Hello there, would the TSL2561 (http://adafruit.com/products/439) and the DHT11 (http://adafruit.com/products/386) work with the Raspberry Pi + PiFace connected to a breadboard? I have a first small project where I want to sense temperature and light and control a heater, fan and lights according to those sensors measurements. Is this at all possible? It seems once you connect the PiFace, the GPIO is completely occupied so I cannot connect i2c devices with the PiFace connected to the Raspberry Pi. I've tested some python code within the PiFace emulator and I can get the LEDs and relays working. If I cannot connect the two sensors listed above, is there another way to utilize them on the same Raspberry Pi that has the PiFace connected?
