Environmental
The FED4 monitors temperature, humidity, pressure, gas (air quality), and ambient light via two integrated sensors. By default values are polled and logged every 10 minutes.
| Measurement | Unit | Typical use |
|---|---|---|
| Temperature | °C | Chamber / ambient temperature |
| Humidity | % RH | Relative humidity |
| Pressure | hPa | Barometric pressure |
| Gas | kΩ | Gas resistance (VOC / air quality) |
- Chip: BME680 (Bosch Sensortec)
- Arduino library: Adafruit BME680 Library
- Adafruit breakout & guide: Adafruit BME680 — Humidity, Temperature, Barometric Pressure, VOC Gas
Example Temp/Humidity data logged in a mouse cage over 10 days:
| Measurement | Unit | Description |
|---|---|---|
| Lux | lx | Illuminance (human-eye weighted). |
| White | — | Raw white light value. |
- Chip: VEML7700 — High-accuracy ambient light sensor (Vishay optical sensors).
- Arduino library: Adafruit VEML7700
- Adafruit breakout & guide: Adafruit VEML7700
Example light readings in a mouse cage over 10 days in a facility with a 12/12 light/dark cycle:
