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  • 13/11/2019

    I tested few days the sensor. This sensor is difficult to use and interpret... mult calibrate, mire hours to be stable... now is still in tests, see https://thingspeak.com/channels/794196

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  • 08/09/2020

    Está bem, está bem

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  • 02/02/2018

    I've been logging data from this sensor board for a week, after a longer burn-in period (see attached image of air quality value recording). There's not much to say about the board itself, it's designed just ok and matches my expectations. However, it would be nice if a schematic was supplied. The pin information on the board is a bit sparse. I'm running it with a 3.3V I/O voltage, but I guess 5V would also work fine. A few notes I might add: - Pull RST to high for proper operation. I've observed that i2c might hang, once you start the firmware on the ccs811 sensor. - Don't be surprised that the HDC1080 reports a rising temperature when you turn the heater of the ccs811 on. That could be a feature, but also a design flaw of the board (sensors too close), depending on what temperature you want to get (local or environment). When going for a Temp/Hum. compensation of the VOC-Sensor, the local data may be of concern, but I haven't tested that. The ccs811 sensor again is somewhat tricky to use, because of its automatic baseline calibration, which might go wrong, for example if a sudden change in temperature or humidity occurs (when you open a window in winter). So in fact, the sensor might report totally wrong values. Make sure to always record the baseline register as well and take action on too sudden changes.

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  • 18/12/2017

    Отличная плата, интересные датчики, НО. После включения начинает плавно(примерно за час) расти температура с 23С до 29С. Нагреватель HDC1080 отключен - проверял. Может это CCS811 разогревает плату? В помещении около 23С Excellent board, interesting sensors, but. After switching on, the temperature starts to rise gradually (about an hour) from 23C to 29C. Heater HDC1080 is disabled - checked. Can this CCS811 warm up the board? The room is about 23C

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  • 11/06/2018

    Our student project was running out of time. Materials were not available with the local vendors. It is really surprising that Banggood’s backend team kept their promise and could come out successful is ensuring end-to-end commitment. Thanks to Banggood Opearation and Logistics team members and in general, thanks to all Banggood members.

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  • 09/11/2017

    The board arrived later than I thought, but it is functional, which is important. Good deal.

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