Hello,
Nice job.
How do your setup solve this : "that I have to wave my hand in front of the sensor whenever I'm talking to someone while standing in front of my door." ?
I understand that your light is on 20 seconds when switch on by the PIR sensor ?! So you must move to keep the light on, isn't it ? Or am i wrong ?
Have you got more pics of your installation now ? I am very intersted.
Regards.