This Carbon Monoxide (CO) gas sensor detects the concentrations of CO in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of 10 to 10,000 ppm.The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5 V. Please read the MQ7 datasheet (185k pdf) for more information about the sensor.
Connecting five volts across the heating (H) pins keeps the sensor hot enough to function correctly. Connecting five volts at either the A or B pins causes the sensor to emit an analog voltage on the other pins. A resistive load between the output pins and ground sets the sensitivity of the detector. The resistive load should be calibrated for your particular application using the equations in the datasheet, but a good starting value for the resistor is 10 kO.
We offer a Pololu breakout board that makes it easier to interface with these sensors.
This semiconductor gas sensor detects the presence of methane (CNG) gas at concentrations from 300 ppm to 10,000 ppm, a range suitable for detecting gas leaks.
This carrier board is designed to work with any of the MQ-series "gas sensors".
Use these roll pins to fix sprockets to a shaft and keep them locked in place.
This is a Custom MLT-JR tracked robot platform, equipped with a pan and tilt camera for inspection purposes. It comes complete with a custom controller with built-in tablet.