Hello there. I have a problem with my sd module and my arduino uno. when I connect everything with wire 10cm works well. But when I connect everything with wire 30cm it stops working! there is there a maximum length for the isp? connects I like this tutorial http://www.instructables.com/id/Playing-Wave-file-using-arduino/
Then I place Condensator somewhere to solve the problem? thank you
You'll have to increase cable area size to reduce resistance.
Add decoupling capacitors on Vcc of SD module.
thank you for your reply. I already spend in wire bigger. I try with capacitor (0.1, 0.22, 1, 10, 100UF) between 5v sd module and gnd, but it works once out of 10! (I tested the SD module with the example sketch "cardinfo" of Arduino).
tonytony72:
I already spend in wire bigger.
How big are we talkin' about.
Sorry for my google translate 
.i said "I used a larger section of wire.