HardLabs

Envirobridge

mneha05·envirobridge-kicad

Envirobridge PCB layout, top view — open source board by mneha05

About the Envirobridge PCB

Envirobridge is an open source PCB design by mneha05, published on GitHub. It is a 2-layer board measuring 34 × 26 mm, with 11 components from 7 distinct parts.

Other key parts include the BME280. By type, the board carries 3 capacitors, 2 ICs and 2 resistors.

It belongs with the sensors designs in this gallery.

From the project

Dual-BME280 sensor daughterboard designed and routed in KiCad

A compact 34 × 26 mm, 2-layer 3.3 V sensor board that places two Bosch BME280 environmental sensors on one shared I²C bus while preserving independent addressing, configurable pull-ups, direct test access, and two host-connector options.

EnviroBridge is built around a simple hardware problem: one MCU, two identical environmental sensors, one I²C bus.

The board solves the integration details around that core problem instead of treating the sensors as isolated breakout modules. Address selection, pull-up ownership, decoupling, connector choice, debug access, mounting, airflow exposure, and…

Envirobridge, from the project README
From the project README

Main components on the Envirobridge

BME280

Envirobridge bill of materials (BOM)

11 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
BME280
U1, U2
1
ADDR U1
SJ1
1
ADDR U2
SJ2
2
PU_EN
SJ3, SJ4
2
100NF
100n
C1, C2
1
4.7UF
4.7u
C3
2
4.7K
4.7k
R1, R2

Envirobridge design files

The KiCad project lives in the mneha05/envirobridge-kicad repository on GitHub; these links point at the commit this page was built from.

Envirobridge: common questions

How big is the Envirobridge PCB?

The Envirobridge measures 34 × 26 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Envirobridge?

11 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Envirobridge design files?

From the mneha05/envirobridge-kicad repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Envirobridge design in my own project?

The repository has no license, so all rights stay with mneha05. Use it as a reference, and ask the author before reusing the design.

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