WIFI Gas Sensor

WIFI Gas Sensor (CO, Hydrogen, Nitrogen) detects the present of the gas and sends signal to a server on a selectable IP address and TCP port

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ESP8266 WIFI Gas Sensor detects gas presence and send signal to a server on a selectable IP address and TCP port

ESP8266 based WIFI Gas Sensor. It detects movements and sends a signal via WIFI to a server on port number 9999 via TCP protocol. The board can be configured via a web browser to connect to your wireless router. The board can be connected to a serial interface for debugging or reprogramming of the ESP8266, and comes with TX-RX connectors, reset and flash switches, making it flexible for experimenting and prototyping.

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Hacker404 wrote 06/25/2015 at 21:59 point

I don't think he prioritised measuring nitrogen. These sensors are cheap on ebay and it just happens that the sensor for the gas he desired to detect is also sensitive to high concentrations of nitrogen. 

There are lots of these sensors ranging from the common cheaper ones to things like ozone sensors that are more expensive.

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zakqwy wrote 06/25/2015 at 14:07 point

I'd like to see more (lots more) info on the actual sensing technology. Electrochemical cells? Some optical absorbance technology? TBD? As @Bruce Land suggests, why would you prioritize measuring nitrogen?

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Jeremy Lambert wrote 06/26/2015 at 03:06 point

usually a catalyst crust (tin oxide for combustibles I think) over a wire a some heaters.  the resistance of the coated wire changes with the presence  of the heated gasses.

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Bruce Land wrote 06/25/2015 at 11:36 point

Nitrogen? Really? Must detect it all the time.

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