This articles describes how you can use I2C (TWI) communication, Arduino and temperature sensors to measure 3 different temperatures. It can be very helpful when you want to measure the outside, ...

I did develop some professional temperature measurement equipment with 24 bit Analog Devices ADCs, ratiometric measurement and high precision PT1000 sensors and I was happy to get 0.1°C accuracy ...

I’ve tried the DHT11 sensor modules at both Vcc 3.3V and 5.0V, and at both voltages the humidity values are bad. dfrobot has introduced a V2 DHT11 sensor module that changes the 10K pull-up to 4.7K.