| CurrentTransformer | Arduino Library for measuring current in 50/60Hz circuits using current transformers. |
| DS3232RTC | Arduino Library for Maxim Integrated DS3232 and DS3231 Real-Time Clocks. |
| JC_Button | Arduino library to debounce button switches, detect presses, releases, and long presses. |
| JC_EEPROM | Arduino library to support external I2C EEPROMs. |
| JC_Sunrise | Arduino library to calculate sunrise and sunset times. |
| MCP79412RTC | Arduino library for the Microchip MCP79411/12 Real-Time Clock/Calendar. |
| MCP9800 | Arduino Library for Microchip MCP9800/1/2/3 2-Wire High-Accuracy Temperature Sensors. |
| MCP9808 | Arduino Library for Microchip MCP9808 Maximum Accuracy Digital Temperature Sensor. |
| movingAvg | A simple Arduino library for calculating moving averages. |
| Timezone | Arduino library to facilitate time zone conversions and automatic daylight saving (summer) time adjustments. |
| tinySPI | tinySPI is an Arduino SPI master library for ATtiny24/44/84, 25/45/85, 261/461/861, 2313/4313 MCUs. |