How An Electrochemical CO Sensor Works - Gravity: CO Sensor (Calibrated) - I2C & UART - SEN0466

In this video, we'll talk about how an electrochemical carbon monoxide sensor works. And we've got Gravity: CO sensor that has been calibrated at the factory, which can quickly and accurately measure the concentration of oxygen in the environment. It supports three output modes: analog, I2C, and UART, and has good compatibility with mainstream main control devices such as Arduino, ESP32, and Raspberry Pi.
Gravity: CO Sensor (Calibrated) - I2C & UART ► www.dfrobot.com/product-2508....
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Gravity: CO Sensor is a sensor that detects oxygen concentration and supports three output modes: analog, I2C, and UART. The probe has been calibrated at the factory, which can quickly and accurately measure the concentration of oxygen in the environment. Can be widely applied to fields like portable devices, air quality monitoring devices, industries, mines, warehouses, and other spaces where the air is not easy to circulate.
The probe adopts the electrochemical principle, has the characteristics of strong anti-interference ability, high stability, high sensitivity, etc., and the service life is as long as two years. The sensor has 32 modifiable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function, It has good compatibility with mainstream main control devices such as Arduino, ESP32, and Raspberry Pi. The easy-to-use Gravity interface, coupled with our sample code, can quickly build an oxygen concentration detector.
DFRobot has introduced 12 gas detection sensors in this series, CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF, which are used in exactly the same way and data format, so you can combine them according to your needs.
Timestamps:
Features 00:00
Specification 00:10
Electrochemical Principles 00:50
Demo 02:19
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[@guguge]

nice work!

[@mrlowkick8279]

I using the i2c communication on esp32, its works for a while (3 days). When its come for one week constant using, the sensors can't work properly and keep popping the "NO DEVICE" feedback. Any solutions for this, should i change the communication type to UART for constant and long term using ?

[@mrlowkick8279]

Any solutions for error reading from this sensor ? Its keep popping "no device" even though the Power Supply is already match the sensor working voltage (3,3 - 5 V)

[@zhoufrances9414]

👍👍

[@satriodwinugroho2564]

Please tutorial IIC ozone sensor DFrobot.

[@rocketscn]

What do you want to know about the IIC Ozone sensor?

[@satriodwinugroho2564]

@@rocketscn sensing ozone, i I've bought it but can't use it yet, I'm using an arduino mega 2560 microcontroller :(...

[@AdityaMehendale]

Nice demo, thanks!
What other gases would give false-positives in absence of CO? (VOCs? Aldehydes?)
What other gases would give false-negatives, even in presence of CO? (ozone?)
What gases/vapors would damage the sensor in the long run? (Silanes, outgassing from silicone-kit?)
What situations might affect the sensitivity adversely? (No free H2O to feed the redox-reaction, in extremely dry environments?)
What situations to watch out for, in general? (Rapid temperature-fluctuations?)
What is the power-consumption (standby, ready-to-go) and energy consumption (energy per measurement) of such a sensor? (Can it be battery-operated?)
Did I miss something?
A good engineer would/should want to know all sides of the equation :)

[@rocketscn]

wow, nice question

[@DFROBOTCN]

Thanks for your interest in this video, we shall do our best to answer your questions.
The false-positives gases are shown in the graphs in the video, and there are no more data available on the absence or presence of CO. These sensors may be damaged when being used or put for a long time in anaerobic environments. Besides, organic solutions and gases and corrosive gases may harm them.
The power consumption varies with different gas sensors, and the relevant information can be found on the product webpage or WIKI. For your other questions, sorry, currently we don’t have further information to provide. Thanks again for your question, we will try to provide as much information as we have.

[@AdityaMehendale]

@@DFROBOTCN Thanks!