Sensor Clock

Sensor Clock in LEGO case

The sensor clock is intended to be a general purpose clock/alarm clock, as well as a host to a number of environmental sensors, including CO2, Temperature, and Humidity sensors.


The parts communicate over I2C. The top and bottom boards are connected via QWIIC connectors.


The Seven Segment display rotates between:

  • Time
  • CO2 measurement
  • Temperature measurement
  • Humidity measurement
  • Uptime measurement

The ePaper display will be used to show a graph of the last 3- or 48-hours of CO2 levels.


Wiring of the Sensor Clock

This is using two Half Proto Boards for the current prototype.

Future Plans

  • Add notification LEDs
  • Add Wireless for sensor readings
  • Implement buzzers