SmartWT: An open IoT sensor, datalogger and GPRS data transmission device for monitoring water levels in rice fields, with application to AWD irrigation. - Pietro Mascherpa; Michele Rienzner; Darya Tkachenko; Roberto Garza; Fabio Brandalese; Ezio Naldi; Claudio Gandolfi; Arianna Facchi (Comput. Electron. Agric., 2026)