and pin 3 and 4 are now connected. + + + + The following is a 5 pin relay: + + + _______________________________ + | | + 1 | | 5 + ---------|---+ o------------|---------------- + | |-----------/---- s | + | / s | + 3 | / s | + ---------|-----------o/ coil s | 4 + | o---s-------|---------------- + | | | + | | | + 2 | | | + ----------|---------------------+ | + |_____________________________| + + + In the above diagram pin 3 is connected to pin 5, by default. + By sending +12V between pin 1 and pin 2, you will + will turn on a switch. Pin 1 and pin 2 will disconnect, + and pin 5 and pin 4 will connect. + + + relay power off relay power on + + |5 |5 + | | + | | + o o + \ | + o \ o o + | o | | + | | | | + | | | | + 4| |3 4| |3 + + + Some relays may have more that 5 pins. More pins just means there are more switches. + I wrote a simple program that can control 8 relays. The program is available at the following location and + will need g++ in order to be able to use this program. + http://edc.sourceforge.net/paralle.tar.gz + A complete circuit can control up to eight relays, that means that a complete circuit can control + eight different devices. You will need a DB25 connector. Using a parallel + switch cable, connect this relay board to your computer. I put the relay board in a box + and use a parallel switch cable to connect it to my Linux box: +Panel: LED, Switch Back: DB25 connector + Below is an example of how a relay board would connect with your electrical device: + + CONNECTED RELAY BOARD + + + +-----+ power outlet + 1 _______3 | __|________ || || + --| |---------+ | | | || || + 2 |relay|4 | (o) (o) | _||___||__ + --|_____|----+ |------|---| | | + | | | | + | +------------+ | | plug + ground | | hot | | + | | | | + __|_|__ | | + | | | | |________| + | | | | plug + | | | | + |_|_|_| (i know it doesn't look like a plug, but it's a plug :-) ) + || || + || || + + + + To connect the system, just connect your home electrical device to the power outlet. That is it! + You don't need to make any change on the electrical device. And you can + connect any kind of device to that power outlet. Plug this power outlet into any wall outlet. + + + To see photos of what the finished product looks like, go to the following sites: + http://edc.sourceforge.net/p1.jpg + http://edc.sourceforge.net/p2.jpg + http://edc.sourceforge.net/p3.jpg + + The following URL shows a complete electronic circuit (control 8 devices): + http://edc.sourceforge.net/01.png + + + Special Thanks + Special thanks to Rufus Chang + rufus@chu.url.com.tw. + Special thanks to Chih-Wei Huang + cwhuang@linux.org.tw. + + + Copyright and License + Copyright Rui Li 2000-2001. License is GNU GPL, but it is requested that + you retain the author's name and email on all copies. Please keep my name and + e-mail address when you are copying this HOWTO. + + +