I don't use piface, just raw GPIO pins. Afaik, they don't have internal pull-up/down resistors, but in the circuit displayed below I would think that the signal is stable in any state, and within the voltage limits of the Pi. Or am I missing something? Proximity-Sensor-2-direct.png Note: This is an ...

I suppose the amount of devices you can power with a single power supply is limited by its amp output? My Raspberry Pi is powered via 5V mini-usb... and that's currently the only power supply in there, so I'll have to dig up another adapter for the sensor. Furthermore, I've been wondering about your ...

Hello Paul, I'm trying to replicate your awesome setup, and have some questions about it: * When my sensor arrived (exactly the one you linked - from dx.com), the glue was still liquid and the electronic components and wires could be freely pulled out of the metal housing. And now, 4 weeks later ...