Gravity: IO Expansion Shield for Bluno M3 (DFR0371)
Discontinued IO expansion shield for the Bluno M3, breaking out 39 color-coded GPIO pins including 8 PWM, 8 analog, 5 UARTs, 1 I2C, and 1 SPI. Voltage switchable between 3.3 V and 5 V; not compatible with other boards.
Start wiring
Shield
Confirm the data interface matches your host board.
Add-ons
271 other optionsAbout 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.
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