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Keyestudio MQ-3 Alcohol Ethanol Sensor Detection Module for Arduino
This analog gas sensor - MQ3 is suitable for detecting alcohol. It can be used in a breath analyzer.
It has good selectivity because it has higher sensitivity to alcohol and lower sensitivity to Benzine.
The sensitivity can be adjusted by rotating the potentiometer.
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IR Break Beam Sensor – 5mm leds
This IR break beam sensor works by detecting an object breaking a beam of IR light. This particular sensor has a range of up to 50 cm / 20″ and can be used with 3.3 or 5V.
raspberry pi 5 4gb With a 64-bit quad-core Arm Cortex-A76 processor at 2.4GHz,
