ItsyBitsy M0 Express
Use jumper wires to attach A2 and G to different legs of
the piezo.
ItsyBitsy M0 Express has PWM on the following pins: D0,
RX, D1, TX, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11,
D12, D13, L, A2, A3, A4, MOSI, MISO, SCK, SCL, SDA,
APA102_MOSI, APA102_SCK.
There is NO PWM on: A0, A1, A5.
ItsyBitsy M4 Express
Use jumper wires to attach A1 and G to different legs of
the piezo.
To use A1, comment out the current pin setup line, and
uncomment the line labeled for the M4 boards. See the
details above!
ItsyBitsy M0 Express has PWM on the following pins: A1,
D0, RX, D1, TX, D2, D4, D5, D7, D9, D10, D11, D12, D13,
SDA, SCL.
There is NO PWM on: A2, A3, A4, A5, D3, SCK, MOSI,
MISO.
Metro M0 Express
Use jumper wires to connect A2 and any one of the
GND to different legs on the piezo.
Metro M0 Express has PWM on the following pins: A2,
A3, A4, D0, RX, D1, TX, D2, D3, D4, D5, D6, D7, D8, D9,
D10, D11, D12, D13, SDA, SCL, NEOPIXEL, SCK, MOSI,
MISO.
There is NO PWM on: A0, A1, A5, FLASH_CS.
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