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Title: ideas, SO2 sensor
Post by: gurumelo on April 03, 2015, 12:32:02 PM

Hello.
Do you have ideas about connect a SO2 sensor to A20 an read values?
I live in a city with very much polution from factories. SO2 and arsenic.
Some suggestion about so2 sensor?

Thanks

Title: Re: ideas, SO2 sensor
Post by: MBR on April 06, 2015, 12:43:24 AM

I'v tried to google SO₂ sensors and most of them (e.g. this one on http://www.aliexpress.com/store/product/Semiconductor-type-gas-sensor-module-detects-sulfur-dioxide-SO2-qualitative-detection-sensor-module/727356_1256473095.html (http://www.aliexpress.com/store/product/Semiconductor-type-gas-sensor-module-detects-sulfur-dioxide-SO2-qualitative-detection-sensor-module/727356_1256473095.html)) seem to have some kind of an analog output, so the voltage is proportional with the gas concentration. So you will need an ADC to connect it to A20.

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OLinuXino Android / Linux boards and System On Modules => A20 => Topic started by: gurumelo on April 03, 2015, 12:32:02 PM