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

 __          __
 \ \        / /
  \ \  /\  / / 
   \ \/  \/ /  
    \  /\  /   
     \/  \/    
               
               

 __  __
 \ \/ /
  \  / 
  /  \ 
 /_/\_\
       

 _______ 
/ ___   )
\/   )  |
    /   )
   /   / 
  /   /  
 /   (_/\
(_______/
         

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

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:
'''trigger preparations for v3.1''' While v2.2 was running the engine (fuel only), we took a PC scope and a v3.1 (with Alubos and lotsof wires) to check the signals from the distributor. The signals were as we thought: * GND * 12V * 5V trigger for every event (4 camtooth: coil-type if you like) * 5V trigger 1 per engine cycle (1 camtooth) [http://www.vems.hu/files/Fero/Mazda_cam_trigger.JPG a scope snapshot] notes: * 1/10 probe was used, so grid is 1V (not 0.1V) * the scope captured the very last tooth for the yellow signal (the 1 camtooth HALLsignal) when the probe was disconnected. The 4 tooth signal continued for a while. During normal operation the frequency of the green was exactly 4* times that of yellow. On the picture, green duty is about (12msec / 32 msec) When RPM was about 1500, * the green duty was 7.5 msec and period 20 msec * the yellow period was 80 msec We attached the v3.1 LM1815 input (through a 10uF 35V 1210 cap, that was on its place on the bottom side of board) to the 4-tooth signal, and read the correct RPM value (after enabling the primary_trigger).
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.