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Microcontroller
SparkFun Thing Plus RP2040
SparkFun's RP2040 Thing Plus combines the Feather-compatible footprint, Qwiic, battery support, microSD, and plenty of flash.
Processor
RP2040 dual-core Arm Cortex-M0+
Logic
3.3 V GPIO
Power
USB-C, LiPo connector, 3.3 V rail
Format
Feather-compatible Thing Plus
Check before wiring
- GPIO is 3.3 V only and is not 5 V tolerant.
- Not all RP2040 GPIOs are exposed in the Thing Plus footprint.
- Check microSD/shared pin usage before assigning SPI.
Interfaces
GPIOI2CSPIUARTADCPWMUSBJTAG
Source-backed connector
Interactive pin map
Pin map
Connector
Feather-compatible side headers
Signals grouped by function — schematic layout, not to physical scale
Dense header — open Full view for a roomier, fully-labelled diagram.
Simplified diagram, grouped by function — not to physical scale. Pin data is source-backed; verify against the linked documentation.
Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.
- All RP2040 GPIO uses 3.3 V logic and is not 5 V tolerant.
- GPIO7 and GPIO23 are physically tied together for the shared I2C clock routing.
- GPIO9-12, GPIO14, and GPIO15 are assigned to microSD; GPIO8 drives the NeoPixel and GPIO25 drives the status LED.
All 23 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| Exposed digital header signals | ||||
| 1 | UART | UART | ||
| 2 | UART | UART | ||
| 3 | SPI | SPI | ||
| 4 | SPI | SPI | ||
| 5 | SPI | SPI | ||
| 7 | I2C | I2C | ||
| 8 | I2C | I2C | GP23 tied | |
| 17 | GPIO | |||
| 18 | GPIO | |||
| 19 | GPIO | |||
| 20 | GPIO | |||
| 21 | GPIO | |||
| 22 | GPIO | |||
| 23 | GPIO | |||
| Analog header signals | ||||
| 1 | ADC | |||
| 2 | ADC | |||
| 3 | ADC | |||
| 4 | ADC | |||
| Power and control | ||||
| 1 | Power | USB | ||
| 2 | System | |||
| 3 | Power | 3V3 | ||
| 4 | Ground | GND | ||
| 5 | Power | VBAT | ||
Why it matters
- SparkFun hookup guide and product page document board wiring resources.
- Qwiic plus battery support makes it good for sensor prototypes.
- Feather-compatible footprint broadens add-on options.
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