I have bought a PIR Sensor from Rapid
, and have managed to get it up and working using the GPIO pins on the board (Hurrah!).
The one thing I have now noticed is that in the documentation wiring diagram it says "lout Max 100 micro Amps":
I have it wired up to the Pi like this:
Now using my dodgy electronics knowledge, if I'm using a 150ohm resistor, and it's running at somwhere near 3.3v, does that mean that I'm pushing ~22 mA through the PIR sensor? It's working now, but I don't want it to quietly fry when I've been using it for a while..
Can anyone offer any advice?
The PIR Sensor documentation is here: http://www.rapidonline.com/pdf/61-1504.pdf
And I've a write up on my blog of what I've done here: http://www.sennir.co.uk/Journal/Raspber ... ent_sensor