Please read the Issues section of the Contributing Rules at the "Contributing" link to the right before submitting an issue report. Source: https://github.com/xreef/ABB_Aurora_Solar_Inverter_Library Tag: https://github.com/xreef/ABB_Aurora_Solar_Inverter_Library/releases/tag/v1.0.1 It's a complete library to interfacing via rs485 the ABB Aurora inverter series Documentation ENG: https://www.mischianti.org/2020/08/20/abb-aurora-pv-inverter-library-for-arduino-esp8266-and-esp32/ ITA: https://www.mischianti.org/it/2020/08/20/libreria-inverter-abb-aurora-pv-per-arduino-esp8266-and-esp32/ Bye Renzo