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.

RS Components has announced the availability of the latest Arduino board that comes with WiFi wireless networking capability and more processing power than previously available. This has been achieved ...