Add BME280 (Bosch Sensortech)

[B48D81EFCC]

Includes BME280 sensor ic

[RX14]

Bot!

[RX14]

Your assembly outline should be the same size as your package rectangle except with a pin 1 marker, for typical packages. And the courtyard tool should be run last. You also seem to be missing the rectangle on your symbol

[B48D81EFCC]

• Fixed assembly outlines
• Fixed symbol

[B48D81EFCC]

Bot!

[RX14]

Bot!

[RX14]

Have you seen the documentation here? It's worth checking that and opening a few existing packages to see how they work and look.

The courtyard is good, and the assembly outline is much better, but the assembly and silkscreen is still missing a pin 1 marker. While drawing the assembly rectangle you will see the decoration tools for creating that marker in the bottom. Check the two existing DFN packages for how the pin 1 markers on those packages work.

[B48D81EFCC]

Bot!

[github-actions]

This review is brought to you by the Horizon EDA Poolbot commit 33131f8.

Items in this PR

State	Type	Name	Checks	Version	Filename
New	Entity	BME280	✔️ Pass	0 ✔️	entities/ic/sensor/environmental/bme280.json
New	Package	LGA-8	✔️ Pass	0 ✔️	packages/manufacturer/bosch-sensortec/lga-8/package.json
New	Part	BME280	✔️ Pass	0 ✔️	parts/ic/sensor/environmental/bme280.json
New	Symbol	BME280	✔️ Pass	0 ✔️	symbols/ic/sensor/environmental/bme280.json
New	Unit	BME280	✔️ Pass	1 ❌ (>0)	units/ic/sensor/environmental/bme280.json

Parts overview (excluding derived)

Bold items are from this PR

• Part BME280
  • Entity BME280
    • Unit BME280
      • Symbol BME280
  • Package LGA-8
    • Padstack SMD rectangular

Details

Parts

BME280

✔️ Checks passed

Attribute	Value
MPN	BME280
Value
Manufacturer	Bosch Sensortec (1 other parts)
Datasheet	https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme280-ds002.pdf
Description	Low power environmental (temperature, humidity, pressure) sensor
Tags	ic sensor

Pad	Gate	Pin
1	Main	GND01
2	Main	CSB
3	Main	SDI
4	Main	SCK
5	Main	SDO
6	Main	VDDIO
7	Main	GND07
8	Main	VDD

Entities

BME280

✔️ Checks passed

Attribute	Value
Manufacturer	Bosch Sensortec (1 other parts)
Prefix	U
Tags	ic sensor

Gate	Suffix	Swap group	Unit
Main		0	BME280

Units

BME280

✔️ Checks passed

Attribute	Value
Manufacturer	Bosch Sensortec (1 other parts)

Pin	Direction	Alternate names
CSB	Input	VDDIO (In)
GND01	Power Output
GND07	Power Output
SCK	Input	SCL (In)
SDI	Bidirectional	SDA (In)
SDO	Bidirectional
VDD	Power Input
VDDIO	Power Input

Symbol: BME280

✔️ Checks passed

• Is box symbol

Packages

LGA-8

Attribute	Value
Manufacturer	Bosch Sensortec (1 other parts)
Tags	ic sensor

✔️ Package checks passed

✔️ Clearance checks passed

Parameters

Parameter	Value
Courtyard expansion	000.250 mm

2.650mm 2.600mm
get-parameter [ courtyard_expansion ]
2 * +xy
set-polygon [ courtyard rectangle 0.000mm 0.000mm ]

Pads

Pad	Padstack	Pad width	Pad height
1	SMD rectangular	000.550 mm	000.350 mm
2	SMD rectangular	000.550 mm	000.350 mm
3	SMD rectangular	000.550 mm	000.350 mm
4	SMD rectangular	000.550 mm	000.350 mm
5	SMD rectangular	000.550 mm	000.350 mm
6	SMD rectangular	000.550 mm	000.350 mm
7	SMD rectangular	000.550 mm	000.350 mm
8	SMD rectangular	000.550 mm	000.350 mm

3D views (no models)

Without model

Top	Bottom

Pitch analysis

X	Y	Count
000.000 mm	000.650 mm	6
002.100 mm	000.000 mm	2

[B48D81EFCC]

@RX14 Thanks for the guidance and patience.
Should be much better now.

[tkornack]

Please consider:

• Replace the pin 1 dot with a chamfer
• Study how silkscreen pin 1 mark is done for similar headless packages
• In the symbol: the two ground pins should probably be a single ground pin
• The power pins are preferred on top and bottom of the symbol, with horizontal text.