component

BME690 v2.0

Public Made by Adom

by adom

8x8 mm KiCad molecule for the Bosch BME690 4-in-1 gas/temp/humidity/pressure sensor. I2C with 2.2k pull-ups, 0402 passives.

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BME690 Molecule v2.0

KiCad 9 molecule breakout for the Bosch BME690 — a 4-in-1 environmental sensor with gas (VOC), temperature, humidity, and barometric pressure sensing plus an on-chip AI gas scanner.

Overview

Parameter Value
IC BME690 (Bosch Sensortec, LGA-8, 3x3 mm)
Interface I2C (default addr 0x76, SDO to GND)
Board size 8 x 8 mm
Passives 0402
LCSC PN C42431867

BOM

Ref Value Package LCSC
U1 BME690 LGA-8 3x3 mm C42431867
R1, R2 2.2k (I2C pull-ups) 0402 C25879
R3 10k (CSB pull-up) 0402 C25744
C1, C2 100 nF (bypass) 0402 C1525

Contacts

4 machine-pin contacts + 4 machine-contact pads for Adom baseboard integration.

Design Notes

  • I2C pull-ups are 2.2k — works for both 100 kHz and 400 kHz modes
  • CSB tied high via 10k to select I2C mode (vs SPI)
  • SDO tied to GND for I2C address 0x76
  • Decoupling caps placed close to VDD and VDDIO pins
  • Gas sensor inlet on top of IC — keep clear of conformal coating and enclosure obstructions

Source