Sequence AND code

189

02:50:51

This circuit Can be used as a Keypad code, making each pushbutton represent a correct number on the keypad. Supose the correct sequence is 5-3-7. The other numbers are dummies, so they don't need to be Connected to anything.

Update: Added reset NC Pushbutton with pulldown resistor (Thanks to kaivanveldhoven)

published 11 years ago

kaivanveldhoven

11 years ago

Really nice! Some tips: Add an AND gate to the vcc input. Connect one terminal to V+ of the voltage supply. Add the other and terminal to a normally closed pushbutton. Make sure to put a pulldown resistor after the switch. Now this switch is able to reset the whole thing! Keep up the work!

Raphango

11 years ago

Thanks! Just added the reset! :D

kaivanveldhoven

11 years ago

Hey dude, I really liked your design you made here. I decided to expand it and add some features of my own!

kaivanveldhoven

11 years ago

Here is the link: http://everycircuit.com/circuit/6652131958325248 let me know if you like it! :)

kaivanveldhoven

11 years ago

Ofcourse, all the credit goes to you!

reinhold

11 years ago

Well, there is no sequence relevance in your circuit. 537 573 375 357 735 753, all them will switch through. But I find your back looped and gate nice.

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