indecided said:Nigel Goodwin said:indecided said:eight way switch and diodes to create binary data? Now i'm confused..
Think pull-up resistors on the four lines, with each switch connection taking different lines to ground via diodes - so for all ones you have no diodes, and the resistors pull all the lines HIGH. For all zeros you have diodes from each line, pulling them all LOW - for values inbetween you simply wire diodes accordingly.
how does eight individual pushbutton switches and a maze of diodes sound like?
In sounds like the switches don't latch 8)
Oh dear. I can't make much sense outta this.. I can roughly quantify the idea but have no inkling of a circut. Please do elaborate.. I'm pretty keen on using pushbutton switches instead of a rotary dial.
OTOH, am I supposed to be looking for a decimal/hexadecimal rotary?
parts num 333-091/333-085 on RS (Rotary Switches)
K, after spending a couple of days looking at info on rotary switches, I still can't deduce how to build individual pushbutton switches to create binary data out of resistors and diodes. gah... someone please help. :shock: