Touchscreen Progress 5

I ran some tests on my screen with the LED's attached and it's looking pretty good so far. My one concern is background brightness and also having to press hard or use moist fingers to get a nice spot. I'm going to try adding some additional LED's to see if that helps and also look into getting an IR pass filter, but I'm wondering if using a 'compliant surface' (as Han says) might not be better. This could virtually eliminate background noise as the surface could block outside IR sources and could act as a screen for the video at the same time. I'll need to run some tests. I am currently eyeing up a fairly cheap projector screen on ebay that ends soon. Hopefully it will stay affordable.