AtomSoft
Well-Known Member
Ok i dont own one of these but was looking in my jameco catalog and then looked up the datasheet.
"The CD4021BC is an 8-stage parallel input/serial output shift register."
know that you know that do you think its possible to accomplish this?
Connect 8 switches (buttons(tactile)) to each parallel input and then connect another button to the first 2 then another to the next 2 so it end up like when you press button 1 it will send a clock and a 1.
Button 1 = 00000001
Button 2 = 00000010
button 3 = 00000100
...
button 255 = 11111111
I know you would need quite a few transistors to accomplish this but would it work?
The advantage is no ADC needed! and uses about 2-3 wires to PIC .
I got the idea looking at my remote controls PCB when it fell on the floor. You might not need any transistor but i would have to think more on how to wire it lol
"The CD4021BC is an 8-stage parallel input/serial output shift register."
know that you know that do you think its possible to accomplish this?
Connect 8 switches (buttons(tactile)) to each parallel input and then connect another button to the first 2 then another to the next 2 so it end up like when you press button 1 it will send a clock and a 1.
Button 1 = 00000001
Button 2 = 00000010
button 3 = 00000100
...
button 255 = 11111111
I know you would need quite a few transistors to accomplish this but would it work?
The advantage is no ADC needed! and uses about 2-3 wires to PIC .
I got the idea looking at my remote controls PCB when it fell on the floor. You might not need any transistor but i would have to think more on how to wire it lol
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