HP Jet Direct EX3 Plus from eBay. It has 3 ports, 8 bits each, total IP controllable outputs 8*3 = 24. Total cost $10
Opto22 PCB11 board from eBay.
Drivers? NetCat nc doesnt need any drivers, it is a utility to write to IP port. Wirting to ports is nothing like writing to lpt ports. You basically open TCP connection, send data, then close. Here is an example how to set all outputs to "1"
Code: Select all
printf "\xFF" | nc 192.168.1.100 9100
This sends FF to 192.168.1.100 on TCP port 9100 which cases all 8 outputs of the Jet DIrect to go high...
Popular Opto22 boards from eBay can be interfaced directly to the Jet Direct Plus card
Here is the complete solution using HP Jet Direct EX3 Plus. Only one port is used to interface with the Opto22 board:
Rhys also took the idea and developed a more friendly looking interface box with outlets sticking out and all. His apps is focused on the black Optos which are 110V AC controls contrasted to my 12V red Optos... Same thing, different applications
http://rhysgoodwin.wordpress.com/2008/0 ... trol-hack/