Im working in a GSM / MP3 System. My arduino will call a number and when a person answer the call, a mp3 song message will play.
Im using 2 shields, a GSM Shield Sim900 and a MP3 Shield from Sparkfun. The 2 Shields separately works normaly, the Gsm make a call and the other play a song. when i put the two together any of then works. I think is a pin mistake but im not so good with classes and i cant find where i change the pins or witch pin the shield use. I note that mp3 keep reseting the coding too i dont know why…
Can anyone help me with this? I attach my codes and some photos, i use the arduino UNO, the “MP3_library” has to be put in arduino library and “GSM_MP3_code” anywhere.
Codes.zip (457 KB)