Measuring the speed of a rotating object is a common requirement. Knowing the speed of table and ceiling fans, as well as ...

The hardware was assembled by connecting the Arduino UNO R4 WiFi, the PZEM 004T, the current transformer, and the OLED ...

Drones are widely used across several fields, including aerial photography, surveying, inspection, agriculture, and ...

Abstract: We developed a compact sensor module for hydroponics that measures the nutrient concentration and water level using simple oscillator circuits. Oscillation frequencies are measured and are ...

It's why DIY smart home projects suddenly got cheap (and actually doable) ...