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To create Arduino based device to compare data for as much many t/RH sensors as possible (without manual sensor switch), optionally with data logging for further analysis.
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Use of the same sensor on i2c usually limited by 1 or 2 (using ALT i2c address) of the same type. And SHT20, SHT21, SHT25, HTU21 is actually the same type, so to be able to compare measurement there is a need to use i2c multiplexer. In the case of 8 line multiplexer, there is a possibility to have 8-16 sensor of at the same time to be connected with Arduino.
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- Updated Power circuit
- i2c voltage converter board and new wiring
- SHTC1 and SHTC3 sensors added
- mux #1 address changed (to solve i2c address conflict)
- 2x BME680 removed (to solve i2c address conflict)
- 1x BME280 removed (to solve i2c address conflict)
- DHT12 sensors added instead of three BMEx80 (8a)
- ChipCap Sensor added instead of DHT12 (8b)
v9 - abandoned
- code optimization
- trend visualization
- hardware controls
- menu options (like format SD card)
- got some kind of home-made "calibration" tests with resolutions
- fan
- publish final electric scheme, sketch, results
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