Forum >dfplayer mp3
dfplayer mp3
adolfhack 2017-03-05 14:31:14 1152 Views3 Replies Dear All,
I got this problem,
i programmed an arduino uno for a simple mp3 playback
it worked fine on computer.
but once i connect 9v battery to the arduino instead of computer USB .
i can only hear noise .
what could be the problem
??
I got this problem,
i programmed an arduino uno for a simple mp3 playback
it worked fine on computer.
but once i connect 9v battery to the arduino instead of computer USB .
i can only hear noise .
what could be the problem
??
2017-03-06 23:13:02 it turned to be caused by the arduino it self,
seems it doesnt regulate the voltage efficiently .
so i powered the module by 6 volts and 5 volts externally and it worked ,
adolfhack
seems it doesnt regulate the voltage efficiently .
so i powered the module by 6 volts and 5 volts externally and it worked ,
adolfhack 2017-03-06 22:43:19 It sounds a little strange. In theory, it should be no problem. So would you mind give me some pictures about your diagram? Did you try to use the IO mode? What happened? Wendy.Hu
Wendy.Hu 