1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Electronics Electronic Codelock

Discussion in 'Modding' started by Devil_H@ck, 14 Jul 2002.

  1. Devil_H@ck

    Devil_H@ck What's a Dremel?

    Joined:
    13 Jul 2002
    Posts:
    295
    Likes Received:
    1
    Has anyone got a simple codelock witch I could use instead of my power-on button (probably using an optocoupler right?).

    I made this one (http://www.circuitos.terra.cl/schem/r86.gif) using a TIL111 optocoupler but for some reason it isn't working. Probably I've just missoldered something, so I'll check it again (for the 5th time :rolleyes:).

    So has anyone got any other circuit wich resembles this so that I could eventually make a new one?
     
  2. tj965

    tj965 What's a Dremel?

    Joined:
    29 May 2002
    Posts:
    15
    Likes Received:
    0
  3. Devil_H@ck

    Devil_H@ck What's a Dremel?

    Joined:
    13 Jul 2002
    Posts:
    295
    Likes Received:
    1
    That one looks really hard to make :eeek:.
    I'm trying to design one myself using the 4022 IC they also use in the circuit I made but since I almost don't know anything about electronics that will be a though job :).
     
  4. Devil_H@ck

    Devil_H@ck What's a Dremel?

    Joined:
    13 Jul 2002
    Posts:
    295
    Likes Received:
    1
    Allright, so I made a new schematic in CircuitMaker 2000.
    Could anyone check it for errors (there will be probably lots of them :))?

    [​IMG]
    Download sheme

    *mod: I just thought of it, you ppl can't know which letter is which pin. So here they are:

    CP1: 13
    CP0: 14
    MR: 15
    Q4-7: 12
    Q7:10
    Q6: 5
    Q5: 4
    Q4: 11
    Q3: 7
    Q2: 3
    Q1: 1
    Q0: 2

    Datasheet of the 4022 IC: http://www.fairchildsemi.com/ds/CD/CD4022BC.pdf
     
    Last edited: 14 Jul 2002
  5. Devil_H@ck

    Devil_H@ck What's a Dremel?

    Joined:
    13 Jul 2002
    Posts:
    295
    Likes Received:
    1
    It seems I forgot to tell what the circuit should exactly do :rolleyes:.
    So here we go:
    When you start pressing the code you have about 0.5 second to press the next button or the circuit is reset (a logical 1 on pin 15).
    When you press a wrong button the circuit gets reset too.

    When the right code is pressed the chip should turn on the led/optocoupler that's linked to pin 10 and afterwards it should go back to it's original state (=reset).
     
    Last edited: 14 Jul 2002
  6. Devil_H@ck

    Devil_H@ck What's a Dremel?

    Joined:
    13 Jul 2002
    Posts:
    295
    Likes Received:
    1
    Pls, Macroman or someone else who's very good at this stuff, help me.
    I need this thing urgent :(!
     
  7. viridius

    viridius What's a Dremel?

    Joined:
    7 Apr 2002
    Posts:
    364
    Likes Received:
    0
    What happened to the MOSFET and the resistors? Also, the switches don't connect to the positive supply.
     
  8. Devil_H@ck

    Devil_H@ck What's a Dremel?

    Joined:
    13 Jul 2002
    Posts:
    295
    Likes Received:
    1
    That's exactly why I'm asking your guys help. As I said, I don't know anything about electronics except some real basic things.

    Please help me out here.
     
  9. viridius

    viridius What's a Dremel?

    Joined:
    7 Apr 2002
    Posts:
    364
    Likes Received:
    0
    Well, instead of making a new schematic, you could just use the one you posted. That circuit works.
     
  10. Devil_H@ck

    Devil_H@ck What's a Dremel?

    Joined:
    13 Jul 2002
    Posts:
    295
    Likes Received:
    1
    Hm, k.
    I'll desolder the circuit I have & resolder it again.
    Argh, I hate it so much :).
     

Share This Page