Hardware Overview

🔌 Pinout

Pin Label	Function	Notes
VCC	Power Supply	3.3V or 5V
GND	Ground	Common ground for all components

Ref.	Description
IC1	ICP-10111 Barometric Pressure Sensor
L1	Power On LED
U1	ME6206A18XG 1.8V Regulator
JP1	2.54 mm Castellated Holes
J1	QWIIC Connector (JST 1 mm pitch) for I2C

Pin	Voltage Level	Function
VCC	3.3 V – 5.5 V	Provides power to the on-board regulator and sensor core.
GND	0 V	Common reference for power and signals.
SDA	1.8 V to VCC	Serial data line for I²C communications.
SCL	1.8 V to VCC	Serial clock line for I²C communications.

Note: The module also includes a Qwiic/STEMMA QT connector carrying the same four signals (VCC, GND, SDA, SCL) for effortless daisy-chaining.

The ICP-10111 is a high-precision barometric pressure sensor module based on capacitive MEMS technology.

Measures absolute pressure over 30 kPa–110 kPa and integrates a temperature sensor for real-time thermal compensation.
Delivers ±1 Pa differential accuracy (≈5 cm altitude resolution) and ±1 hPa absolute accuracy across –40 °C…+85 °C.
Built-in 24-bit ΔΣ ADC and I²C interface allow direct digital readout without external amplification.
Three programmable power/noise modes (Ultra-Low Noise, Low Noise, Low Power) optimize trade-off between current draw and resolution.
Breakout board includes onboard 1.8 V regulator, level-shifting I/O and four mounting holes for easy integration.