Part Information Review and Update

Thought for 3 mins 25 sec

I reviewed the current part project and cross-checked it against both the existing Adafruit document and the official Bosch BMP280 sensor datasheet.

Overall result

Datasheet URL is already set, so I did not overwrite it. Per the project, it points to the Adafruit breakout guide, not the Bosch sensor datasheet.
The current part project is modeling the Adafruit breakout board, not the bare Bosch sensor IC.
The symbol/pin labels are mostly consistent with the Adafruit board pinout.
The main gaps are metadata completeness and missing pin descriptions/properties, plus a footprint abstraction mismatch versus the actual breakout/mechanical data.

The recommended workflow for part-project verification is to treat the datasheet as the source of truth for metadata and exact pin info, and to flag count/package mismatches explicitly rather than guessing

Current project information Project properties

Table

Field	Current value	Assessment
Manufacturer Part Number	`Adafruit_BMP280`	Likely usable as an internal/library name, but not a formal Adafruit SKU/MPN
Manufacturer Name	`Adafruit`	Reasonable
Datasheet URL	Adafruit breakout PDF	Present, but this is a guide/breakout document, not the official Bosch IC datasheet
Part Type	`Sensors`	Broad but acceptable
Designator Prefix	`IC`	Not ideal for a breakout board; more often a module/board would use a different convention

Schematic symbol contents

The project contains 9 terminal-style components:

All of them are currently typed as Terminal with Pin Type = Passive.

Footprint contents

The layout contains pads for:

Datasheet / document cross-check Adafruit breakout guide says

The existing project Datasheet URL points to the Adafruit guide. That document describes the board as an Adafruit BMP280 Barometric Pressure + Temperature Sensor Breakout with:

I2C and SPI support
VIN = 3 V to 5 V input
3Vo = regulated 3.3 V output, up to 100 mA
onboard regulator and level shifting
pin meanings:
- VIN = power input
- 3Vo = regulator output
- GND = ground
- SCK = SPI clock / I2C SCL
- SDI = SPI MOSI / I2C SDA
- SDO = SPI MISO
- CS = SPI chip select

Official Bosch BMP280 datasheet says

The official Bosch BMP280 datasheet identifies the sensor IC as:

Bosch Sensortec BMP280
8-pin metal-lid LGA
package size 2.0 mm × 2.5 mm × 0.95 mm
interfaces: I2C and SPI
supply ranges:
- VDD: 1.71 V to 3.6 V
- VDDIO: 1.2 V to 3.6 V
pressure range: 300 to 1100 hPa
operating temperature: -40 °C to +85 °C
key IC pins:
- 1 GND
- 2 CSB
- 3 SDI / SDA
- 4 SCK / SCL
- 5 SDO / I2C address select
- 6 VDDIO
- 7 GND
- 8 VDD

Key specs summary Breakout-board level

Table

Spec	Value
Product	Adafruit BMP280 breakout
Function	Pressure + temperature sensor breakout
Host interfaces	I2C, SPI
Board input voltage	3 V to 5 V
Logic level handling	3 V to 5 V safe via level shifting
Regulated output pin	3.3 V, up to 100 mA
User-facing pins	VIN, 3VO, GND, SCK, SDI, SDO, CS

Sensor-IC level

Table

Spec	Value
Sensor IC	Bosch BMP280
Package	8-pin LGA metal-lid
Package size	2.0 mm × 2.5 mm × 0.95 mm
IC supply	1.71 V to 3.6 V
Interface supply	1.2 V to 3.6 V
Pressure range	300 to 1100 hPa
Operating temperature	-40 °C to +85 °C

Mismatches / issues found 1) Datasheet property is present, but not the official sensor datasheet

The current property points to the Adafruit breakout guide, not the Bosch datasheet.
This is not strictly wrong for a breakout-board part, but it means:
- good for board pinout
- weaker for formal IC package/spec verification

Flag: metadata quality issue, not a hard error.

2) MPN is not a precise commercial part number

Adafruit_BMP280 looks like a project/library identifier, not a formal manufacturer part number.
For a production-quality part entry, I’d expect either:
- the exact Adafruit breakout SKU/MPN, or
- a clear statement that this part is a module/breakout, not the Bosch IC.

Flag: likely incomplete metadata.

3) Package / case code is missing

The project does not currently expose a package/case code such as:

breakout board form factor / header footprint description, or
Bosch IC package if the part is intended to reference the sensor chip.

The sync guidance specifically calls out package/case code as core metadata to verify and populate

Flag: missing metadata.

4) Symbol pin descriptions are missing

The current terminals have designators and pin numbers, but I do not see Pin Description properties such as:

VIN = Board power input
3VO = Regulated 3.3 V output
SCK = SPI SCK / I2C SCL
SDI = SPI MOSI / I2C SDA
SDO = SPI MISO / I2C address select on sensor side
CS = SPI chip select

The part-sync guidance explicitly recommends short per-pin descriptions and exact pin metadata rather than leaving pins minimally defined

Flag: missing pin descriptions.

5) Pin types are too generic

All pins are currently Passive, but the board-level functions are more specific:

VIN: Power In
3VO: Power Out
GND: Ground
SCK: likely Input or Passive at module boundary
SDI: Bi-Directional at I2C use, input in SPI use
SDO: Output
CS: Input

Because this is a breakout module rather than a bare IC, some ambiguity is expected, but Passive for every terminal loses ERC value.

Flag: functional pin typing is incomplete.

6) Bare-IC datasheet vs breakout symbol/footprint are not 1:1

This is the biggest conceptual issue:

The Bosch datasheet is for the 8-pin BMP280 IC
The project symbol/footprint represent the Adafruit breakout board with 7 user I/O pins + 2 mounting holes

So:

pin count does not match the Bosch IC package
footprint does not match the 2.0 mm × 2.5 mm LGA sensor package
that is expected if this project is intended to be the breakout board
but it should be documented clearly in metadata so users do not confuse the part with the raw sensor IC

Flag: abstraction mismatch, but likely intentional.

7) Mounting holes are represented as terminals

MH1 and MH2 appear as terminal components/pads. That can work for a part project, but they are not electrical signal pins from the sensor or board interface.

Flag: acceptable if intentional, but they should be clearly labeled as mechanical.

What looks correct Pin names vs Adafruit board docs

These match well:

That aligns with the Adafruit breakout pinout from the current document URL

Recommended cleanup High priority

Table

Item	Recommendation
MPN	Replace `Adafruit_BMP280` with exact Adafruit SKU/MPN if available
Datasheet strategy	Keep Adafruit guide as board reference, but also record the Bosch BMP280 datasheet somewhere in metadata/docs
Package / case code	Add a clear breakout/module package description
Pin descriptions	Add short descriptions for all user pins
Pin types	Change from all-`Passive` to functional types where clear

Medium priority

Table

Item	Recommendation
Designator Prefix	Consider whether `IC` is appropriate for a breakout module
Mounting holes	Mark/document MH1 and MH2 as mechanical

Bottom line

Board pin labels: good
Metadata completeness: needs work
Pin descriptions: missing
Pin typing: too generic
Footprint vs Bosch datasheet: not a direct match, but that’s expected if this is meant to be the Adafruit breakout board
Current datasheet URL: present, but it references a guide, not the official Bosch IC datasheet

If you want, I can now update the part metadata and pin properties directly:

add/fix package and description fields
add pin descriptions
set better pin types
optionally replace or supplement the datasheet URL strategy for this breakout part

Fix metadata and pins

Add Bosch datasheet

Clean mounting holes

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