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26AWG Brown Stranded Hookup Wire - 100ft spool
TE-267-BRN

This is a spool of 26 AWG stranded (7x34) hookup wire. Great for hooking up controls, sensors, instrumentation, etc. It is high quality tinned copper stranded wire with PVC jacket/insulation.

$5.66
6 Ready to Ship!
Steel Roller Chain Sprocket for #25 Pitch Chain - 12 Teeth
TD-099-012

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

$13.22
Special Order
2-4 days
SuperDroid Robots Gas Sensors
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Electrical/Controls  >  Sensors  >  Gas Sensors
SuperDroid Robots

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. For More Information: Sensor Support.


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

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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
7 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
9 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
8 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
6 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
40 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
9 Ready to Ship!
Gas sensors makes it possible to measure concentrations of gasses such as alcohol, methane, propane, butane, and carbon monoxide.
News and Updates
New Items
Motor Mount Tube - IG32 or IG42 SB
TD-056-342

This is a 2" x 2" x 3" long Aluminum tube with a 1/8" thick wall designed to support one of our IG32 or IG42 motors.

$26.00
32 Ready to Ship!
Magnetic Tape - Adhesive Backed 1 x 0.045 inch x 150 ft Roll
TS-073-000

1" width x 0.045" thickness x 150' length (2.54cm x 0.1143cm x 45.72m) magnetic tape for MGS1600. South is top side. Sold in 150' (45.72m) rolls. Each roll is 13 lbs (6 kg).

$141.00
5 Ready to Ship!
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