The MQ3 alcohol sensor operates at 5V DC and consumes around ... The MQ-3 Alcohol Detection Sensor Module circuit diagram is given below. This module's design is relatively basic and only requires a ...

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 ... Arduino ...

Here is a simple optoreflective sensor circuit based on TCRT5000 module. It is ideal for projects like robotics ... 1: Author’s prototype Circuit diagram of the optoreflective sensor is shown in Fig.

2 shows the circuit diagram of the alcohol detector. The circuit includes an Arduino Uno board (MOD1), four LEDs (L1 through L4), two buzzers (B1 through B2), an OLED SSD1306 module (MOD2), a NEO 6M ...