Build a device from standard parts

An Arduino Nano ESP32 with the modules you pick, assembled in an enclosure and delivered with USB-C power. AI agents use the MCP server, or open a priced device directly, e.g. /build?parts=bme280,oled&country=DE.

Modules

Climate

BME280 temperature, humidity and pressure sensor

Air quality

SCD41 CO2 sensor (also temperature and humidity)Shows when to air a room; not a safety detector.

Display

1.3" OLED display, 128×64, monochrome

Presence

PIR motion sensor

Switching

Relay for low-voltage loads up to 24 V DCSwitches low-voltage loads only (up to 24 V DC, 2 A). Never mains. Check that the load draws at most 2 A; its own supply connects to the relay's screw terminals.

Light

RGB LED ring, 16 LEDs (WS2813)

Motion

PCA9685 16-channel servo driverMicro servo SG90, 9 g

Enclosure Printed enclosure with vents and openings for sensors and display No enclosure: parts on the carrier with rubber feet

Deliver to Units