MONITOR service now OPEN!

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MONITOR service is now available to provide Visualization to your existing IoT product!

Please tried using it! Thank you!


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How to Measure ROOM CO2 concentration with 20$ sensor "MH-Z19" and Raspberry Pi, 2nd edition.

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MH-Z19 CO2 concentration Sensor MH-Z19  is a small, low-cost, weigh 15g CO2 sensor module product by  郑州炜盛电子科技 . You can buy it at an online shop like  eBay  or  aliexpress  about 20$. The electrical interface of this sensor is compatible with Raspberry Pi. So you can make your D.I.Y. CO2 Monitor with MH-Z19, Raspberry Pi. The normal CO2 concentration is about 400ppm. On a global scale, this value is sensitive to the effect of the activities of the plants, seasonally it gets lower in summer due to vigorous plants photosynthesis and getting higher in winter, and the long-range trend is continuing to rise linearly. The Japanese Meteorological Agency reports CO2 concentration chart continuously as hire . It indicates a clear trend of rising. On your room-scale, in a closed room with 2 people, CO2 concentration rise up to 1,200ppm soon and keep falling slowly after 1 person go out. In a high CO2 concentration room as 1200ppm, somebody ca...
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Monitoring all over the world with 3G Network for not more than 10$ monthly payment

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The MONITOR™  is a free web service that shows the latest posted picture and sensor data. With  2$ USB Camera  and Raspberry Pi, you can get your D.I.Y. Monitoring for an inexpensive cost. You can get started MONITOR™ for Free  here ! Even at the place where  no available network access all over the world, your Monitoring system still works well with  3G dongle  &  International Data SIM card . I write from now on how to set up an inexpensive 3G network environment on your RaspberryPi easily. USB 3G dongle and Data SIM card utilities " gc_modem " In General, a setting of USB 3G dongle and SIM Card is troublesome works with bizarre technical terms, like udev rule, apn, and so on. The " gc_modem " is useful utilities to change there troublesome works mentioned above to just select the name of dongle and SIM card which you'll use.  gc_modem is consist of the following parts: udev_rules : Definitions of each U...
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How to Measure ROOM CO2 concentration with 20$ sensor "MH-Z19" and Raspberry Pi

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MH-Z19 CO2 concentration Sensor This blog post is outdated. The updated version is here . MH-Z19 is a small, low-cost, weigh 15g CO2 sensor module product by  郑州炜盛电子科技 . You can buy it at an online shop like eBay or aliexpress about 20$. The electrical interface of this sensor is compatible with Raspberry Pi. So you can make your D.I.Y. CO2 Monitor with MH-Z19, Raspberry Pi, and MONITOR™. The normal CO2 concentration is about 400ppm. In a poorly ventilated room, the CO2 concentration will soon increase and make you feel drowsy. By ventilation, co2 concentration soon decrease and you can get your head refreshed. You can check your room air freshness by yourself and can protect your health with this. Cabling Connect RPi & mh-z19 as: - 5V on RPi and Vin on mh-z19 - GND(0v) on RPi and GND on mh-z19 - TxD and RxD are connected to cross between RPi and mh-z18  The following are an example of cabling, you can free to use other 5...
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