Hello everyone! 
I am a digital artist and I am working on my prototype for a light box to show my paintings.
The light box will be made by only acrylic layers as the walls. Inside I am placing pretty much:
- microwave radar (RCWL)
- Arduino Uno
- 12V LED strip lights
- 5V-12V Battery
I need to solve:
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I need to reduce the area that the radar takes to read, I would like to have between 20cm to 30cm. How can I reduce that? I already tried a microwave horn and it didn't work. Maybe if I apply a resistor it will reduce in general what it reads, but not by much, right?
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I was using State Change Detection (Edge Detection), which works similar as by gestures. Which is what I am looking for if possible. I know I could get the APDS9960 or similar, but the problem of using the APDS9960 is that I will be forced to make a visor for my PIR, to detect the gesture. And it may not work since it will be interrupted by the light inside the box. Unless I put some sort of small tube (like a straw size maybe?) the problem there is that my light box is made of milky white acrylic sheets, which will create a shadow on the way.. unless I sacrifice some distance....
The optimal distance for that one to work was around 7cm up to 25cm (saw another guy trying it in another video). Any other idea to make the microwave radar works by coding?
If this is not possible, maybe just make it read what it detects, the problem here is that the code I used don't let me (and I don't know how to change it) change the time it takes between the read from one move to the other. Sometimes it takes 2secs sometimes almost a min, and sometimes reads fake movements!! ):
So, for the RCWL there is no way I can make like a small box made of some metal, with a small open area (the visor) to read only a specific angle/area?
- how can I adapt the RCWL 3V to work with the 12V battery and lights without fry it? lol
Thank you so much!!!
Hope someone can help me, I need to finish my prototype ASAP!!! 