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Wanted WiFi thermometer with data dump to server and sleep mode

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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 20717768
    Anonymous
    Level 1  
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  • #2 20717960
    TvWidget
    Level 38  
    WiFi communication is not very suitable for battery-powered devices. Even if connecting occasionally, the battery has to be large to ensure adequate current capacity. Running the radio interface in the ESP requires a current of the order of 100mA(_at_)3.3V. In comparison, thermometers with a BLE interface require several thousand times less energy to operate. They can therefore be powered by a small CR2032 battery for many months. Solutions consisting of battery-operated BLE thermometers and a gateway e.g. on ESP32 with mains power supply are often used.
  • #3 20718310
    Anonymous
    Level 1  
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  • #4 20718353
    TvWidget
    Level 38  
    If the signal is to pass through the walls of a building, it is advisable to use thermometers operating in the 868MHz range. With this solution, there may be formal limitations with too frequent sending of measurements.
    Do you need one thermometer or are you looking for a larger scale solution?
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  • #5 20718360
    Anonymous
    Level 1  
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  • #6 20718379
    TvWidget
    Level 38  
    How often are the temperature measurements to be taken ?
    What measurement range and accuracy is required ?
    Is WiFi available at those locations where the thermometers will be ?
    There are also thermometers with archiving. You can approach them and read out historical data with a smartphone. Is this solution acceptable ?
  • #7 20718387
    Anonymous
    Level 1  
  • #8 20718417
    hindoos
    Level 35  
    Ecowitt makes thermometers for the frequency of your choice as well as WiFi gateways that work with them so you can collect this data. It is not cheap but it is practically a ready-made solution and supports many thermometers
  • Helpful post
    #9 20718504
    TvWidget
    Level 38  
    As an estimate, it can be assumed that data can be sent to the server in 30 sec. This means that 1mAh will be consumed per upload. If I am counting correctly this will give a monthly consumption of around 1.5Ah. If you accept changing the battery once a month then go for WiFi thermometers. If not then energy efficient wireless thermometers and a WiFi gateway with mains power will be the solution.
  • #10 20718511
    Anonymous
    Level 1  
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Topic summary

A user seeks a WiFi thermometer that can connect to a local network, periodically send measurement data to a designated server, and enter sleep mode to conserve battery life, avoiding cloud dependency. Responses highlight the challenges of using WiFi for battery-powered devices due to high energy consumption, suggesting alternatives like Bluetooth Low Energy (BLE) thermometers paired with a mains-powered gateway. Recommendations include using thermometers operating in the 868MHz range for better indoor range and solutions from Ecowitt, which offers compatible thermometers and WiFi gateways. The user expresses interest in a system that can handle multiple thermometers for data collection and statistics, with a preference for automatic data transmission.
Summary generated by the language model.
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