Zack

E-Mail: spazzman@iname.com

One regrets more the things that you
did not do than the things you did do.


-----Original Message-----
From: Josef Hanzal <snail@IOL.CZ>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: 18 December 1998 09:15
Subject: Signal conditioning


snip-------

>
>      +5V
>        o
>        |
>       1K0                     |
>        |                      |\
>   |o---+----100K----+---------| >O---------> PIC pin
>  -|                 |         |/ 1/6
>   |o  limit        --- 100n   |  HC14
>    |  switch       ---
>    |                |
>    |                |
>   ---              ---
>   GND              GND
>
>Do you think this will give me better chances or is there any better way of
>conditioning the signals ? TIA.
>
>Josef
>

Try this, I have used it for lengths of up to 15Meters  :

                      +5V
                        |
                      10k
       diode         |
   |o---|<I-----------+------------100K---------+-------------> PIC pin
  -|                                                   |
   |o  limit                                        --- 100n
    |  switch                                      ---
    |                                                  |
    |                                                  |
   ---                                                ---
   GND                                          GND