I have a 4.1 Teensy w/ a 4.0 audio shield piggy-backed. no other wires.
audio example plays fine, but when I play the 3 files on the SD card, there's a constant hum(buzz?) a few notes below A-440.
the hum has a bite to it, almost like a sawtooth. it's volume is slightly below the Audio wave volume.
ALSO...
I am using the Tutorial Example: "Part_1_04_Blink_While_Playing" and have changed the
#define SDCARD_MOSI_PIN 7, to PIN 11 for my 4.1.
but
the LED is almost solid on. in that i think it's blinking along with that background hum.
any thoughts?
thanks from
Russ in Ocala, Florida, USA
audio example plays fine, but when I play the 3 files on the SD card, there's a constant hum(buzz?) a few notes below A-440.
the hum has a bite to it, almost like a sawtooth. it's volume is slightly below the Audio wave volume.
ALSO...
I am using the Tutorial Example: "Part_1_04_Blink_While_Playing" and have changed the
#define SDCARD_MOSI_PIN 7, to PIN 11 for my 4.1.
but
the LED is almost solid on. in that i think it's blinking along with that background hum.
any thoughts?
thanks from
Russ in Ocala, Florida, USA
Last edited: