Comments on: Print Server Power Control Hack http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/ I AM the system administrator. Who do I call? Wed, 25 Aug 2010 01:21:52 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: george http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-144 george Thu, 22 Jul 2010 15:10:11 +0000 http://blog.rhysgoodwin.com/?p=94#comment-144 Brian > try using curl to po or some php in linux to connect and post 1 byte Brian > try using curl to po or some php in linux to connect and post 1 byte

]]> By: Rhys http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-131 Rhys Mon, 07 Jun 2010 23:07:18 +0000 http://blog.rhysgoodwin.com/?p=94#comment-131 Yea, you'll just have to see how you go but I couldn't get it working without inverting strobe line with the chip. Yea, you’ll just have to see how you go but I couldn’t get it working without inverting strobe line with the chip.

]]> By: Brian http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-130 Brian Mon, 07 Jun 2010 13:45:02 +0000 http://blog.rhysgoodwin.com/?p=94#comment-130 I haven't got that chip yet however i've connected up the status pin and it outputs 'online' i've put an led on 3&21 and it's lit? I haven’t got that chip yet however i’ve connected up the status pin and it outputs ‘online’ i’ve put an led on 3&21 and it’s lit?

]]> By: Rhys http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-129 Rhys Mon, 07 Jun 2010 13:35:52 +0000 http://blog.rhysgoodwin.com/?p=94#comment-129 The 74LS04 chip should fool the print server into thinking that everything is "ok" and ready to receive data. The 74LS04 chip should fool the print server into thinking that everything is “ok” and ready to receive data.

]]> By: Brian http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-128 Brian Mon, 07 Jun 2010 13:30:18 +0000 http://blog.rhysgoodwin.com/?p=94#comment-128 Ah i'm with you, does the print server need to 'think' it's online before the outputs can be controlled? Ah i’m with you, does the print server need to ‘think’ it’s online before the outputs can be controlled?

]]> By: Rhys http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-127 Rhys Mon, 07 Jun 2010 10:28:09 +0000 http://blog.rhysgoodwin.com/?p=94#comment-127 Right, so the outputs you need to use are data0 - data7 of the parallel port, can't remember the pins but it will be easy to find. Yes you just need the ip and port. The pins are addressed in 8 bits. data0=1, data1=2, data2=4, data3=8 etc so if you wanted to turn on data0 and data3 you would need to send a value of 9 (8+1). As for a web interface you should be able to do what you need with PHP. Right, so the outputs you need to use are data0 – data7 of the parallel port, can’t remember the pins but it will be easy to find. Yes you just need the ip and port. The pins are addressed in 8 bits. data0=1, data1=2, data2=4, data3=8 etc so if you wanted to turn on data0 and data3 you would need to send a value of 9 (8+1). As for a web interface you should be able to do what you need with PHP.

]]> By: Brian http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-126 Brian Mon, 07 Jun 2010 08:22:43 +0000 http://blog.rhysgoodwin.com/?p=94#comment-126 Hi Rhys Do you have a diagram or list of the 8 outputs connections? in order to control the outputs do you merly need to call the ip address, port and output value? ie could it be done via a browser for example? Hi Rhys

Do you have a diagram or list of the 8 outputs connections? in order to control the outputs do you merly need to call the ip address, port and output value? ie could it be done via a browser for example?

]]> By: Rhys http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-125 Rhys Mon, 07 Jun 2010 06:32:23 +0000 http://blog.rhysgoodwin.com/?p=94#comment-125 Hi Brian, You can control 8 outputs without additional circuitry. I guess you might be able to use some thing like a shift register chip to get more outputs but I don't have any experience with that. The other way to get more outputs is to use a print server which with 3 parallel ports each port is accessible on different tcp port e.g. 9100,9101,9102 etc. As for Linux, I've never done it but I'm sure it's very easy. You may be able to do something with /dev/tcp I suspect. Cheers, Rhys Hi Brian,

You can control 8 outputs without additional circuitry. I guess you might be able to use some thing like a shift register chip to get more outputs but I don’t have any experience with that. The other way to get more outputs is to use a print server which with 3 parallel ports each port is accessible on different tcp port e.g. 9100,9101,9102 etc.

As for Linux, I’ve never done it but I’m sure it’s very easy. You may be able to do something with /dev/tcp I suspect.

Cheers,
Rhys

]]> By: Brian http://blog.rhysgoodwin.com/hardware/print-server-power-control-hack/#comment-124 Brian Sun, 06 Jun 2010 20:22:26 +0000 http://blog.rhysgoodwin.com/?p=94#comment-124 Hi I've been working on a similar project and will be doing another one with the 170x, can you tell me how many outputs can be controlled and also is it possible to do it via linux using command line? ie can the url 192.168.1.10:9100,21 be called and the pinouts changed? thanks Hi

I’ve been working on a similar project and will be doing another one with the 170x, can you tell me how many outputs can be controlled and also is it possible to do it via linux using command line? ie can the url 192.168.1.10:9100,21 be called and the pinouts changed?

thanks

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