G'day all,
ive been trying to work out how i could control more than 8 external appliances using my parallel port...
i figured that an 8 bit signal could be read by a certain circuit and then control up to 256 relays but i have no idea how?!
im (obvously) a rooky in the ways of electronics beyond the simple circuit concepts but im looking forward to breaking this initial barrier and would like to control multiple circuits, have multiple inputs and also...
i would like to control objects such as lights with a dimmer and once again i have no idea how to.
i would like to have input that is not just 0 or 1 but a certain range per channel. e.g. i want to read a temperature from a room
i have enough programming knowledge to work my way around VB and C# confidently so that side wont be an issue.
btw, this setup doesent have to use the parallel port but maybe serial? or usb? whatever works
any help would be greatly appreciated!
thanks people
ive been trying to work out how i could control more than 8 external appliances using my parallel port...
i figured that an 8 bit signal could be read by a certain circuit and then control up to 256 relays but i have no idea how?!
im (obvously) a rooky in the ways of electronics beyond the simple circuit concepts but im looking forward to breaking this initial barrier and would like to control multiple circuits, have multiple inputs and also...
i would like to control objects such as lights with a dimmer and once again i have no idea how to.
i would like to have input that is not just 0 or 1 but a certain range per channel. e.g. i want to read a temperature from a room
i have enough programming knowledge to work my way around VB and C# confidently so that side wont be an issue.
btw, this setup doesent have to use the parallel port but maybe serial? or usb? whatever works
any help would be greatly appreciated!
thanks people
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