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Arduino Uno (MOD1) 1: Water level sensors or float switch: 3: 5V SPDT relay (RL1) 1: BC547 NPN transistor (T1) 1: 1N4007 rectifier ... Power supply for water pump motor: 230V AC: Arduino Code for ...

DHT22 Temperature and Humidity Sensor Module. The DHT22 module has a total of 3 pins. And the DHT22 bare bone sensor has 4 pins. If we consider the module among three pins two of which are power pins, ...

For the sensor detecting liquid, Arduino gives a signal to the buzzer and even XKC-Y25-NPN has an inbuilt LED for detecting the same. Full Video Description: Further, on the XKC-Y25-NPN sensor a notch ...

LEDs on the Arduino can be programmed to indicate if the sensor is/isn’t immersed by the liquid (and thus determine if liquid level is too high/low). The two companies say that the hardware provides ...

BMP280 Pressure Sensor with Arduino UNO – Connection Diagram. Now that we completely understand how the BMP280 Sensor works we can connect all the required wires to the Arduino UNO board, and in this ...