sd card read error

Comments

• Repetier

  July 2018

  Does it help to reset after powering directly? Then it could be a timing problem when power comes up too slow at the beginning. You could also test starting without sd card and then insert and see if it works.
  
  Apart from this there is no difference in code for the start methods.
• rubanaero

  July 2018

  thanks for the reply
  but its not doing the job
  .and also when i connect with dc supply laptop trackpad works weirdly 
  
  
• Repetier

  July 2018

  Should not have any influence on other devices on the computer. But it is important that the board does not draw then 500mA with lcd etc. Normally no problem. USB and Arduino DC converter are only for that much specified.
  
  Is there anything else drawing much current like a servo (which should have it's own power and not use the 5V from board). No idea what else could cause such problems.
• rubanaero

  July 2018

  other than lcd and ramps 1.4 nothing else is connected with adruino
   
  but i have noticed that when i insert the sd card the lcd turns dim  both when connected via usb or  dc power.. 
  
  should i replace the ramps 1.4 or adruino or the  lcd , like which one should i replace 1st and check..
  please help me with this 
• Repetier

  July 2018

  You mean it stays dim or dims just when you insert it? It dims if you get less current. You might try a different sd card first. Can not test here but do not remember that it dims for me.
• rubanaero

  July 2018

  yeah it stays dim when sd card is there inside 
  
  i tried different sd cards too but same result
• rubanaero

  July 2018

  solved .... removed the earthing wire from psu and now it works. i measured with a multimeter there a voltage difference about 0-3V flactuating from -ve to earth wire from psu.