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Steel Roller Chain Sprocket for #25 Pitch Chain - 60 Teeth
TD-099-060

With it's wide hub and finished bore, this 60 teeth steel roller chain sprocket is ready to mount to a shaft.

$36.62
Special Order
2-4 days
MD22 Devantech Dual Motor Driver
TE-020-000

The MD22 by Devantech is a robust low/medium power motor driver. The driver is designed to supply power for two independent motors.

$116.00
5 Ready to Ship!
SuperDroid Robots Gas Sensors
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Electrical & Controls  >  Sensors  >  Gas Sensors

Gas Sensors

Want to build your own breathalyzer? This variety of semiconductor gas sensors makes it possible to measure concentrations of gasses such as alcohol, methane, propane, butane, and carbon monoxide.


The answers to the most common questions we get can be found on our support pages. Visit our Sensor Support page for more information about the types of sensors we carry and the differences between them.


Looking for some sample code? Please visit us on GitHub.


Can't quite what you're looking for on our support pages? Have specific questions about your project? Stop by and visit our forums.

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Pololu Carbon Monoxide & Flammable Gas Sensor MQ-9
This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 1,000 ppm and combustible gas from 100 to 10,000 ppm.
TS-056-MQ9
$5.95
8 Ready to Ship!
Pololu Carbon Monoxide Gas Sensor MQ-7
This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.
TS-056-MQ7
$4.95
8 Ready to Ship!
Pololu LPG / Isobutane / Propane Gas Sensor MQ-6
This semiconductor gas sensor detects the presence of LPG, isobutane, and propane at concentrations from 300 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.
TS-056-MQ6
$4.95
10 Ready to Ship!
Pololu Methane Gas Sensor MQ-4
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.
TS-056-MQ4
$4.95
9 Ready to Ship!
Pololu Alcohol Gas Sensor MQ-3
This semiconductor gas sensor detects the presence of alcohol gas at concentrations from 0.04 mg/L to 4 mg/L, a range suitable for making a breathalyzer.
TS-056-MQ3
$4.49
10 Ready to Ship!
Pololu Flammable Gas & Smoke Sensor MQ-2
This semiconductor gas sensor detects the presence of combustible gas and smoke at concentrations from 300 to 10,000 ppm. The sensor's simple analog voltage interface requires only one analog input pin from your microcontroller.
TS-056-MQ2
$3.95
8 Ready to Ship!
Pololu MQ Gas Sensor Carrier
This carrier board is designed to work with any of the MQ-series "gas sensors".
TS-056-MQ0
$0.95
46 Ready to Ship!
Humidity Sensor Carrier HIH-4030
This is a carrier board for the HIH-4030 relative humidity (%RH) sensor from Honeywell outputs an analog voltage that varies nearly linearly with humidity.
TS-051-000
$16.95
6 Ready to Ship!
Gas sensors makes it possible to measure concentrations of gasses such as alcohol, methane, propane, butane, and carbon monoxide.
Custom Robot Request

We specialize in designing and fabricating custom robots and other electro-mechanical devices.

You can also get a quote for custom mechanical, software, and electronics engineering services. We can also do your custom CNC work, general fabrication, and welding.

1-919-557-9162

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4 inch Wide Molded Track Set
TD-137-002

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$349.00
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NEW Prebuilt 4WD WiFi Mobile Robot with PTZ Dome Camera - IG42
TP-500-058

This WiFi controlled mobile robot features a large IG42 motors, 10 inch tires, roll cage, and IP PTZ camera system. It comes assembled and ready to run; no programming necessary. This Wifi robot is perfect for outdoor surveillance on any type of terrain.

$3,899.00
1 Ready to Ship!
Robot Drive Wheel - Pair of  Traction Lug 10x2.5 Tiller Tires
TD-140-210

New, Carlisle lug tread tire on steel rim. Steel rim has centered hub with 1 inch bore and 5/16" crosshole on each side for left or right hand use.

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16 Ready to Ship!
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