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.
Pinout
- Digital IO ports (0~38)Type · Signal
- Analog Input ports (0~7)Type · Signal
- UARTSType · Signal
- I2CType · Signal
- SPIType · Signal
- Servo Power PortType · Power
- External Power PortType · Power
- 3.3V5V SwitchType · Power, Control
- Reset ButtonType · Control
- GNDType · Ground
- VCC (switched)Type · Power
| Pin | Type |
|---|---|
| Digital IO ports (0~38) | Signal |
| Analog Input ports (0~7) | Signal |
| UARTS | Signal |
| I2C | Signal |
| SPI | Signal |
| Servo Power Port | Power |
| External Power Port | Power |
| 3.3V5V Switch | Power, Control |
| Reset Button | Control |
| GND | Ground |
| VCC (switched) | Power |
Pin details
11 connections- Digital IO ports (0~38)Signal
- Analog Input ports (0~7)Signal
- UARTSSignal
- I2CSignal
- SPISignal
- Servo Power PortPower
- External Power PortPower
- 3.3V5V SwitchPower, Control
- Reset ButtonControl
- GNDGround
- VCC (switched)Power
Start wiring
Shield
Confirm the data interface matches your host board.
Module pins: Servo Power Port, External Power Port, VCC (switched), GND, Digital I/O ports (0~38), Analog Input ports (0~7), UARTS, I2C. Schematik maps them to your board in the app.
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