The pH sensor measures the acidity or alkalinity of a solution and outputs an analog signal that the ESP8266 reads and converts into a pH value. Connect the analog output pin of the pH sensor to the ...

pH level, nitrogen, phosphorus, and potassium. The Arduino and soil sensor communication is established using the RS485 communication protocol. Connect the Arduino Uno to the RS485 module according to ...

1: Author’s prototype Circuit diagram ... sensor module. In standby mode, IR LED emits continuous IR rays. Phototransistor remains non-conducting since it is not receiving any IR rays. Timer circuit ...

An infrared proximity sensor or IR Sensor is an electronic device that emits infrared light to detect objects and motion in Arduino projects. This active IR sensor module is perfect ... is the ...

Rajguru Electronics has released the ADIY pH sensor module, a sensor for measuring the potential of hydrogen (pH) in any liquid. The low-cost sensor can precisely measure the hydrogen-ion activity in ...