Gravity: Analog Alcohol Sensor (MQ3) Category_Robot Kits/BEAM Four mounting holes make for

Four mounting holes make for a secure connection

5V in and 4A out where the current is just under the limit and the regulator might not shut off before damage occurs

An app-level library helps you write control code for these low level peripherals in the same way you'd write any other Java app

The IoT Power Relay is designed to allow you to *safely* control an outlet device that operates at 3--48VDC or 12--120VAC

Gravity: Analog Alcohol Sensor (MQ3) Category_Robot Kits/BEAM Four mounting holes make forThis is an Arduino Alcohol sensor. It uses a MQ3 probe which can be used in a Breathalyser. It has a high sensitivity to alcohol and less sensitivity to Petrol. The sensitivity is able to be adjusted by the potentiometer. The output is proportional to the density of gas. You can use analog reading to read the data from this sensor. To ease the difficulty of using this sensor, a Gravity Interface is adapted to allow plug&play. The Arduino IO expansion