Problems with Multichannel gas sensor

Products & Technology Grove
#1

Dear all,
I’m having a small problem with the Mutichannel Gas sensor connected in arduino mega and a UTFT ILI9341 LCD shell. This is the third time that I am using this type of sensor. It always worked very well without any problems. Now, however, every 10 times that I activate the system, 5 times I get readings of the type shown in the attached figure. I have tried recalibration and checked all possibilities of conflict with other sensors. Nothing was effective. Would anyone have any suggestions?

IMG_1100
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#2

Maybe you hardware design to consider resetting the sensor, and when the data isn’t right, reset it and start over. @Ultraseven

#3

Could you explain better your point?
Thanks in advance…

Ultraseven

#4

That means , when you get wrong data you can reset the sensor, by utilizing the sensor reset pin or you can implement a logic your own to reset.

#5

Ok make sense, but What pin is the reset pin in the Multichannel gas sensor. Do you have some reference about reset this sensor?

Thanks

#6

This pin is generally set up by a MOS tube in the system. @Ultraseven

#7

There are only 6 pins available in grove Mutichannel gas sensor, MISO, SCK, NRST, GND, MOSI and VCC. The connection to I2C is by SCL and SDA. These are the pins that are available to the user.
There is a Reset pin on the chip but is not easy to access…
Is there some protocol to do this proceeding…

Thanks,

Cesar