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Electronic lock for 8 digits

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1Electronic lock for 8 digits Empty Electronic lock for 8 digits Sat Apr 17, 2021 12:06 pm

Fizik_S

Fizik_S

Electronic lock for 8 digits. In the archives, there are 2 schemes that differ in the way of comparing the secret code and the code entered from the keyboard. There are more than 4 billion possible combinations.

Electronic lock for 8 digits 8-digi10

Electronic lock for 8 digits 8-digi11
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Electronic lock for 8 digits Attachment8-digit_lock0_HC688_(16key).zip
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Electronic lock for 8 digits Attachment8-digit_lock0_XOR_(16key).zip
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2Electronic lock for 8 digits Empty Re: Electronic lock for 8 digits Sat Apr 17, 2021 3:34 pm

Mistral



Very good project Fizik_S 
Sorry I pushed it from the front page with my opamp-examples, this post will push it back  Electronic lock for 8 digits 1f607 
I want to ask you, in which version is this made so I will know in which folder to place the download?
Thanks

3Electronic lock for 8 digits Empty Re: Electronic lock for 8 digits Sat Apr 17, 2021 3:49 pm

Fizik_S

Fizik_S

This project was created in SimulIDE 0.4.15. SR1

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4Electronic lock for 8 digits Empty Re: Electronic lock for 8 digits Mon Apr 19, 2021 1:02 pm

Mistral



I cracked your HC688 code  pirat

Electronic lock for 8 digits 8-digi10

Didn't notice that the led only stays on as long as you keep the enter button pressed so you had me going for an hour. Very nice project, didn't go into all the details of every chip yet but it is very well made if I may say so.

MM74C922-16 bit encoder
nice

You draw very thight to make it fit, not wasting one millimeter and even crossing over other pins  Wink
Did you copy some of your tunnels? If so than it's working good, since my Ben Eater bread board project I avoided it. Would like to try it again because it saves a lot of time.

5Electronic lock for 8 digits Empty Re: Electronic lock for 8 digits Tue Apr 20, 2021 11:50 am

Fizik_S

Fizik_S

Did you copy some of your tunnels?

I copy elements enough when designing schemas. This saves a lot of time. If there are errors in the program, then I do not use the function that causes the error. Errors are quickly corrected and the new version of the program does not contain them (as a rule). Therefore, I am calm about errors in the program. You need to make it a rule to periodically run the simulation of the circuit. I.e. debug the circuit in parts. This rule will allow you to develop the device much faster and more efficiently. It is easier to look for errors in individual blocks than in the whole scheme. You can make each block as a separate circuit, debug it, and then connect them into a single circuit.

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