SensorStation3

Indoor climate station on the yellow display: temperature, humidity, pressure and CO2 with 24-hour graphs.

Cheap Yellow DisplaySolderingAbout 30 minNeeds Wi-FiLicense Apache-2.0Source on GitHub

What you need

Board: Cheap Yellow Display
Parts: I2C sensor BME280, SHT31 or SCD40
Also: Wi-Fi network

SensorStation3 is an environmental station with a touch dashboard on the Cheap Yellow Display. It shows temperature, humidity, pressure, dew point and CO2 with 24-hour graphs and trends, finds supported I2C sensors by itself and sends the readings to Home Assistant, Domoticz or ThingsBoard over MQTT. Original project by ScorpionZZZ on GitHub, Apache-2.0. Chipnik hosts the release binaries unchanged so you can flash them from the browser.

Connect a BME280, SHT3x, SCD4x or another supported I2C sensor to the CN1 connector of the board. The firmware detects both screen versions of the CYD at boot.

Firmware files come from the v1.8.3 release.

Parts

Buy everything for this project

Cheap Yellow Display ESP32-2432S028BuyAliExpress

1 ×I2C sensor BME280, SHT31 or SCD40SCD40 adds real CO2

After flashing

The board restarts by itself when flashing is done.
The project needs Wi-Fi. How to connect it is in the project text or in the source repository.
If nothing happens, press the RST (EN) button once.

Flashing failed or the board behaves oddly

Versions

1.8.3 added to Chipnik 2026-11-05

Release v1.8.3 of ScorpionZZZ/SensorStation3, files unchanged. Release notes on GitHub

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