The idea of aeroponics — growing plants in an air or mist environment rather than soil — has been around for over a century, yet somehow it always appears very high-tech and novel in practice.

To make things even higher-tech, boomish designed a custom aeroponic garden monitoring system, based on a Teensy 4.1.

The system uses a custom PCB, which incorporates an LM2596S buck converter and TI P82B715DR I2C extenders to give the humidity sensors further reach. The TI HDC1080 low-power digital relative humidity sensors used have a single hard-coded I2C address, so an Analog Devices LTC4316CDD#TRPBF I2C address translator is used to allow them to coexist on the same bus. After creating a successful aeroponic monitoring system, boomish went on to create a SQL-backed hardwood floor humidity monitoring and logging system, with the exciting additional feature of Power over Ethernet (PoE).