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AVIATION / Flight electronics / REVIEWED 2026-09-11

D04Barometric pressure sensor

Measure ambient pressure as an optional altitude input.

Manufacturers & products

A barometer measures air pressure; software estimates altitude from pressure changes. It is an auxiliary sensor, and atmospheric accuracy figures do not guarantee outdoor altitude-hold performance.

American sourcing options appear first. A U.S. company or distributor label does not establish U.S. manufacturing. The origin notes identify the specific evidence and any limits.

integrator

SparkFun Electronics

Micro BMP581 Qwiic breakout

Compact I2C pressure-sensor breakout for prototype instrumentation using a Bosch sensor. [5][3]

U.S. company

SparkFun lists a Niwot, Colorado company address. No product-specific US manufacture is established for this BMP581 board; the Teensy manufacturing statement does not transfer to it. [5][3]

Program / application

Upstream breakout alternative; flight-firmware integration required [5][3]

Company location: Niwot, Colorado, USA

Online catalog / ordering

Official product page provides a catalog or inquiry route; verify current stock, revision, firmware and connectors before ordering.

Product scope & qualifications

Product prose gives inconsistent inch-to-mm board dimensions; use the linked board drawing for mechanical design.

View catalog & ordering

manufacturer

Bosch Sensortec

BMP390

Low-power absolute pressure sensor; identified on the original Brave F7 board. [6][2][1]

International supplier

Bosch Sensortec's cited company address is Reutlingen, Germany. Factory and lot origin remain unverified. [6][2][1]

Program / application

Upstream pressure IC; integrated on some 5-inch flight controllers [6][2][1]

Company location: Reutlingen, Germany

Manufacturer inquiry

Official product page provides a catalog or inquiry route; verify current stock, revision, firmware and connectors before ordering.

View product & inquiry route

manufacturer

STMicroelectronics

LPS22DF

Active digital barometer family with serial interfaces for a custom controller or sensor board. [8][4]

International supplier

ST identifies headquarters in Geneva, Switzerland. This does not establish a particular sensor's wafer or package origin. [8][4]

Program / application

Upstream pressure IC; custom integration alternative [8][4]

Company location: Geneva, Switzerland

Manufacturer inquiry

Official product page links technical resources, direct ordering and distributors; confirm exact part and firmware support.

Product scope & qualifications

Bare sensor, not a complete flight accessory; a supported driver and PCB integration are required.

View product & inquiry route

What remains unverified

No complete installed sensor-error characterization is provided for the illustrative aircraft.
Bare-IC and breakout manufacturing origins require separate evidence.

Where it comes from

A company address is shown separately from a published factory location. Request the manufacturing site and lot traceability for the exact part when sourcing.

What to compare

Firmware driver and interface
Confirm the supported sensor ID, bus, address and board target.
Pressure range · hPa or kPa
Use the sensor's rated operating span.
Absolute versus relative accuracy
Calibration offset and small pressure-change accuracy describe different behavior.
Noise and oversampling
Compare resolution and noise at the same conversion settings.
Update rate and latency · Hz
Filtering can reduce noise while delaying the reported response.
Temperature compensation
Accuracy limits often apply only within specified temperature and pressure windows.
Airflow and enclosure
Prop wash, light, heat and pressure venting affect installed measurements.
Supply and integration mass
A breakout includes regulators/connectors absent from the bare sensor.

Selection & integration notes

Many freestyle controllers already include the barometer; an extra breakout may be redundant.
Compare accuracy conditions before choosing the smaller headline value.
TDK ICP-20100 is explicitly marked EOL and is excluded from the current shortlist.

Supporting references [7]

Published product examples

2 REFERENCES

Specifications belong to the named product and configuration.

BMP390Bosch Sensortec

Full-accuracy pressure range: 300–1250 hPa[6]Manufacturer operating range.
Typical absolute accuracy: ±0.50 hPa[6]300–1100 hPa and 0–65°C.
Typical relative accuracy: ±0.03 hPa[6]700–1100 hPa and 25–40°C.

Do not convert the relative figure into a guaranteed flight altitude error.

Example sources [6][2]

Micro BMP581 QwiicSparkFun Electronics

Pressure sensing range: 30–125 kPa[5]Breakout's manufacturer specification.
Normal-mode output rate: 0.125–240 Hz[5]Normal mode; continuous-mode maximum is a different condition.

Board outline should be checked against CAD because page prose contains a metric conversion inconsistency.

Example sources [5][3]

Sources & references

REVIEWED 2026-09-11

Manufacturer pages and technical documents support the linked claims. A review date is not a publication date or stock check.

Brave F7 flight controller RR2144-01 Rotor Riot · Publication date not stated
Original Brave F7 electrical/mechanical specifications and US manufacture; firmware notice is revision-specific.
Accessed 2026-09-10
BMI270 datasheet Bosch Sensortec · Publication date not stated
BMI270 technical reference, German company address and §9.2 product-use restrictions; not factory origin.
Accessed 2026-09-11
Contact us SparkFun Electronics · Publication date not stated
Company address in Niwot, Colorado; no blanket product-manufacture assertion.
Accessed 2026-09-10
Corporate media resource gallery STMicroelectronics · Publication date not stated
Company identifies headquarters in Geneva, Switzerland; this is not a chip manufacturing location.
Accessed 2026-09-10
Micro pressure sensor BMP581 Qwiic SparkFun Electronics · Publication date not stated
Breakout and pressure range; dimensional conversion inconsistency retained as a caveat.
Accessed 2026-09-10
BMP390 pressure sensor Bosch Sensortec · Publication date not stated
Pressure range and accuracy with specified operating conditions.
Accessed 2026-09-10
ICP-20100 TDK InvenSense · Publication date not stated
ICP-20100 explicitly marked EOL on current manufacturer page; retained as status evidence, not a current recommendation.
Accessed 2026-09-11
LPS22DF barometric pressure sensor STMicroelectronics · Publication date not stated
Active sensor offering and upstream integration interfaces.
Accessed 2026-09-11