| ANBSensorsModbus | A library for communicating with pH sensors manufactured by ANB Sensors using Modbus. |
| EnviroDIY_DS3231 | An Arduino library for the DS3231 RTC (Real Time Clock). |
| EpochTime | An Arduino library for converting between time in parts as used by core gmtime functions and epoch time. |
| GeoluxCamera | Arduino library for communication with Geolux serial camera. |
| GroPointModbus | Arduino library for communication with GroPoint soil moisture sensors via Modbus. |
| KellerModbus | Arduino library for communication with Keller pressure and water level sensors via Modbus. |
| LoRa_AT | A small Arduino library for AT command based LoRa Modules. |
| RTC_I2C | A universal API for a large number of I2C RTCs. Note that not the complete functionality of each RTC is supported |
| 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. |