MQ-3 Alcohol, Gas Sensor MQ3

The HW-201 IR infrared obstacle detection module can detect obstacles within a distance range of 2 cm to 30 cm, with a detection angle of 35 degrees.

It can operate with a supply voltage of 3.3 V to 5 V and has a maximum current consumption of 100 mA. The module outputs a digital signal, high when an obstacle is detected, low when no obstacle is detected.

The infrared LED has a wavelength of 940 nm and an operating frequency of 38 kHz. The module operates at temperatures between -25 °C and +55 °C.

Transceiver module based on an NRF24L01 allowing a 2.4 GHz wireless connection. This module communicates with an Arduino or compatible microcontroller via the SPI bus.

MODULE compatible Arduino to control 4 motors DC or 2 stepper motors and have 2 connections for servomotors. This shield uses pins D3 to D12 for operation (direction, speed, etc).

The module is based on two L293D drivers and can control up to 4 DC motors with an intensity of 0.6 A per output (1.2 A at peak).

The MQ2 analog gas sensor is used in gas leak detection equipment. This sensor is suitable for detecting LPG, butane, propane, methane, alcohol, hydrogen, and smoke. It has high sensitivity and a fast response time; the sensitivity can be adjusted using a potentiometer.

This is 125K RFID Tag. The RFID technology is used for sensing and identifying tagged people and objects for access control, automation, and a whole range of different applications.

Operating on a frequency of 125kHz, these tokens are all pre-programmed with unique ID numbers to communicate wirelessly with RFID Readers over distances of around 10cm or less. This means you can attach it to vehicles or items, keyrings or even pets’ collars to keep track of the location via an array of readers in the office, warehouse or home.