medapayne wrote: > Hello > > I badly need your help > I own the amplifactor PAM8302 from Adafruit: > > I have a Pi zero with a Phat Dac sound card: > > As I use a passive speaker I wanted to connect the PAM8302 except that I > do not know how to connect it to my Pi zero with Phat Dac. > > Could you tell me or connect it on GPIO or other? > > Thank you in advance.
Hi medapayne I notice a few problems from your post: The phat dac is a Stereo DAC outputting a line level. If you connect the speaker directly as shown, you should not hear it unless you are at 10 cm in a quiet room. Also you use a mono ( 2 connections ) 3.5 mm plug into the stereo ( 3 connections ) socket of the phat dac. So you short 1 channel output and pick up the other channel. I tried to connect an external smal D-amp to the phat dac a few times. All failed because of ground loop and power interference issues . So your adafruit amp can be used, but I fear your audio quality will be poor unless you use 2 separate power supplies. A faster ready made solution could be the phat beat from the same maker. It has builtin speaker amps that will allow you to just connect the passive speaker. Even 2 pcs if you want stereo. I used it to drive big speakers at modest output levels, but with great pleasure Similar the speaker phat, has 1 mono amp of 2 watts and an small speaker included. Good Luck M-H Pi based multi-room audio system powered by PiCorePlayer(s): Pi3B with Phat-dac in a Rasptouch, 2 pi B+ with Cirrus Logic Audio Card, Pi Zero with Phat-beat , and a few other tests... ------------------------------------------------------------------------ M-H's Profile: http://forums.slimdevices.com/member.php?userid=66156 View this thread: http://forums.slimdevices.com/showthread.php?t=109048 _______________________________________________ diy mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/diy
