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DS18B20 vs BBMagic METEO


is a digital thermometer that communicates over a 1-Wire bus. It requires only one data/power line and ground line in minimal parasite power configuration.
Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus.


is a wireless, battery powered ultra low power temperature, humidity and light level sensor. It communicates over Bluetooth Low Energy encrypted radio link. Additionally transmitting data has digital signature for authentication.
Each BBMagic METEO has a 48-bit address, which allows multiple sensors to function with one data receiver.


DS18B20’s temperature accuracy:
DS18B20 temperature accuracy
Unfortunately there is no curve below 0*C and above +70*C but there is an information in datasheets table:

  • range from -10*C to +85*C – accuracy is +/- 0,5*C
  • range from -55*C to +125*C – accuracy is +/- 2*C


BBMagic METEO temperature accuracy:
BBMagic METEO temperature accuracy


Its difficult to say which sensor has absolutely higher temperature accuracy but:

  • in narrow range from 0*C to +70*C DS18B20 wire thermometer may achive better accuracy
  • in wide range from -40*C to +120*C BBMagic METEO Bluetooth Low Energy sensor may be more accurate

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