Ok, I figured it out. First, the code (as that was the real problem). from time import sleep import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setup(25, GPIO.OUT) GPIO.setup(24, GPIO.IN) GPIO.output(25, True) sleep(3) while 1: input_value = GPIO.input(24) print(input_value) sleep(1) GPIO.cleanup()...

Thanks when I try to hook it up in serial I will bear that in mind! I do think I'm going to try a bit longer to get it to work in HWI over the GPIO, partially because, well, I want to figure out how to work with GPIO, but also because it just seems more suitable for what I'm using it for.

Thanks!

Also, am I wrong to think that just running a lead from the 0.0v pin on the Rpi would set it to 0v? This is a terrible time for my stupid multimeter to flake out. But they make no mention of pin 4 being driven at all so again, hooking it up to nothing should be the same as setting it to ground yeah?...

Hardware Interface Mode Selection The Hardware Interface Mode is selected when TXD/SNS is between 0 V and 1.8 V during power ON or when exiting SLEEP Mode. TXD/SNS is set to ground so, that should be setting it to HWI correct? I have not tried connecting in serial, they described it as more advance...

Ok, so this is my very first Rpi project, I'm trying to hook up a ePIR from sparkfun. Pins 1,3,4 and 8 are all GND. Pins 2,6 are 3.3v. Pin 5 is GPIO18. Pin 7 is GPIO17. http://www.sparkfun.com/datasheets/Sensors/Proximity/SEN-09587-PS0284.pdf I was trying to adapt this: http://ninjablocks.com/groups...