Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
07/23/07 19:06
Modified:
  07/23/07 19:42
Read: times


 		 #142202 - please note I said \"works\" not works.
Responding to: ???'s previous message
There's NO WAY you can build an RS-232-compliant interface with resistors alone and no negative supply. If you know a trick that "works" then you should spell it out, particularly if you know it doesn't work. Nobody, and I mean NOBODY, believes that you can interface at RS232 levels without a negative supply. It just happens that the MAX232 generates its own, rather noisy, negative and positive supplies for the interface.

1) I posted nothing about "RS-232-compliant", what I have seen has definitely not been
2) please note I said "works" not works.
3) I do not recall a phrase to search on, but the posts (paraphrasing) "you do not need a RS-232 transciever" and "why does my working and tested RS-232 not work with my new PC" have not exactly been rare.
4) I e-mailed you an example, there is no way in hades I'll post it in the forum for some unsuspecting sod to copy.

Erik


List of 39 messages in thread
TopicAuthorDate
Loading a hex file.            01/01/70 00:00      
   more info? a few ideas....            01/01/70 00:00      
      loading hex files.            01/01/70 00:00      
   tried a bunch of stuff to no avail...            01/01/70 00:00      
      little 'A's            01/01/70 00:00      
   giving up the ghost :)            01/01/70 00:00      
      SiLabs, et al            01/01/70 00:00      
         I'll second that            01/01/70 00:00      
            I'll second the second and a bit of info            01/01/70 00:00      
               not entirely helpful ...            01/01/70 00:00      
                  How can it be not entirely helpful            01/01/70 00:00      
                     IIRC, DigiKey doesn't give the gender either.            01/01/70 00:00      
                        it's male            01/01/70 00:00      
                           thanks!            01/01/70 00:00      
         Nonsense! Let him do what he wants!            01/01/70 00:00      
            Lost the Thread!            01/01/70 00:00      
            Is it what he actually wants?            01/01/70 00:00      
               He didn't indicate a requirement, but ...            01/01/70 00:00      
                  Did he actually choose it?            01/01/70 00:00      
                     Well ... just because YOU don't like it ...            01/01/70 00:00      
                  HOGWASH            01/01/70 00:00      
                     what does ISP have to do with amount of I/O            01/01/70 00:00      
                     Have you thought about what you said?            01/01/70 00:00      
                        it STILL has absolutely nothing to do with ISP.            01/01/70 00:00      
                           those are red herrings, Erik            01/01/70 00:00      
                              forget red herrings            01/01/70 00:00      
                                 the mention of ISP is the \"red herring\"            01/01/70 00:00      
   Can you do this?            01/01/70 00:00      
   thanks guys...            01/01/70 00:00      
      looks like            01/01/70 00:00      
         Maybe you should spell out what you mean...            01/01/70 00:00      
            two resitors, 3 resistors ....            01/01/70 00:00      
               now you really should spell out what you mean            01/01/70 00:00      
                  please note I said \"works\" not works.            01/01/70 00:00      
                     don't start another "food fight"            01/01/70 00:00      
                        did you see the e-mail I sent you?            01/01/70 00:00      
                           No ... I haven't received it            01/01/70 00:00      
                              It very often comes up in the 47th response            01/01/70 00:00      
                                 What do you mean by that?            01/01/70 00:00      

Back to Subject List