____ 
  / ___|
 | |    
 | |___ 
  \____|
        

   ____  
  / __ \ 
 | |  | |
 | |  | |
 | |__| |
  \____/ 
         
         

 _______ 
(  ____ \
| (    \/
| |      
| |      
| |      
| (____/\
(_______/
         

         
         
  #####  
 ##  ##  
 ##  ##  
  #####  
     ##  
     ##  

 _   _ 
( ) ( )
| | | |
| | | |
| (_) |
(_____)
       
       

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
http://img215.imageshack.us/img215/8474/obd0wa.th.png [http://img215.imageshack.us/img215/8474/obd0wa.png Big image] Your load resistor is 100 Ohms. C12, in series with the 100 ohms wants to have an Xc of a lot less than 100 ohms (less than 10 ohms is good) at the baud that you will be using. Many similar circuits replace the capacitor with a short-circuit. The purpose of the capacitor is to reduce power consumption when there is no data flowing. If it were me, I would use a 10uF (because I have a lot of them in my parts bin!)although many different values would probably work well. Thanks! I'll try a 10uF then, using 100nF now.. There must be something else wrong with the whole circuit (this image is just a piece of it) RXD and TXD connects to a PCA82C250 and then to CAN bus, it communicates but seems to lose data... Try replacing c12 with a short circuit temporarily to see if that helps clear up the lost data problem. --- I'll try that tomorrow, also gonna disconnect cap's on CAN bus Uploaded the whole schematic
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.