The MQ7 is a simple-to-use Carbon Monoxide (CO) sensor suitable for sensing CO concentrations in the air. It can detect CO-gas concentrations anywhere from 20 to 2000ppm. MQ7 is a high sensitivity to carbon monoxide and stable and long-life span.
1. Size:37mmx25cmx32mm/1.45''x0.98''x1.26''
2. Lots of robot projects need joystick. This module provides a affordable solution to that. Simply connect to two analog inputs, the robot is at your commands with X,Y control. It also has a switch that is connected to a digital pin. This joystick module can be easily connect to Arduino by normal IO Expansion Shield with supplied cables.
Product parameters:
* H bridge motor dual drive, and can drive two DC motor or 1 line 4 phase stepper motor;
* The voltage of the power supply module 2V-10V;
* The signal input voltage 1.8-7V;
* Single channel current of 1.5A, peak current up to 2.5A, low standby current (less than 0.1uA);
Feature
*Contactless transmission of data and supply energy (no battery needed)
*Operating distance: Up to 100mm (depending on antenna geometry)
*Operating frequency: 13.56MHz
*Data transfer: 106 kbit/s
*Data integrity: 16 Bit CRC,parity,bit coding bit counting
*Anticollision
*Typical tickting transaction: <100 ms ( including backup management)
