Multichannel Gas Sensor ist not working

Seeed-Studio / Wio_Link

Wio_Link 8266

http://seeed-studio.github.io/Wio_Link/

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Multichannel Gas Sensor ist not working #50

Closed dynamik1703 closed 7 years ago

dynamik1703 commented 7 years ago

Hello,

I'm trying to use the Multichannel Gas Sensor with the Wio.

But it's not possible for me. The test request returns: {"error": "The sensor is not connected."}

I have two Wios and already the second sensor. No combination was working.

Is there a bug?

Best wishes

KillingJacky commented 7 years ago

When did you purchase your multichannel gas sensor? In the mean time I will check with colleague if the sensor has been revised.

dynamik1703 commented 7 years ago

I bought it 2-3 weeks ago. It's the v1.0.

Every reguest gives the response: {"error": "The sensor is not connected."}

The only exception is the CO reguest. The response is: {"concentration_ppm":-1.0}

KillingJacky commented 7 years ago

The sensor's firmware has been updated to version 2 which breaks the protocol. You might bought the new version. I will fix the Wio driver. Sorry for the inconvenience.

dynamik1703 commented 7 years ago

Thanks great! Can you please tell me when it is ready and what do I have to do to update it?

Best wishes

KillingJacky commented 7 years ago

I will ping you here when it's done. What you need to do is simple, just update the firmware for your Wio via the App.

mlilius commented 7 years ago

I have this issue as well. Thank you for addressing this.

KillingJacky commented 7 years ago

Fixed with 75440ce35ecfbca9c79029efa1804287c7fa6662 Some notes about this sensor:

The version 2 firmware (the gas sensor) will not respond any i2c request in the first 1 second at startup, because the LED blink pattern needs 1 second. So please read the sensor after 1 second.
The gas sensor needs to be heated at least 1 minute to get the right reading. The reading can't be stable until the sensor's been totally warmed up.

mlilius commented 7 years ago

Thank you. I can confirm that this works now. Thanks again.

dynamik1703 commented 7 years ago

Works for me as well! Awesome.

Thank you very much. Great service!

KillingJacky commented 7 years ago

Pleasure. Thank you guys for reporting as well. Will close this, if any further questions please reopen.

GanLay20 commented 5 years ago

I couldn't use Multichannel gas sensor with ESP32..There is no result in serial print ...I am using Grove expansion board especially for ESP32..Thanks...