In this paper, we present the design, fabrication and calibration of a passive UHF RFID tag based soil moisture and environment temperature sensor. The inter-digital double-sided capacitive sensor ...

We developed a printed high sensitive temperature sensor by synthesizing poly (3, 4-ethlenedioxythiophene) poly (styrenesulfonate) (PEDOT:PSS) and carbon nanotubes (CNTs) composition ink on a flexible ...

A lightweight Raspberry Pi sensor logger in Python for HC-SR04 (ultrasound) and DHT11 (temperature/humidity), exporting data to CSV or Google Sheets. Perfect for IoT experiments, smart home logging, ...