Quote:
Originally Posted by Jon Stratis
The DSC has "pull-up" resistors on all of the GPIOs. This means that, when nothing is connected to them, they will "act" as though they are connected to +5V.
This means you need to hook the pressure sensor up to the GND and SIG pins, such that when the switch closes it will pull the SIG down to 0V.
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When we tried that it didnt work but when we connected it to +5V and SIG it worked...