| EnviroDIY_DS3231 | An Arduino library for the DS3231 RTC (Real Time Clock). |
| KellerModbus | Arduino library for communication with Keller pressure and water level sensors via Modbus. |
| SDI-12 | An Arduino library for SDI-12 communication with a wide variety of environmental sensors. |
| SensorModbusMaster | Arduino library for communicating via modbus with the Arduino acting as master |
| YosemitechModbus | Arduino library for communication with Yosemitech sensors via Modbus. |