Multiple i2c sensor simultaneous reading

Code for https://wiki.liutyi.info/display/ARDUINO/Test+i2c+humidity+sensors

arduino-humidity-sensors-test.ino

Hardware page https://wiki.liutyi.info/display/ARDUINO/v9+Sensors+Board

Current version with support for

• SHT2x (SHT20, SHT21, SHT25)
• SHT3x (SHT30, SHT31, SHT35, SHT85)
• SHTCx (SHTC1, SHTC3)
• Si7021 (SHT2x compatible)
• HTU21d (SHT2x compatible)
• HDC10x0 (HDC1080)
• HDC20x0 (HDC2080)
• BMEx80 (BME280)
• AM2320
• AHT1x (AHT15, AHT20)
• CC2D33
• HIH7120

Sensors

https://wiki.liutyi.info/display/ARDUINO/Sensors

v10-AHT (Alternative sensors board)

Hardware page: https://wiki.liutyi.info/display/ARDUINO/v10.1-AHT+Sensor+board